This document lists production updates to Google Distributed Cloud. We recommend that Google Distributed Cloud developers periodically check this list for any new announcements.
You can see the latest product updates for all of Google Cloud on the Google Cloud page, browse and filter all release notes in the Google Cloud console, or programmatically access release notes in BigQuery.
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August 08, 2024
Release 1.29.400-gke.86
Google Distributed Cloud for bare metal 1.29.400-gke.86 is now available for download. To upgrade, see Upgrade clusters. Google Distributed Cloud for bare metal 1.29.400-gke.86 runs on Kubernetes 1.29.
If you use a third-party storage vendor, check the Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of Google Distributed Cloud for bare metal.
- GA: Added support in version 1.29.400-gke.86 and higher for Red Hat Enterprise Linux (RHEL) version 9.2. For more information, see Select your operating system.
Fixes:
The following container image security vulnerabilities have been fixed in 1.29.400-gke.86:
Fixed the following vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Google Distributed Cloud for bare metal known issues in the Troubleshooting section.
August 01, 2024
Release 1.28.800-gke.111
Google Distributed Cloud for bare metal 1.28.800-gke.111 is now available for download. To upgrade, see Upgrade clusters. Google Distributed Cloud for bare metal 1.28.800-gke.111 runs on Kubernetes 1.28.
If you use a third-party storage vendor, check the Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of Google Distributed Cloud for bare metal.
Functionality changes:
- Updated Kubernetes audit logging to include request and response payloads from the Kubernetes API server for bare metal custom resources, including the following:
Cluster
,NodePool
,BareMetalMachine
andBareMetalCluster
.
Fixes:
The following container image security vulnerabilities have been fixed in 1.28.800-gke.111:
Medium-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Google Distributed Cloud for bare metal known issues in the Troubleshooting section.
July 25, 2024
Release 1.29.300-gke.185
Google Distributed Cloud for bare metal 1.29.300-gke.185 is now available for download. To upgrade, see Upgrade clusters. Google Distributed Cloud for bare metal 1.29.300-gke.185 runs on Kubernetes 1.29.
If you use a third-party storage vendor, check the Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of Google Distributed Cloud for bare metal.
Functionality changes:
Updated registry mirror support to allow you to specify a port for host addresses.
Updated Kubernetes audit logging to include request and response payloads from the Kubernetes API server for bare metal custom resources, such as
Cluster
,NodePool
,BareMetalMachine
, andBareMetalCluster
.
Fixes:
The following container image security vulnerabilities have been fixed in 1.29.300-gke.185:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Google Distributed Cloud for bare metal known issues in the Troubleshooting section.
Release 1.16.11
Google Distributed Cloud for bare metal 1.16.11 is now available for download. To upgrade, see Upgrade clusters. Google Distributed Cloud for bare metal 1.16.11 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of Google Distributed Cloud for bare metal.
Fixes:
The following container image security vulnerabilities have been fixed in 1.16.11:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Google Distributed Cloud for bare metal known issues in the Troubleshooting section.
July 09, 2024
Release 1.28.700-gke.150
Google Distributed Cloud for bare metal 1.28.700-gke.150 is now available for download. To upgrade, see Upgrade clusters. Google Distributed Cloud for bare metal 1.28.700-gke.150 runs on Kubernetes 1.28.
If you use a third-party storage vendor, check the Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of Google Distributed Cloud for bare metal.
Fixes:
- Fixed an issue where upgraded clusters didn't get label updates that match the labels applied for newly created clusters, for a given version.
The following container image security vulnerabilities have been fixed in 1.28.700-gke.150:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Google Distributed Cloud for bare metal known issues in the Troubleshooting section.
July 03, 2024
Security bulletin (all minor versions)
A remote code execution vulnerability, CVE-2024-6387, was recently discovered in OpenSSH. The vulnerability exploits a race condition that can be used to obtain access to a remote shell, enabling attackers to gain root access. At the time of publication, exploitation is believed to be difficult and take several hours per machine being attacked. We are not aware of any exploitation attempts. This vulnerability has a Critical severity.
For mitigation steps and more details, see the GCP-2024-040 security bulletin.
July 01, 2024
Release 1.16.10
Google Distributed Cloud for bare metal 1.16.10 is now available for download. To upgrade, see Upgrade clusters. Google Distributed Cloud for bare metal 1.16.10 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of Google Distributed Cloud for bare metal.
Fixes:
- Fixed an issue where upgraded clusters didn't get label updates that match the labels applied for newly created clusters, for a given version.
The following container image security vulnerabilities have been fixed in 1.16.10:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Google Distributed Cloud for bare metal known issues in the Troubleshooting section.
June 27, 2024
Release 1.29.200-gke.243
Google Distributed Cloud for bare metal 1.29.200-gke.243 is now available for download. To upgrade, see Upgrade clusters. Google Distributed Cloud for bare metal 1.29.200-gke.243 runs on Kubernetes 1.29.
If you use a third-party storage vendor, check the Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of Google Distributed Cloud for bare metal.
Functionality changes:
Updated registry mirror support to allow you to specify a port for host addresses.
Updated the networking preflight check to verify that either the
ip_tables
or thenf_tables
kernel module is available for loading, instead of being explicitly loaded.Added support for Red Hat Enterprise Linux 8.10 for Google Distributed Cloud software version 1.29.200-gke.243 and higher.
Fixes:
Fixed an issue where upgraded clusters didn't get label updates that match the labels applied for newly created clusters, for a given version.
Fixed an issue where service accounts created by using the
--create-service-accounts
flag with thebmctl create config
command don't have enough permissions.
The following container image security vulnerabilities have been fixed in 1.29.200-gke.243
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Google Distributed Cloud for bare metal known issues in the Troubleshooting section.
June 06, 2024
Release 1.28.600-gke.163
Google Distributed Cloud for bare metal 1.28.600-gke.163 is now available for download. To upgrade, see Upgrade clusters. Google Distributed Cloud for bare metal 1.28.600-gke.163 runs on Kubernetes 1.28.
If you use a third-party storage vendor, check the Ready storage partners page to make sure the storage vendor has already passed the qualification for this release of Google Distributed Cloud for bare metal.
Functionality changes:
Updated preflight checks add a check for networking kernel modules (
ip_tables
ornp_tables
) and remove theiptables
package check.Added checks to validate the SSH client certificate file type before saving the certificate as a Secret.
Added support for Red Hat Enterprise Linux 8.10 for Google Distributed Cloud software version 1.28.600-gke.163 and higher.
Fixed an issue where the kubelet doesn't honor shortened, 1-second grace period for pod deletion during eviction-based draining.
The following container image security vulnerabilities have been fixed in 1.28.600-gke.163:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Google Distributed Cloud for bare metal known issues in the Troubleshooting section.
May 28, 2024
Release 1.16.9
Google Distributed Cloud for bare metal 1.16.9 is now available for download. To upgrade, see Upgrade clusters. Google Distributed Cloud for bare metal 1.16.9 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of Google Distributed Cloud software.
Fixes:
The following container image security vulnerabilities have been fixed in 1.16.9:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Google Distributed Cloud for bare metal known issues in the Troubleshooting section.
Security bulletin (all minor versions)
A new vulnerability (CVE-2024-4323) has been discovered in Fluent Bit that could result in remote code execution. Fluent Bit versions 2.0.7 through 3.0.3 are affected.
Google Distributed Cloud software doesn't use a vulnerable version of Fluent Bit and is unaffected.
For more information, see the GCP-2024-031 security bulletin.
May 15, 2024
Release 1.29.100-gke.251
GKE on Bare Metal 1.29.100-gke.251 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.29.100-gke.251 runs on Kubernetes 1.29.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Added new API and IAM role requirements for Cloud Monitoring:
You must enable the
kubernetesmetadata.googleapis.com
API for your project and grant theroles/kubernetesmetadata.publisher
IAM role to the Logging and Monitoring service account (anthos-baremetal-cloud-ops
, when created automatically). Clusters use this API as an endpoint to send Kubernetes metadata to Google Cloud. The metadata is vital for cluster monitoring, debugging, and recovery. If you install your clusters behind a proxy, addkubernetesmetadata.googleapis.com
to the list of allowed connections.Due to changes in the way service accounts are checked, you must also grant the following IAM roles to the Logging and Monitoring service account:
roles/monitoring.viewer
roles/serviceusage.serviceUsageViewer
These API and IAM role requirements apply to both creating new 1.29 clusters and upgrading existing clusters to 1.29.
Functionality changes:
Added checks to validate the SSH client certificate file type before saving the certificate as a Secret.
Deprecated the
spec.gkeVersion
field inMachine
andBareMetalMachine
custom resources. After GKE on Bare Metal release 1.30, the value ofgkeVersion
isn't guaranteed to be reliable.Added preflight checks for available disk space in specific directories:
During cluster creation, the following directories are checked:
/
(the root directory) has at least 4 GiB of free space/var/log/fluent-bit-buffers
has at least 12 GiB of free space/var/opt/buffered-metrics
has at least 10016 MiB of free space
During a cluster upgrade, the following directory is checked:
/
(the root directory) has at least 2 GiB of free space
Fixes:
- Fixed an issue where the kubelet doesn't honor shortened, 1-second grace period for pod deletion during eviction-based draining.
The following container image security vulnerabilities have been fixed in 1.29.100-gke.251:
Medium-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
May 02, 2024
Release 1.28.500-gke.120
GKE on Bare Metal 1.28.500-gke.120 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.28.500-gke.120 runs on Kubernetes 1.28.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
The following container image security vulnerabilities have been fixed in 1.28.500-gke.120:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
April 29, 2024
Release 1.29.0-gke.1449
GKE on Bare Metal 1.29.0-gke.1449 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.29.0-gke.1449 runs on Kubernetes 1.29.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Version 1.15 end of life: In accordance with the Version Support Policy, version 1.15 (all patch releases) of GKE on Bare Metal has reached its end of life and is no longer supported.
Added new API and IAM role requirements for Cloud Monitoring:
You must enable the
kubernetesmetadata.googleapis.com
API for your project and grant theroles/kubernetesmetadata.publisher
IAM role to the Logging and Monitoring service account (anthos-baremetal-cloud-ops
, when created automatically). Clusters use this API as an endpoint to send Kubernetes metadata to Google Cloud. The metadata is vital for cluster monitoring, debugging, and recovery. If you install your clusters behind a proxy, addkubernetesmetadata.googleapis.com
to the list of allowed connections.Due to changes in the way service accounts are checked, you must also grant the following IAM roles to the Logging and Monitoring service account:
roles/monitoring.viewer
roles/serviceusage.serviceUsageViewer
These API and IAM role requirements apply to both creating new 1.29 clusters and upgrading existing clusters to 1.29.
GA: Support GKE Identity Service v2 capability for an improved security flow when you authenticate with third-party identity solutions.
The GA offering of GKE Identity Service v2 has the following requirements and restrictions:
GKE Identity Service v2 now requires ports
11001
and11002
on the control plane load balancer nodes, instead of8443
and8444
. Ensure these ports are open and available before you upgrade a cluster to version 1.29.0-gke.1449 and higher. If the ports aren't open, upgrade preflight checks fail.GKE Identity Service v2 requires version 1.5.1 or higher of the Anthos Auth gcloud CLI component. If necessary, update the Anthos Auth component (
gcloud components update anthos-auth
). If you use the Google Cloud SDK, updating the SDK (gcloud components update
) to version 474.0.0 or later also updates the Anthos Auth component to the required version.GKE Identity Service v2 doesn't work with GKE on Bare Metal clusters with the following configurations:
Clusters with a single control plane node only.
Clusters that use control plane nodes for load balancing. That is, clusters that aren't configured with either a separate load balancing node pool or manual load balancing.
GA: Added support for skews of up to two minor versions for selective node pool upgrades.
GA: Added capability to pause and resume cluster upgrades.
GA: Maintenance mode now uses eviction-based draining for nodes, instead of taint-based draining. Eviction-based draining uses the Eviction API, which honors Pod Disruption Budgets (PDBs). Draining nodes this way provides better protection against workload disruptions.
Preview: Added support for node-level private registry configuration for workload images.
Preview: Added support for rolling back select node pool upgrades.
Preview: Added support for admin and hybrid clusters to manage multiple versions user clusters concurrently.
Preview: Added support for using an intermediate Certificate Authority (CA) as the cluster root CA.
Preview: Added support to route workload logs to a third-party custom Kafka destination. This capability isn't enabled by default. You enable this capability in the cluster
stackdriver
resource spec by adding theunmanagedKafkaOutputConfig
section. This section lets you specify the IP addresses of Kafka message brokers (brokers
), topic names (topics
), and keys to map the topics to partitions (topicKeys
).Improved command-line interface errors and error documentation.
Functionality changes:
GKE Identity Service v2 now sends extra parameters (
extraParams
) to your OIDC provider.Extra node viewing permissions are added for accounts specified with the
spec.clusterSecurity.authorization.clusterViewer.gcpAccounts
field in the Cluster resource.Added
Status.Available
field toBareMetalMachine
resources to indicate whether the machine is available.Updated preflight checks add a check for networking kernel modules (
ip_tables
ornp_tables
) and remove theiptables
package check.The Google plugin for the GKE Identity Service now caches the public keys based on
max-age
incache-control
header.
Fixes:
Fixed an issue where the kubelet doesn't honor shortened, 1-second grace period for pod deletion during eviction-based draining.
Fixed a cluster upgrade issue where the
lifecycle-controller-deployer
Pod was unable to migrate existing GKE on Bare Metal resources to the latest API version. This issue blocked upgrades to earlier version 1.28 releases.Fixed an issue with configuring a proxy for your cluster that required you to manually set
HTTPS_PROXY
andNO_PROXY
environment variables on the admin workstation.Fixed an issue where upgrades are blocked because
cluster-operator
can't delete stale, failing preflight check resources.Fixed an issue where the network check ConfigMap wasn't updated when nodes were added or removed.
The following container image security vulnerabilities have been fixed in version 1.29.0-gke.1449:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
- Clusters that use bundled load balancing with BGP might have performance degradation as the total number of Services of type
LoadBalancer
approaches 2,000.
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
April 25, 2024
Release 1.16.8
GKE on Bare Metal 1.16.8 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.16.8 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Fixes:
The following container image security vulnerabilities have been fixed in 1.16.8:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
April 08, 2024
Release 1.28.400-gke.77
GKE on Bare Metal 1.28.400-gke.77 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.28.400-gke.77 runs on Kubernetes 1.28.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Functionality changes:
- Updated preflight checks to add a check for networking kernel modules.
- Updated preflight checks to remove the check for
iptables
package availability.
Fixes:
- Fixed a cluster upgrade issue where the
lifecycle-controller-deployer
Pod was unable to migrate existing GKE on Bare Metal resources to the latest API version. This issue blocked upgrades to earlier version 1.28 releases.
Fixes:
The following container image security vulnerabilities have been fixed in 1.28.400-gke.77:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
Release 1.16.7
GKE on Bare Metal 1.16.7 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.16.7 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Fixes:
- Fixed an issue with configuring a proxy for your cluster that required you to manually set
HTTPS_PROXY
andNO_PROXY
environment variables on the admin workstation.
The following container image security vulnerabilities have been fixed in 1.16.7:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
April 03, 2024
A Denial-of-Service (DoS) vulnerability (CVE-2023-45288) was recently discovered in multiple implementations of the HTTP/2 protocol, including the golang HTTP server used by Kubernetes. The vulnerability could lead to a DoS of the Google Kubernetes Engine (GKE) control plane. For more information, see the GCP-2024-022 security bulletin.
March 21, 2024
Release 1.28.300-gke.131
GKE on Bare Metal 1.28.300-gke.131 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.28.300-gke.131 runs on Kubernetes 1.28.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Functionality changes:
Updated preflight checks to add a check for networking kernel modules.
Updated preflight checks to remove the check for
iptables
package availability.Increased the default memory limit for
node-exporter
.
Fixes:
- Fixed an issue with configuring a proxy for your cluster that required you to manually set
HTTPS_PROXY
andNO_PROXY
environment variables on the admin workstation.
The following container image security vulnerabilities have been fixed in 1.28.300-gke.131:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
Release 1.15.11
GKE on Bare Metal 1.15.11 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.15.11 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
The following container image security vulnerabilities have been fixed in 1.15.11:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
March 04, 2024
Release 1.28.200-gke.118
GKE on Bare Metal 1.28.200-gke.118 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.28.200-gke.118 runs on Kubernetes 1.28.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Fixes:
- Fixed an issue where upgrades are blocked because
cluster-operator
can't delete stale, failing preflight check resources.
Fixes:
The following container image security vulnerabilities have been fixed in 1.28.200-gke.118:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
Release 1.15.10
GKE on Bare Metal 1.15.10 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.15.10 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
GKE on Bare Metal version 1.15.10 and later has been qualified on and supports Red Hat Enterprise Linux (RHEL) version 8.9.
Fixes:
The following container image security vulnerabilities have been fixed in 1.15.10:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
February 20, 2024
Release 1.16.6
GKE on Bare Metal 1.16.6 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.16.6 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Fixes:
Fixed an issue where upgrades are blocked because
cluster-operator
can't delete stale, failing preflight check resources.Cleaned up stale
etcd-events
membership to enhance control plane initialization reliability in the event of a node join failure.
Fixes:
The following container image security vulnerabilities have been fixed in 1.16.6:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
February 01, 2024
Release 1.15.9
GKE on Bare Metal 1.15.9 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.15.9 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Fixes:
The following container image security vulnerabilities have been fixed in 1.15.9:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
January 31, 2024
Release 1.28.100-gke.146
GKE on Bare Metal 1.28.100-gke.146 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.28.100-gke.146 runs on Kubernetes 1.28.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Fixes:
Fixed a rootless permission issue on file /var/lib/audit.log
in 1.28.100, which might block control plane node upgrades.
The following container image security vulnerabilities have been fixed in 1.28.100-gke.146:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
Security bulletin (all minor versions)
A security vulnerability, CVE-2024-21626, has been discovered in runc
where a user with permission to create Pods might be able to gain full access to the node filesystem.
For instructions and more details, see the GCP-2024-005 security bulletin.
January 30, 2024
Release 1.16.5
GKE on Bare Metal 1.16.5 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.16.5 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Fixes:
The following container image security vulnerabilities have been fixed in 1.16.5:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
December 15, 2023
Release 1.28.0-gke.435
GKE on Bare Metal 1.28.0-gke.435 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.28.0-gke.435 runs on Kubernetes 1.28.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Version alignment
For easier identification of the Kubernetes version for a given release, we are aligning Anthos clusters on bare metal version numbering with GKE version numbering. This change starts with this minor release, which is version 1.28. The version alignment is for major and minor versions only, patch versions are product specific. In addition to this version alignment, the Anthos clusters on bare metal release versions will follow the GKE semantic versioning scheme (x.y.z-gke.N), including the addition of a GKE patch version (-gke.N). Unlike GKE, however, the patch version (z) increments by 100.
Example version numbers for Anthos clusters on bare metal:
- Minor release: 1.28.0-gke.435
- Initial patch release: 1.28.100-gke.27
- Second patch release: 1.28.200-gke.19
This change affects numbering only. Upgrades from 1.16 to 1.28 follow the same process as upgrades between prior minor releases. However, downloads, upgrades, and cluster creation for 1.28 and higher versions require the fully qualified version number, including the GKE patch version.
Version 1.14 end of life: In accordance with the Anthos Version Support Policy, version 1.14 (all patch releases) of Anthos clusters on bare metal has reached its end of life and is no longer supported.
Preview: Added support for Red Hat Enterprise Linux (RHEL) version 9.2. For more information, see Select your operating system.
Preview: Added support for skews of up to two minor versions for selective node pool upgrades.
Preview: Added capability to pause and resume cluster upgrades.
GA: Added support for using custom cluster certificate authorities (CAs) to enable secure authentication and encryption between cluster components.
GA: Added support for using
gkeConnect.location
to specify regional membership for fleets.GA: Added support for using
controlPlane.apiServerCertExtraSANs
to specify extra subject alternative name (SAN) entries for the Kubernetes API server certificate.GA: Added support for enabling Direct Server Return (DSR) load balancing for clusters. In GA, DSR load balancing is enabled with the
clusterNetwork.forwardMode
field in the cluster configuration file.GA: Added support for multiple BGP load balancer (
BGPLoadBalancer
) resources and BGP Community. Multiple BGP load balancer resources provide more flexibility to define which peers advertise specific load balancer nodes and Services. BGP Community support helps you to distinguish routes coming from BGP load balancers from other routes in your network.Preview: Added GKE Identity Service v2 capability for an improved security flow when you authenticate with third-party identity solutions.
Functionality changes:
Configured the local volume provisioner DaemonSet to tolerate all taints.
Updated the SRIOV operator.
To improve logging system integration, updated audit logging to always write a local Kubernetes audit log file, even when Cloud Audit Logging is enabled.
Changed upgrade preflight checks behavior to skip kubeadm job creation check to improve upgrade reliability.
Updated Dataplane V2 to use Cilium v1.13.
Added preflight check for control planes running RHEL 9.2 or Ubuntu 22.04 to check the
fs.inotify
kernel settings.Removed hardcoded timeout value for
bmctl backup
operation.Updated certificate management to propagate
private-registry-certs
Secret changes to all machines.Added support for SSH client certificates in
bmctl backup
andbmctl restore
commands.Added the optional
userClaim
field to the ClientConfig custom resource definition bundled with Anthos clusters on bare metal. This change improves support for Azure AD integrations with Anthos Identity Service.Updated constraint on NodePool
spec.upgradeStrategy.concurrentNodes
to be the smaller of either 15 nodes or 50% of the size of the node pool.
Supported node pool versions:
If you use selective worker node pool upgrades to upgrade a cluster to version 1.28.0-gke.435, see Node pool versioning rules for a list of the versions that are supported for the worker node pools.
Fixes:
Fixed an issue where the
node-problem-detector
systemd
service doesn't restart after the node reboots.Fixed an issue where
CoreDNS
Pods can get stuck in an unready state.Fixed an issue that caused application metrics to be unavailable in Anthos clusters on bare metal versions 1.16.0 and 1.16.1.
Fixed a memory leak in Dataplane V2.
Fixed an issue that caused file and directory permissions to be set incorrectly after backing up and restoring a cluster.
Added direct dependencies on systemd, containerd, and kubelet over their mount point folders in
/var/lib/
.Fixed an issue that blocked upgrades to version 1.16 for clusters that have secure computing mode (
seccomp
) disabled.Fixed an issue where etcd blocked upgrades due to an incorrect initial-cluster-state.
Fixed an issue that sometimes resulted in the upgrade process starting before either all pods have been drained or the draining period has elapsed.
Fixed an issue that resulted in the etcd-events memory request (
resources.requests.memory
) being set incorrectly.
The following container image security vulnerabilities have been fixed in version 1.28.0-gke-435:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
Release 1.16.4
GKE on Bare Metal 1.16.4 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.16.4 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Functionality changes:
- Changed upgrade preflight checks behavior to skip kubeadm job creation check to improve upgrade reliability.
Supported node pool versions:
If you use selective worker node pool upgrades to upgrade a cluster to version 1.16.4, see Node pool versioning rules for a list of the versions that are supported for the worker node pools.
Fixes:
Fixed an issue where the network check ConfigMap wasn't being updated when nodes were added or removed.
Fixed an issue where excessive
stackdriver-operator
reconciliations resulted in high CPU usage.
Fixes:
The following container image security vulnerabilities have been fixed in 1.16.4:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal issues in the Troubleshooting section.
December 13, 2023
Release 1.15.8
GKE on Bare Metal 1.15.8 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.15.8 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Functionality changes:
- Changed upgrade preflight checks behavior to skip kubeadm job creation check to improve upgrade reliability.
Fixes:
- Fixed an issue where the network check ConfigMap wasn't being updated when nodes were added or removed.
Fixes:
The following container image security vulnerabilities have been fixed in 1.15.8:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
November 28, 2023
Release 1.16.3
GKE on Bare Metal 1.16.3 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.16.3 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Functionality changes:
- Increased the certificate time to live (TTL) for
metrics-providers-ca
andstackdriver-prometheus-scrape
for third-party monitoring.
Supported node pool versions:
If you use selective worker node pool upgrades to upgrade a cluster to version 1.16.4, see Node pool versioning rules for a list of the versions that are supported for the worker node pools.
Fixes:
Fixed an issue where
CoreDNS
Pods can get stuck in an unready state.Fixed an issue that caused application metrics to be unavailable in Anthos clusters on bare metal versions 1.16.0 and 1.16.1.
Fixes:
The following container image security vulnerabilities have been fixed in 1.16.3:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
November 21, 2023
Release 1.14.11
Anthos clusters on bare metal 1.14.11 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.11 runs on Kubernetes 1.25.
Fixes:
The following container image security vulnerabilities have been fixed in 1.14.11:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
November 20, 2023
Release 1.15.7
Anthos clusters on bare metal 1.15.7 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.15.7 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Fixed an issue where CoreDNS Pods can get stuck in an unready state.
The following container image security vulnerabilities have been fixed in 1.15.7:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
November 06, 2023
Release 1.14.10
Anthos clusters on bare metal 1.14.10 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.10 runs on Kubernetes 1.25.
Functionality changes:
Added
NODEPOOL-NAME
,NODEPOOL-NAMESPACE
, andSTATUS
columns for theInventoryMachine
resource to improve troubleshooting.Removed hardcoded timeout value for the
bmctl backup
operation.
Fixes:
Fixed an issue where
CoreDNS
Pods can get stuck in an unready state.Fixed a memory leak in Dataplane V2.
Fixes:
The following container image security vulnerabilities have been fixed in version 1.14.10:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
October 30, 2023
Release 1.16.2
Anthos clusters on bare metal 1.16.2 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.16.2 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Functionality changes:
Increased the certificate time to live (TTL) for
metrics-providers-ca
andstackdriver-prometheus-scrape
for third-party monitoring.Removed hardcoded timeout value for the
bmctl backup
operation.
Supported node pool versions:
If you use selective worker node pool upgrades to upgrade a cluster to version 1.16.4, see Node pool versioning rules for a list of the versions that are supported for the worker node pools.
Fixes:
Fixed the
spec.featureGates.annotationBasedApplicationMetrics
feature gate in the stackdriver custom resource to enable collection of annotation-based workload metrics. This function is broken in Anthos clusters on bare metal versions 1.16.0 and 1.16.1.Fixed a memory leak in Dataplane V2.
Fixed an issue where garbage collection deleted Source Network Address Translation (SNAT) entries for long-lived egress NAT connections, causing connection resets.
Fixed an issue that caused file and directory permissions to be set incorrectly after backing up and restoring a cluster.
Added direct dependencies on systemd, containerd, and kubelet over their mount point folders in
/var/lib/
.Fixed an issue where etcd blocked upgrades due to an incorrect initial-cluster-state.
Fixed an issue that blocked upgrades to version 1.16 for clusters that have secure computing mode (
seccomp
) disabled.
The following container image security vulnerabilities have been fixed in release 1.16.2:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
Release 1.15.6
GKE on Bare Metal 1.15.6 is now available for download. To upgrade, see Upgrade clusters. GKE on Bare Metal 1.15.6 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Functionality changes:
- Removed hardcoded timeout value for the
bmctl backup
operation.
Fixes:
Fixed a memory leak in Dataplane V2.
Added direct dependencies on systemd, containerd, and kubelet over their mount point folders in
/var/lib/
.
Fixes:
Fixed the following vulnerabilities:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see GKE on Bare Metal known issues in the Troubleshooting section.
September 29, 2023
Release 1.14.9
Anthos clusters on bare metal 1.14.9 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.9 runs on Kubernetes 1.25.
Fixes:
Fixed an issue to prevent cluster upgrades from starting on a node before either all Pods have been drained or the Pod draining timeout has been reached.
Fixes:
The following container image security vulnerabilities have been fixed in version 1.14.9:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
September 25, 2023
Release 1.15.5
Anthos clusters on bare metal 1.15.5 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.15.5 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Fixed an issue to prevent cluster upgrades from starting on a node before either all Pods have been drained or the Pod draining timeout has been reached.
The following container image security vulnerabilities have been fixed in 1.15.5:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
September 21, 2023
Release 1.16.1
Anthos clusters on bare metal 1.16.1 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.16 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Supported node pool versions:
If you use selective worker node pool upgrades to upgrade a cluster to version 1.16.4, see Node pool versioning rules for a list of the versions that are supported for the worker node pools.
Functionality changes:
Added the optional
userClaim
field to the ClientConfig custom resource definition bundled with Anthos clusters on bare metal. This change improves support for Azure AD integrations with Anthos Identity Service.Updated constraint on NodePool
spec.upgradeStrategy.concurrentNodes
to be the smaller of either 15 nodes or 50% of the size of the node pool.
Fixes:
Fixed an issue where etcd blocked upgrades due to an incorrect initial-cluster-state.
Fixed an issue that blocked upgrades to version 1.16 for clusters that have secure computing mode (
seccomp
) disabled.Fixed an issue to prevent cluster upgrades from starting on a node before either all Pods have been drained or the Pod draining timeout has been reached.
Fixed an issue where the memory resource requests value wasn't set properly for
etcd-events
.
Fixes:
The following container image security vulnerabilities have been fixed in 1.16.1:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
August 25, 2023
Release 1.16.0
Anthos clusters on bare metal 1.16.0 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.16.0 runs on Kubernetes 1.27.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Version 1.13 end of life: In accordance with the Anthos Version Support Policy, version 1.13 (all patch releases) of Anthos clusters on bare metal has reached its end of life and is no longer supported.
Red Hat Enterprise Linux (RHEL) 8 minor versions 8.2, 8.3, 8.4, and 8.5 have reached their end of life. Please ensure you're using a supported version of your operating system.
Cluster lifecycle:
Upgraded to Kubernetes version 1.27.4.
Added support for Red Hat Enterprise Linux (RHEL) version 8.8.
GA: Added support for parallel upgrades of worker node pools.
GA: Added support to upgrade specific worker node pools separately from the rest of the cluster.
GA: Added a separate instance of etcd for the
etcd-events
object. This new etcd instance is always on and requires ports 2382 and 2383 to be open on control plane nodes for inbound TCP traffic. If these ports aren't opened, cluster creation and cluster upgrades are blocked.GA: Updated preflight checks for cluster installation and upgrades to use changes from the latest Anthos clusters on bare metal patch version to address known issues and provide more useful checks.
GA: Support enrolling admin and user clusters in the Anthos On-Prem API automatically to enable cluster lifecycle management from the Google Cloud CLI, the Google Cloud console, and Terraform when the Anthos On-Prem API is enabled. If needed, you have the option to disable enrollment. For more information, see the description for the
gkeOnPremAPI
field in the cluster configuration file.GA: Added ability to configure kubelet image pull settings for node pools. For more information, see Configure kubelet image pull settings.
Added new health check to detect any unsupported drift in the custom resources managed by Anthos clusters on bare metal. Unsupported resource changes can lead to cluster problems.
Added a new flag,
--target-cluster-name
, that is supported by thebmctl register bootstrap
command.
Networking:
GA: Added support for Services of type LoadBalancer to use
externalTrafficPolicy=Local
with bundled load balancing with BGP.Preview: Added support for enabling Direct Server Return (DSR) load balancing for clusters configured with flat-mode networking. DSR load balancing is enabled with an annotation,
preview.baremetal.cluster.gke.io/dpv2-lbmode-dsr: enable
.Preview: Upgraded wherabouts to v0.6.1-gke.1 to support dual-stack networking.
Added support for multiple BGP load balancer (
BGPLoadBalancer
) resources and BGP Community. Multiple BGP load balancer resources provide more flexibility to define which peers advertise specific load balancer nodes and Services. BGP Community support helps you to distinguish routes coming from BGP load balancers from other routes in your network.
Observability:
- GA: Added support for system metrics when you use Google Cloud Managed Service for Prometheus.
Security and Identity:
GA: Added support for Binary Authorization, a service on Google Cloud that provides software supply-chain security for container-based applications. For more information, see Set up Binary Authorization policy enforcement.
GA: Added support for VPC Service Controls, which provides additional security for your clusters to help mitigate the risk of data exfiltration.
Preview: Added support for using custom cluster certificate authorities (CAs) to enable secure authentication and encryption between cluster components.
Preview: Added support for configuring the Subject Alternative Names (SANs) of the kubeadm generated certificate for the kube-apiserver.
Added support to run keepalived as a non-root user.
Supported node pool versions:
If you use selective worker node pool upgrades to upgrade a cluster to version 1.16.4, see Node pool versioning rules for a list of the versions that are supported for the worker node pools.
Functionality changes:
Updated constraint on NodePool
spec.upgradeStrategy.concurrentNodes
to be the smaller of 15 nodes or 50% of the size of the node pool.Replaced legacy method of enabling application logging in the cluster configuration file with two fields,
enableCloudLoggingForApplications
andenableGMPForApplications
, in the stackdriver custom resource.The
spec.clusterOperations.enableApplication
field in the cluster configuration file has no effect on version 1.16.0 and higher clusters. This field populated theenableStackdriverForApplications
field in the stackdriver custom resource, which enabled annotation based workload metric collection. If you need this capability, use theannotationBasedApplicationMetrics
feature gate in the stackdriver custom resource as shown in the following sample to keep the same behavior:kind:stackdriver spec: enableCloudLoggingForApplications: true featureGates: annotationBasedApplicationMetrics: true
Added optional
ksmNodePodMetricsOnly
feature gate in the stackdriver custom resource to reduce the number of metrics from kube-state-metrics. Reducing the number of metrics makes monitoring pipeline more stable in large scale clusters.Audit logs are compressed on the wire for Cloud Audit Logs consumption, reducing egress bandwidth by approximately 60%.
Upgraded local volume provisioner to v2.5.0.
Upgraded snapshot controller to v5.0.1.
Deprecated v1beta1 volume snapshot custom resources. Anthos clusters on bare metal will stop serving v1beta1 resources in a future release.
Removed resource request limits on edge profile workloads.
Added preflight check to make sure control plane and load balancer nodes aren't under maintenance before an upgrade.
Updated the cluster snapshot capability so that information can be captured for the target cluster even when the cluster custom resource is missing or unavailable.
Improved
bmctl
error reporting for failures during the creation of a bootstrap cluster.Added support for using the
baremetal.cluster.gke.io/maintenance-mode-deadline-seconds
cluster annotation to specify the maximum node draining duration, in seconds. By default, a 20-minute (1200 seconds) timeout is enforced. When the timeout elapses, all pods are stopped and the node is put into maintenance mode. For example to change the timeout to 10 minutes, add the annotationbaremetal.cluster.gke.io/maintenance-mode-deadline-seconds: "600"
to your cluster.Updated
bmctl check cluster
to create a HealthCheck custom resource in the admin cluster if it's healthy.
Fixes:
Fixed an issue where the apiserver could become unresponsive during a cluster upgrade for clusters with a single control plane node.
Fixed an issue where cluster installations or upgrades fail when the cluster name has more than 45 characters.
Fixed an issue where the control plane VIP wasn't reachable during cluster installation on Red Hat Enterprise Linux.
Fixed an issue where audit logs were duplicated into the offline buffer even when they are sent to Cloud Audit Logs successfully.
Fixed an issue where node-specific labels set on the node pool were sometimes overwritten.
Updated
avoidBuggyIPs
andmanualAssign
fields in load balancer address pools (spec.loadBalancers.addressPools
) to allow changes at any time.Fixed an issue where containerd didn't restart when there was a version mismatch. This issue caused an inconsistent containerd version within the cluster.
Fixed an issue that caused the logging agent to use continuously increasing amounts of memory.
Fixed preflight check so that it no longer ignores the
no_proxy
setting.Fixed Anthos Identity Service annotation needed for exporting metrics.
Fixed an issue that caused the
bmctl restore
command to stop responding for clusters with manually configured load balancers.Fixed an issue that prevented Anthos clusters on bare metal from restoring a high-availability quorum for nodes that use
/var/lib/etcd
as a mountpoint.Fixed an issue that caused health checks to report failure when they find a Pod with a status of
TaintToleration
even when the replicaset for the Pod has sufficient Pods running.Fixed an issue that caused conflicts with third-party Ansible automation.
Fixed a cluster upgrade issue that prevented some control plane nodes from rejoining a cluster configured for high availability.
The following container image security vulnerabilities have been fixed:
Critical container vulnerabilities:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
August 22, 2023
Release 1.14.8
Anthos clusters on bare metal 1.14.8 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.8 runs on Kubernetes 1.25.
Fixes:
The following container image security vulnerabilities have been fixed:
High-severity container vulnerabilities:
Medium-severity container vulnerabilities:
Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
August 16, 2023
Release 1.15.4
Anthos clusters on bare metal 1.15.4 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.15.4 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Functionality changes:
Audit logs are compressed on the wire for Cloud Audit Logs consumption, reducing egress bandwidth by approximately 60%.
Upgraded local volume provisioner to v2.5.0.
Upgraded snapshot controller to v5.0.1.
Deprecated v1beta1 volume snapshot custom resources. Anthos clusters on bare metal will stop serving v1beta1 resources in a future release.
Fixes:
- Fixed an issue for clusters configured with manual load balancing where CA rotation reported that there were no (
0
) control plane nodes.
Fixes:
The following container image security vulnerabilities have been fixed:
- High-severity container vulnerabilities:
- Medium-severity container vulnerabilities:
- Low-severity container vulnerabilities:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
August 01, 2023
Release 1.13.10
Anthos clusters on bare metal 1.13.0 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.13.10 runs on Kubernetes 1.24.
Functionality changes:
Upgraded local volume provisioner to v2.5.0.
Upgraded snapshot controller to v5.0.1.
Deprecated v1beta1 volume snapshot custom resources. Anthos clusters on bare metal will stop serving v1beta1 resources in a future release.
Fixes:
Fixed an issue where the apiserver could become unresponsive during a cluster upgrade for clusters with a single control plane node.
Fixed an issue where audit logs were duplicated into the offline buffer even when they are sent to Cloud Audit Logs successfully.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
July 25, 2023
FEATURE
Release 1.14.7
Anthos clusters on bare metal 1.14.7 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.7 runs on Kubernetes 1.25.
Functionality changes:
Audit logs are compressed on the wire for Cloud Audit Logs consumption, reducing egress bandwidth by approximately 60%.
Upgraded local volume provisioner to v2.5.0.
Upgraded snapshot controller to v5.0.1.
Deprecated v1beta1 volume snapshot custom resources. Anthos clusters on bare metal will stop serving v1beta1 resources in a future release.
Fixes:
Fixed an issue where the smart default didn't work for
gke-metrics-agent
.Fixed an issue where the apiserver could become responsive during a cluster upgrade for clusters with a single control plane node.
Fixed an issue where audit logs were duplicated into the offline buffer even when they are sent to Cloud Audit Logs successfully.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
July 20, 2023
Release 1.15.3
Anthos clusters on bare metal 1.15.3 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.15.3 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Anthos clusters on bare metal 1.15.3 supports adding the
gkeOnPremAPI
section to your admin and user cluster configuration files to
enroll the clusters in the Anthos On-Prem API. Enrolling the clusters in the Anthos On-Prem API lets you
upgrade admin and user clusters using the Google Cloud console or the Google Cloud CLI.
Fixes:
Fixed an issue where the apiserver could become responsive during a cluster upgrade for clusters with a single control plane node.
Fixed an issue where cluster installations or upgrades fail when the cluster name has more than 45 characters.
Fixed an issue where node-specific labels set on the node pool were sometimes overwritten.
Fixed an issue where audit logs were duplicated into the offline buffer even when they are sent to Cloud Audit Logs successfully.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
June 29, 2023
Release 1.13.9
Anthos clusters on bare metal 1.13.9 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.13.9 runs on Kubernetes 1.24.
Fixes:
The following container image security vulnerabilities have been fixed:
ISSUE Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
June 27, 2023
Security bulletin (all minor versions)
A number of vulnerabilities have been discovered in Envoy, which is used in Anthos Service Mesh (ASM). These were reported separately as GCP-2023-002.
For more information, see the GCP-2023-016 security bulletin.
June 23, 2023
Release 1.14.6
Anthos clusters on bare metal 1.14.6 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.6 runs on Kubernetes 1.25.
Functionality changes:
- Upgraded etcd version to v3.4.26-0-gke.0.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
June 22, 2023
Release 1.15.2
Anthos clusters on bare metal 1.15.2 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.15.2 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Functionality changes:
Added preflight check to make sure control plane and load balancer nodes aren't in maintenance mode before an upgrade.
Upgraded etcd version to v3.4.26-0-gke.0.
Fixes:
Fixed an issue where containerd didn't restart when there was a version mismatch. This issue caused an inconsistent containerd version within the cluster.
Fixed an issue where the
spec.proxy.noProxy
value wasn't used in the Google Cloud connectivity preflight check (bmctl check gcp
).Fixed an issue that caused the logging agent to use continuously increasing amounts of memory. The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
June 16, 2023
Security bulletin (all minor versions)
Two new security issues were discovered in Kubernetes where users may be able to launch containers that bypass policy restrictions when using ephemeral containers and either ImagePolicyWebhook (CVE-2023-2727) or the ServiceAccount admission plugin (CVE-2023-2728).
For more information, see the GCP-2023-014 security bulletin.
June 01, 2023
Release 1.13.8
Anthos clusters on bare metal 1.13.8 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.13.8 runs on Kubernetes 1.24.
Fixes:
Fixed an issue that prevented Anthos clusters on bare metal from restoring a high-availability quorum for nodes that use
/var/lib/etcd
as a mountpoint.Fixed an upgrade race condition between a node and the CNI, which could trigger two worker nodes to upgrade simultaneously.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
May 31, 2023
Release 1.15.1
Anthos clusters on bare metal 1.15.1 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.15.1 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Functionality changes:
Updated the cluster snapshot capability so that information can be captured for the target cluster even when the cluster custom resource is missing or unavailable.
Improved
bmctl
error reporting for failures during the creation of a bootstrap cluster.Added support for using the
baremetal.cluster.gke.io/maintenance-mode-deadline-seconds
cluster annotation to specify the maximum node draining duration, in seconds. By default, a 20-minute (1200 seconds) timeout is enforced. When the timeout elapses, all pods are stopped and the node is put into maintenance mode. For example to change the timeout to 10 minutes, add the annotationbaremetal.cluster.gke.io/maintenance-mode-deadline-seconds: "600"
to your cluster.Added
node_pool_name
to theanthos_baremetal_node_os_count
metric.
Fixes:
Fixed an issue that caused the
bmctl restore
command to stop responding for clusters with manually configured load balancers.Fixed an issue that caused health checks to report failure when they find a Pod with a status of
TaintToleration
even when the replicaset for the Pod has sufficient Pods running.Fixed an issue that prevented Anthos clusters on bare metal from restoring a high-availability quorum for nodes that use
/var/lib/etcd
as a mountpoint.Fixed an issue that caused conflicts with third-party Ansible automation.
Fixed an issue where invalid kubelet image pull settings, such as negative values, resulted in update job failures. Unchecked job failures generate an excessive accumulation of kubelet configuration backup files.
Fixed a cluster upgrade issue that prevented some control plane nodes from rejoining a cluster configured for high availability.
The following container image security vulnerabilities have been fixed:
- CVE-2018-1099
- CVE-2019-19906
- CVE-2020-8032
- CVE-2021-3468
- CVE-2021-43784
- CVE-2022-2097
- CVE-2022-2196
- CVE-2022-3424
- CVE-2022-3707
- CVE-2022-4129
- CVE-2022-4304
- CVE-2022-4379
- CVE-2022-4382
- CVE-2022-4450
- CVE-2022-4904
- CVE-2022-24407
- CVE-2022-29162
- CVE-2022-41723
- CVE-2022-41725
- CVE-2023-0045
- CVE-2023-0215
- CVE-2023-0286
- CVE-2023-0458
- CVE-2023-0461
- CVE-2023-1073
- CVE-2023-1074
- CVE-2023-1076
- CVE-2023-1077
- CVE-2023-1078
- CVE-2023-1079
- CVE-2023-1118
- CVE-2023-1281
- CVE-2023-1513
- CVE-2023-1611
- CVE-2023-1670
- CVE-2023-1829
- CVE-2023-1855
- CVE-2023-1872
- CVE-2023-1989
- CVE-2023-1990
- CVE-2023-1998
- CVE-2023-2162
- CVE-2023-2194
- CVE-2023-21102
- CVE-2023-22998
- CVE-2023-23004
- CVE-2023-23559
- CVE-2023-25012
- CVE-2023-26545
- CVE-2023-27487
- CVE-2023-27488
- CVE-2023-27491
- CVE-2023-27492
- CVE-2023-27493
- CVE-2023-27496
- CVE-2023-28328
- CVE-2023-28466
- CVE-2023-28484
- CVE-2023-29469
- CVE-2023-30456
- CVE-2023-30772
- CVE-2023-32269
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
May 24, 2023
Release 1.14.5
Anthos clusters on bare metal 1.14.5 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.5 runs on Kubernetes 1.25.
Fixes:
- Fixed an issue that caused a continuous increase in memory usage for
stackdriver-log-forwarder
Pods. - Fixed an issue that caused the
bmctl restore
command to stop responding for clusters with manually configured load balancers. - Fixed an issue that caused preflight checks to fail for clusters configured with
spec.proxy.noProxy
settings. - Fixed an upgrade issue where adding
upgradeStrategy.parallelUpgrade.concurrentNodes
to the NodePool spec (for a parallel upgrade) caused the upgrade operation to fail. - Fixed an issue that caused conflicts with third-party Ansible automation.
- Fixed an issue that prevented Anthos clusters on bare metal from restoring a high-availability quorum for nodes that use
/var/lib/etcd
as a mountpoint. - Fixed a cluster upgrade issue that prevented some control plane nodes from rejoining a cluster configured for high availability.
- Fixed an upgrade race condition between a node and the CNI, which could result in two worker nodes to upgrade simultaneously.
- The following container image security vulnerabilities have been fixed:
- CVE-2022-3821
- CVE-2022-4415
- CVE-2022-4450
- CVE-2022-29458
- CVE-2022-41723
- CVE-2022-41725
- CVE-2023-0045
- CVE-2023-0215
- CVE-2023-0286
- CVE-2023-0386
- CVE-2023-0461
- CVE-2023-1077
- CVE-2023-1078
- CVE-2023-1118
- CVE-2023-1281
- CVE-2023-1670
- CVE-2023-1829
- CVE-2023-1989
- CVE-2023-23559
- CVE-2023-27487
- CVE-2023-27488
- CVE-2023-27491
- CVE-2023-27492
- CVE-2023-27493
- CVE-2023-27496
- CVE-2023-28466
- CVE-2023-31436
- CVE-2023-32233
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
May 10, 2023
CentOS Linux 8 Support Deprecated
CentOS Linux 8 reached its end of life (EOL) on December 31st, 2021. We strongly recommend that you migrate to one of the other supported operating systems from Anthos clusters on bare metal. All support for CentOS is removed from Anthos clusters for bare metal release 1.17 (December 2023) and subsequent releases.
April 27, 2023
Release 1.15.0
Anthos clusters on bare metal 1.15.0 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.15.0 runs on Kubernetes 1.26.
If you use a third-party storage vendor, check the GDCV Ready storage partners document to make sure the storage vendor has already passed the qualification for this release of GKE on Bare Metal.
Version 1.12 end of life: In accordance with the Anthos Version Support Policy, version 1.12 (all patch releases) of Anthos clusters on bare metal has reached its end of life and is no longer supported.
Cluster lifecycle:
- Upgraded from Kubernetes version 1.25 to version 1.26.
- GA: Set in-place upgrade (without bootstrap cluster) as the default upgrade method for self-managed clusters.
- GA: Added support for configuring worker node pools for parallel node upgrades to significantly reduce upgrade times. Added a
minimumAvailableNodes
field to specify a minimum number of nodes to keep available for workloads throughout the upgrade. - Preview: Added support for parallel upgrades of worker node pools.
- Added support for Red Hat Enterprise Linux (RHEL) version 8.7.
- Added support for Ubuntu 22.04 LTS.
- GA: Added support for increasing the number of IP addresses for Services after cluster creation. For more information, see Increase service network range.
- Preview: Added ability to configure kubelet image pull settings for node pools. For more information, see Configure kubelet image pull settings.
- Streamlined the snapshot uploading and sharing process.
- GA: Added support of Control group v2 (cgroup v2).
- Preview: Added a separate instance of etcd for the
etcd-events
object. - Updated
cert-manager
to version 1.17.2. - Updated automated API enablement when you run
bmctl create config
with the--enable-apis
flag. The following APIs are added to the enablement list:- Enable
storage.googleapis.com
as a required API. - Enable
gkeonprem.googleapis.com
as a recommended API.
- Enable
- Added a new field
status.failures
to the NodePool custom resource to aggregate failures across machines in the NodePool. - Added a new condition type
PreflightCheckSuccessful
to the NodePool custom resource. This condition type summarizes the preflight check status across machines in the NodePool.
Networking:
- Added support for ClusterDNS to specify order for
upstreamNameServers
with anorderPolicy
. Allowed values fororderPolicy
arerandom
,round_robin
, orsequential
. The default value israndom
.
Observability:
- Added support for filtering application logs. This feature can reduce application logging billing and network traffic from the cluster to Cloud Logging. For more information, see Filter application logs.
GA: Fully managed Cloud Monitoring Integration dashboards:
- In the next Anthos release (version 1.16), the following dashboards in Cloud Monitoring Sample Library are unavailable:
- Anthos cluster control plane uptime
- Anthos cluster node status
- Anthos cluster pod status
- Anthos utilization metering
- GKE on-prem node status
- GKE on-prem control plane uptime
- GKE on-prem pod status
- GKE on-prem vSphere vm health status
- In the next Anthos release (version 1.16), the following customized dashboards aren't created when you create a new cluster:
- Anthos cluster control plane uptime
- Anthos cluster pod status
- Anthos cluster node status
- Anthos cluster VM status
- An added Anthos integration page is available from the Cloud Monitoring Integration page. The Anthos integration includes descriptions and previews for the predefined Anthos dashboards:
- Anthos Cluster Control Plane Uptime
- Anthos Cluster Node Status
- Anthos Cluster Pod Status
- Anthos Cluster KubeVirt VM Status
- Anthos Cluster Utilization Metering
For more information, see Use predefined dashboards.
- In the next Anthos release (version 1.16), the following dashboards in Cloud Monitoring Sample Library are unavailable:
Preview: Added support for system metrics when you use Google Cloud Managed Service for Prometheus.
Security and Identity:
- Preview: Added support for Binary Authorization, a service on Google Cloud that provides software supply-chain security for container-based applications. For more information, see Binary Authorization for Anthos clusters overview.
- Preview: Added support for VPC Service Controls, which provides additional security for your clusters to help mitigate the risk of data exfiltration.
- Improved security by disabling port 10255, the kubelet read-only port, by default. For more information, see Disable kubelet read-only port in Hardening your cluster's security.
Functionality changes:
- Replacing taints and labels. Clusters created and upgraded to Anthos clusters on bare metal version 1.15.0 and higher have
node-role.kubernetes.io/control-plane:*
taints andnode-role.kubernetes.io/control-plane
labels. These new taints and labels replace thenode-role.kubernetes.io/master
label andnode-role.kubernetes.io/master:*
taints on new and upgraded control plane nodes.
Networking changes:
- Replaced the anetd CNI plugin for the bootstrap cluster with kindnet.
- Increased eBPF map limit to 512 K to allow for more load balancer Services.
- Upgraded CoreDNS to version 1.9.4.
Anthos VM Runtime:
- Moved the Anthos VM Runtime release notes to a separate page in the Anthos VM Runtime documentation section.
Fixes:
- Fixed an issue that caused the
bmctl reset nodes
command to fail if thebmctl-workspace
directory was empty. - Fixed an intermittent issue that caused the
bmctl upgrade cluster
command to indicate that the operation was complete before the cluster was in a ready state.
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
April 25, 2023
Release 1.13.7
Anthos clusters on bare metal 1.13.7 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.13.7 runs on Kubernetes 1.24.
Fixes:
The following container image security vulnerability has been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
April 19, 2023
Release 1.14.4
Anthos clusters on bare metal 1.14.4 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.4 runs on Kubernetes 1.25.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
April 12, 2023
Kubernetes image registry redirect
As of March 21, 2023, traffic to k8s.gcr.io
is redirected to registry.k8s.io
, following the community announcement. This change is happening gradually to reduce disruption, and should be transparent for most Anthos clusters.
To check for edge cases and mitigate potential impact to your clusters, follow the step-by-step guidance in k8s.gcr.io Redirect to registry.k8s.io - What You Need to Know.
March 31, 2023
Cluster lifecycle improvements 1.13.1 and later
Starting with Anthos clusters on bare metal release 1.13.1, you can use the Google Cloud console or the gcloud CLI to create admin clusters. For more information, see the documentation for your version of Anthos clusters on bare metal:
March 28, 2023
Release 1.12.9
Anthos clusters on bare metal 1.12.9 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.12.9 runs on Kubernetes 1.23.
FIxes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
March 24, 2023
Release 1.14.3
Anthos clusters on bare metal 1.14.3 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.3 runs on Kubernetes 1.25.
Fixes:
- Improved maintenance mode operation by ignoring non-running pods on nodes.
- Updated etcd version to version 3.4.21-0-gke.1 to resolve an issue that could lead to watch starvation and non-operational watch for resources.
- Updated kubernetes version to 1.25.6-gke.1000 to honor exponential backoff in job controller.
- The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
March 21, 2023
Release 1.13.6
Anthos clusters on bare metal 1.13.6 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.13.6 runs on Kubernetes 1.24.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
March 09, 2023
Cluster lifecycle improvements 1.13.1 and later
Starting with Anthos clusters on bare metal release 1.13.1, you can use the Google Cloud console or the gcloud CLI to upgrade admin and user clusters managed by the Anthos On-Prem API. If your cluster is at version 1.13.0 or lower, you must use bmctl
to upgrade the cluster.
For more information about using the console or the gcloud CLI for upgrades, see the documentation for your version of Anthos clusters on bare metal:
March 02, 2023
Release 1.12.8
Anthos clusters on bare metal 1.12.8 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.12.8 runs on Kubernetes 1.23.
Fixes:
Updated Anthos Identity Service to better handle concurrent authentication webhook requests.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
March 01, 2023
Release 1.14.2
Anthos clusters on bare metal 1.14.2 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.2 runs on Kubernetes 1.25.
Fixes:
- Updated Anthos Identity Service to better handle concurrent authentication webhook requests.
- Updated
stackdriver-operator
to set CPU and memory resource limits. - The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
February 23, 2023
Release 1.13.5
Anthos clusters on bare metal 1.13.5 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.13.5 runs on Kubernetes 1.24.
Fixes:
Updated Anthos Identity service to better handle concurrent authentication webhook requests.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
February 07, 2023
Release 1.12.7
Anthos clusters on bare metal 1.12.7 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.12.7 runs on Kubernetes 1.23.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
January 27, 2023
1.14.0 Upgrade problem
Control plane nodes for Anthos clusters on bare metal use Kubernetes taints to prevent workload pods from being scheduled on them. When you upgrade version 1.13 Anthos clusters to version 1.14.0, the control plane nodes lose required taints. We recommend that you skip upgrading to version 1.14.0 and upgrade to version 1.14.1 directly.
This problem doesn't cause upgrade failures, but pods that aren't supposed to run on the control plane nodes may start doing so. These workload pods can overwhelm control plane nodes and lead to cluster instability. This issue has security implications, as well. We strongly recommend that you not upgrade your clusters to version 1.14.0, but upgrade instead to a subsequent release version with the fix.
For more information about the issue, including workaround instructions, see the Clusters upgraded to 1.14.0 lose master taints known issue.
Release 1.14.1
Anthos clusters on bare metal 1.14.1 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.1 runs on Kubernetes 1.25.
Fixes:
- Fixed an issue with the anthos-cluster-operator that caused CertificateSigningRequest (CSR) events to be missed during reconciliation steps. The lack of signing resulted in Istio crashlooping.
- Fixed an issue that prevented the Pod CIDR for nodes from being adjusted from the default /24 mask size to account for the maxPodsPerNode cluster setting.
- Fixed an issue that removed taints from control plane nodes when upgrading clusters to version 1.14.0.
- The following container image security vulnerabilities have been fixed:
- CVE-2021-3759
- CVE-2021-46848
- CVE-2022-3169
- CVE-2022-3524
- CVE-2022-3564
- CVE-2022-3565
- CVE-2022-3594
- CVE-2022-3640
- CVE-2022-3643
- CVE-2022-40303
- CVE-2022-40304
- CVE-2022-41849
- CVE-2022-41850
- CVE-2022-42328
- CVE-2022-42329
- CVE-2022-42895
- CVE-2022-42896
- CVE-2022-42898
- CVE-2022-44638
- CVE-2022-47518
- CVE-2022-47519
- CVE-2022-47520
- CVE-2022-47521
Functionality changes:
- Changed the behavior for periodic health checks during upgrades. Now, during the upgrade process, existing periodic health checks continue to run in the admin cluster. Once the cluster is upgraded to the next version, the previous version periodic health checks are replaced with periodic health checks for the new version.
- Lowered the priority of health check jobs to minimize contention for resources.
- Changed the etcd history compaction interval from the default of 5 minutes to 2.5 minutes. This value is set in the
kube-apiserver.yaml
file.
Known issues:
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
January 26, 2023
Release 1.13.4
Anthos clusters on bare metal 1.13.4 is now available for download. To upgrade, see Upgrade clusters. Anthos clusters on bare metal 1.13.4 runs on Kubernetes 1.24.
Fixed an issue with the anthos-cluster-operator
that caused CertificateSigningRequest (CSR) events to be missed during reconciliation steps. The lack of signing resulted in Istio crashlooping.
The following container image security vulnerabilities have been fixed:
- CVE-2021-3759
- CVE-2021-4037
- CVE-2021-46848
- CVE-2022-1184
- CVE-2022-20421
- CVE-2022-2978
- CVE-2022-3169
- CVE-2022-3176
- CVE-2022-3524
- CVE-2022-3564
- CVE-2022-3565
- CVE-2022-3586
- CVE-2022-3594
- CVE-2022-3621
- CVE-2022-3640
- CVE-2022-3643
- CVE-2022-3646
- CVE-2022-3903
- CVE-2022-39188
- CVE-2022-40303
- CVE-2022-40304
- CVE-2022-40307
- CVE-2022-41849
- CVE-2022-41850
- CVE-2022-41916
- CVE-2022-42010
- CVE-2022-42011
- CVE-2022-42012
- CVE-2022-42328
- CVE-2022-42329
- CVE-2022-42895
- CVE-2022-42896
- CVE-2022-42898
- CVE-2022-43680
- CVE-2022-43750
- CVE-2022-44638
- CVE-2022-47518
- CVE-2022-47519
- CVE-2022-47520
- CVE-2022-47521
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
December 21, 2022
Anthos clusters on bare metal release 1.14.0 is now available for download. Note that Anthos clusters on bare metal version 1.14.0 runs on Kubernetes 1.25. Multiple deprecated APIs are deleted in Kubernetes 1.25. Before you upgrade version 1.13 Anthos clusters to version 1.14, check to see if you are affected by the Kubernetes API deletions.
If you aren't affected by the API deletions, see Upgrade clusters in the 1.14 documentation for upgrade instructions.
December 19, 2022
Release 1.13.3
Anthos clusters on bare metal 1.13.3 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.13.3 runs on Kubernetes 1.24.
The following container image security vulnerabilities have been fixed:
- CVE-2022-35737
- CVE-2022-42311
- CVE-2022-33745
- CVE-2022-42309
- CVE-2022-42320
- CVE-2022-42323
- CVE-2022-33748
- CVE-2022-42321
- CVE-2022-33746
- CVE-2022-42310
- CVE-2022-42316
- CVE-2022-42322
- CVE-2022-42319
- CVE-2022-42325
- CVE-2022-42315
- CVE-2022-42324
- CVE-2022-42314
- CVE-2022-42317
- CVE-2022-42312
- CVE-2022-42318
- CVE-2022-42313
- CVE-2022-42326
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
December 14, 2022
Release 1.12.6
Anthos clusters on bare metal 1.12.6 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.12.6 runs on Kubernetes 1.23.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
December 13, 2022
Release 1.14.0
Anthos clusters on bare metal 1.14.0 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.14.0 runs on Kubernetes 1.25.
Improved cluster lifecycle functionalities:
Upgraded from Kubernetes version 1.24 to 1.25.
Enabled customers to run the latest health and preflight checks by running the command
bmctl check cluster –check-image-version=latest
. Setting thecheck-image-version
flag to 'latest' ensures that clusters are examined for more recent issues, including issues discovered after a release.Preview: Added support of Control group v2 (cgroup v2).
GA: Added automatic reservation of CPU and memory resources on cluster nodes so that system daemons have the resources they require.
Optimized the consumption of resources by components such as
cluster-operator
,cap-manager
,preflight-check operator
, andlifecycle-controllers-manager
.GA: Enabled automatic and periodic health checks on all clusters.
Networking:
Preview: Added support for turning on kube-proxy-free mode for cluster objects. WARNING: This operation is not reversible. Once enabled, it cannot be disabled.
Changed behavior of Dataplane V2 so that it drops a packet if no service backends are available. Previously, the packet was passed to the kernel stack.
Enabled automatic API rate limit adjustments in Dataplane V2.
Observability:
Added severity level to container logs.
Enabled collection of uptime and other Kubernetes resource metrics from the kubelet summary API.
Enabled Stackdriver log forwarder in the bootstrap cluster. This log forwarder publishes bootstrap container logs to Cloud Logging.
Security and Identity:
GA: Added feature enabling cluster administrators to configure RBAC policies based on Azure Active Directory (AD) groups. Groups information for users belonging to more than 200 groups can now be retrieved.
GA: Added secure computing mode (seccomp) support. Running containers with a seccomp profile improves the security of a cluster because it restricts the system calls that containers are allowed to make to the kernel.
Added annotation in the cluster configuration file which allows customers to disable the kubelet read-only port. After disabling the read-only port, customers have to change their cluster configurations so that workloads use the kubelet secure port.
VM Runtime:
GA: Added support for guest OS booting of UEFI. Previously, only BIOS was supported.
Preview: Enabled Terraform scripting to create VMs on an Anthos cluster. For more information, including usage instructions, an input reference, and examples, see the terraform-google-anthos-vm GitHub repository.
Preview: Add support for non-uniform memory access (NUMA) awareness. When enabled, all communication within the VM is local to the NUMA node, thus avoiding the performance cost of data transactions with remote memory locations.
Preview: Enabled multicast traffic for VMs.
Added Anthos VM Runtime preflight checks to validate hardware accelerator configuration.
Enabled configuration of storage's volume mode (block or filesystem) and access modes, such as RWO and RWX.
Enabled means to configure the storage class of a scratch space. A scratch space is sometimes required when importing or uploading a VM disk image.
Added support for configuring
cloud-init
, usingvirtctl
.Enabled ability to disable auto-installation of the guest agent binary. After the initial guest agent installation, you can set the
autoInstallGuestAgent
flag tofalse
so that the binary doesn't mount in subsequent restarts.Enabled the support of multiple network interfaces, by default, for all clusters.
Improved security for creating a VM with
kubectl virt create
. If an initial password is specified, it is now stored in a secret and not as a VM annotation.Reduced the permissions of the network controller.
Changed default to always use Asynchronous IO mode (AIO) in order to reduce QEMU memory pressure.
Added VM creation and disk provisioning times to Prometheus metrics.
Added support for the Tesla T4 GPU.
Enabled reset of GPU card to its original status when GPU functionality is disabled.
Enabled ability to disable Anthos VM Runtime when it's in the enabling state and custom resource definitions haven't yet been installed.
Added the following command, which allows you to display the VM screen:
kubectll virt vnc --screenshot VM_NAME
.Fixed the IP address update for Windows guest VMs.
Resolved the MacVTap interface creation failure which occurred when the name of the interface was too long.
Fixed attaching VM disk using SATA driver.
Fixed issue so that setting
disableCDIUploadProxyVIP
to true correctly disables thecdi-uploadproxy
service.Fixed issue so that specifying a
PersistentVolumeClaim
(PVC) with an empty underlyingPersistentVolume
(PV) correctly creates the underlying empty disk format (raw or qcow2).Enforced VM names to follow the standard RFC1123 format.
Fixed issue so that ISO image is correctly imported from a Cloud Storage bucket.
Fixed benign crash looping of the NVIDIA device plugin and the Multi-Instance GPU (MIG) manager when all GPU cards are allocated to a VM.
Fixed issue so that
virt-launcher
Pod can be created when advanced compute is enabled.
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
December 09, 2022
Release 1.12.5
Anthos clusters on bare metal 1.12.5 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.12.5 runs on Kubernetes 1.23.
Fixes:
The following container image security vulnerabilities have been fixed:
- CVE-2019-25013
- CVE-2021-3326
- CVE-2021-3999
- CVE-2021-4037
- CVE-2021-33574
- CVE-2021-35942
- CVE-2022-1184
- CVE-2022-1586
- CVE-2022-1587
- CVE-2022-2663
- CVE-2022-3061
- CVE-2022-3176
- CVE-2022-3303
- CVE-2022-3586
- CVE-2022-3621
- CVE-2022-3646
- CVE-2022-3649
- CVE-2022-20421
- CVE-2022-23218
- CVE-2022-23219
- CVE-2022-32221
- CVE-2022-33745
- CVE-2022-33746
- CVE-2022-33748
- CVE-2022-34903
- CVE-2022-37434
- CVE-2022-39188
- CVE-2022-40307
- CVE-2022-42309
- CVE-2022-42310
- CVE-2022-42311
- CVE-2022-42312
- CVE-2022-42313
- CVE-2022-42314
- CVE-2022-42315
- CVE-2022-42316
- CVE-2022-42317
- CVE-2022-42318
- CVE-2022-42319
- CVE-2022-42320
- CVE-2022-42321
- CVE-2022-42322
- CVE-2022-42323
- CVE-2022-42324
- CVE-2022-42325
- CVE-2022-42326
- CVE-2022-43680
- CVE-2022-43750
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
November 22, 2022
Release 1.13.2
Anthos clusters on bare metal 1.13.2 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.13.2 runs on Kubernetes 1.24.
Fixes:
- Ensured the
kubeadmconfig
Secret is deleted when a Cluster API node is removed. - Added preflight check command (
bmctl check preflight
) that you can use when upgrading version 1.13 and higher clusters. - Updated the commands
bmctl check preflight
andbmctl create cluster
so that they fail if worker or control-plane nodes have docker credentials in/root/.docker/config.json
. (Anthos clusters on bare metal version 1.13 and higher can no longer use Docker Engine as a container runtime. All clusters must use the default container runtimecontainerd
). - The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
November 18, 2022
Release 1.11.8
Anthos clusters on bare metal 1.11.8 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.11.8 runs on Kubernetes 1.22.
Fixes:
The following container image security vulnerabilities have been fixed:
- CVE-2019-25013
- CVE-2020-16156
- CVE-2021-3326
- CVE-2021-3999
- CVE-2021-4037
- CVE-2021-33574
- CVE-2021-35942
- CVE-2022-1184
- CVE-2022-1586
- CVE-2022-1587
- CVE-2022-2663
- CVE-2022-3061
- CVE-2022-3116
- CVE-2022-3176
- CVE-2022-3303
- CVE-2022-3586
- CVE-2022-3621
- CVE-2022-3646
- CVE-2022-3649
- CVE-2022-20421
- CVE-2022-23218
- CVE-2022-23219
- CVE-2022-33745
- CVE-2022-33746
- CVE-2022-33748
- CVE-2022-37434
- CVE-2022-39188
- CVE-2022-40307
- CVE-2022-42309
- CVE-2022-42310
- CVE-2022-42311
- CVE-2022-42312
- CVE-2022-42313
- CVE-2022-42314
- CVE-2022-42315
- CVE-2022-42316
- CVE-2022-42317
- CVE-2022-42318
- CVE-2022-42319
- CVE-2022-42320
- CVE-2022-42321
- CVE-2022-42322
- CVE-2022-42323
- CVE-2022-42324
- CVE-2022-42325
- CVE-2022-42326
- CVE-2022-43750
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
November 08, 2022
Release 1.12.4
Anthos clusters on bare metal 1.12.4 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.12.4 runs on Kubernetes 1.23.
Fixes:
Increased the CPU limit for the
metrics-server
Pod to prevent it from frequently restarting.The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
November 07, 2022
Security bulletin (1.11, 1.12, and 1.13)
A security vulnerability, CVE-2022-39278, has been discovered in Istio, which is used in Anthos Service Mesh, that allows a malicious attacker to crash the control plane.
For instructions and more details, see the Anthos clusters on bare metal security bulletin.
November 01, 2022
Cluster lifecycle improvements in 1.13 and later
Preview: You can use the Google Cloud console to create user clusters, delete user clusters, and to add and remove node pools from a user cluster. To explore the new feature, try out the tutorial Create an Anthos on bare metal user cluster on Compute Engine VMs using the console.
October 31, 2022
Release 1.13.1
Anthos clusters on bare metal 1.13.1 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.13.1 runs on Kubernetes 1.24.
Fixes:
- Increased the CPU limit for the
metrics-server
Pod to prevent it from frequently restarting. - Updated the command
bmctl enable/disable vmruntime
to block the CLI and periodically show the status of VMRuntime. The CLI remains blocked until the command has finished and VMRuntime's ready status is true, or until a default period of 10 mins has expired. - Removed deprecated
IPv6DualStack
featureGate
field that blocks clusters from upgrading to Anthos clusters on bare metal version 1.13.0. Fixed the
no path ID mapping for prefix
error that sometimes occurred whenbgpd
updatedbgpsession
.The following container image security vulnerabilities have been fixed:
- CVE-2018-25032
- CVE-2021-22924
- CVE-2021-22946
- CVE-2021-22947
- CVE-2021-23840
- CVE-2021-23841
- CVE-2021-3999
- CVE-2021-43618
- CVE-2021-46828
- CVE-2022-0778
- CVE-2022-1292
- CVE-2022-1586
- CVE-2022-1587
- CVE-2022-1664
- CVE-2022-1679
- CVE-2022-2097
- CVE-2022-2257
- CVE-2022-2509
- CVE-2022-2509
- CVE-2022-2526
- CVE-2022-27776
- CVE-2022-27781
- CVE-2022-27782
- CVE-2022-3172
- CVE-2022-32206
- CVE-2022-32208
- CVE-2022-34903
- CVE-2022-37434
- CVE-2022-39278
- CVE-2022-40674
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
October 28, 2022
Anthos clusters on bare metal 1.11.7 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.11.7 runs on Kubernetes 1.22.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues: For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
October 05, 2022
Release 1.12.3
Anthos clusters on bare metal 1.12.3 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.12.3 runs on Kubernetes 1.23.
Fixes:
Updated the container image to resolve a YAML text/template vulnerability.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
September 29, 2022
Release 1.13.0
Anthos clusters on bare metal 1.13.0 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.13.0 runs on Kubernetes 1.24.
The dockershim component in Kubernetes enables cluster nodes to use the Docker Engine container runtime. However, Kubernetes 1.24 removed the dockershim component. Since Anthos clusters on bare metal version 1.13 runs on Kubernetes 1.24, version 1.13 and higher clusters can no longer use Docker Engine as a container runtime. All clusters must use the default container runtime containerd.
Improved cluster lifecycle functionalities:
Upgraded from Kubernetes version 1.23 to 1.24:
Reverted some of the changes Kubernetes and the
kubeadm
tool made to certain labels and taints on control plane nodes. Changes were reverted so that older versions of Anthos clusters on bare metal remain supported. As a result, control plane nodes have the following labels and taints:node-role.kubernetes.io/master
labelnode-role.kubernetes.io/control-plane
labelnode-role.kubernetes.io/master:NoSchedule
taint
Upgraded from
kubeadm.k8s.io/v1beta2
tokubeadm.k8s.io/v1beta3
since the former is deprecated.Stopped automatic generation of Secret API objects containing service account tokens for every Service Account. For more information, see the
LegacyServiceAccountTokenNoAutoGeneration
section of the upgrade notes.
Breaking change: Version 1.12 clusters that use Docker Engine can upgrade to 1.13 only if the new container runtime is specified as
containerd
. Blocked the creation of new 1.13 clusters that use Docker Engine as the container runtime.Preview: Added feature so that upgrades of an admin/hybrid/standalone cluster can proceed without a bootstrap cluster. Management of Anthos clusters on bare metal is now fully conformant to the Kubernetes Resource Model.
Added support of Red Hat Enterprise Linux (RHEL) 8.6.
Removed an erroneous
CustomResourceDefinition
(app.k8s.io.Application
) from inclusion in the cluster creation process.Fixed vulnerability to YAML injection by switching to safetext/yamltemplate.
GA: Added support for installing Anthos clusters on bare metal, using your own registry service, instead of
gcr.io
. For instructions and additional information, see Use a registry mirror to create clusters.Eliminated false error messaging when the
bmctl create cluster
is run. The message erroneously reported anInvalid value
in thespec.labels
field of NodePool specifications.Added a webhook check to prevent worker node pools from being added to an Admin cluster inadvertently.
Added feature so that resetting a user cluster doesn't require the cluster configuration file.
Reduced
containerd
disk usage by havingcontainerd
store just the uncompressed layers of an image rather than both the compressed and uncompressed layers.Upgraded
containerd
to version 1.6.6.
Networking:
GA: Enabled Dynamic Flat IP with Border Gateway Protocol (BGP) support. This feature lets you configure flat mode using BGP in clusters by leveraging Network Gateway Group and BGP. In this mode the Pod's IP address is visible and routable without masquerading across multiple subdomains. Currently supports advertising IPv4 and IPv6 routes over IPv4 sessions.
GA: Added BGP-based Load Balancer support for IPv6. Added ability to disable the Bundled Ingress feature. Customers should disable this feature if they are using full Anthos Service Mesh (ASM) instead. (Bundled Ingress is unnecessary when full ASM is installed).
Observability:
Preview: Added support of multi-line parsing for Go and Java logs.
GA: Added support for Google Cloud Managed Service for Prometheus (GMP) for application metrics.
Refined
kube-state-metrics
so that only core metrics are collected by default.
Security:
GA: Added Google Groups support for Connect Gateway.
Switched distroless base image for Node Problem Detector.
Changed
anet-operator/cilium-operator
to run as non-root container.Secured communication between
metrics-server
andapi-server
using the Transport Layer Security (TLS) protocol.
VM Runtime:
Fixed a memory leak in
libvirt-go
, which caused unbounded memory growth and risked crashing long-running VMs.Provided guaranteed compute support so that customers can get Guaranteed Quality of Service (QoS)for the VM when needed.
Preview: Enabled Anthos VM to be allocated dedicated host cores. Each VM virtual core can be pinned to a dedicated host core.
Separated GPU installation and deletion logic. If only the container GPU workload is needed, customers can enable the GPU without having to enable VM Runtime.
Added support for the T4 GPU card.
Enabled automatic use of the
VirtualMachineDisk
name as the disk serial number. This change makes it easier for customers to identify the disk in the VM.Enabled KubeVM
cloud-init
API and startup script API.Added new CLI command (
Virtctl
) for resetting Windows VM password.Fixed the following container image security vulnerability: CVE-2022-1798
Added feature that stops NVIDIA device plugins from crashing if a GPU card hasn't been allocated to a container.
Added support for automatic VM restarts after a configuration update. Previously, customers needed to stop the VM, apply the change, and then re-start the VM. To use the feature, set the
autoRestartOnConfigurationChange
flag to true in theVirtualMachine
custom resource.Improved the Kubernetes audit log of VM operations so that it contains detailed VM configuration and update information.
Fixed flooding of logs with cluster events that arise when a VM encounters disk I/O errors.
Added KubeVM roles. By binding with these roles, customers are granted permission to resources that manage VMs.
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
September 26, 2022
Release 1.11.6
Anthos clusters on bare metal 1.11.6 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.11.6 runs on Kubernetes 1.22.
Fixes:
Updated the container image to resolve a yaml text/template vulnerability.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
August 30, 2022
Release 1.11.5
Anthos clusters on bare metal 1.11.5 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.11.5 runs on Kubernetes 1.22.
Fixes:
Increased the default storage size limit of
etcd
to 6 GiB.The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
August 25, 2022
Release 1.12.2
Anthos clusters on bare metal 1.12.2 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.12.2 runs on Kubernetes 1.23.
Features:
- Added
–use-disk
flag tobmctl backup cluster
command to use the disk instead of the in-memory buffer to back up a cluster. Use this option when available RAM is limited on your admin workstation. - Added
--quiet
flag tobmctl check cluster -- snapshot
command to suppress logging to the console during the snapshot creation.
Fixes:
- Added caching for the Cloud Audit Logging feature status to avoid unnecessary checks and improve performance.
- Increased the etcd default DB size to 6GiB by default to address
NO_SPACE_ALARM
in high-scale clusters. - Fixed a
libseccomp
package incompatibility issue. - Fixed an issue with the machine-reset job getting stuck.
- Fixed an issue that caused continuous, unneeded cluster reconciliation operations.
- Fixed an issue that prevented the node problem detector from running after a cluster upgrade.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
August 23, 2022
Release 1.10.8
Anthos clusters on bare metal 1.10.8 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.10.8 runs on Kubernetes 1.21.
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
Anthos VM Runtime
Anthos VM Runtime is Generally Available (GA). Some features and capabilities are available for Preview only, as indicated in the following descriptions:
- Upgraded Kubevirt to version 0.49.
- Upgraded Containerized Data Importer (CDI) to version 1.43.0.
- Added
bmctl
command to enable or disable Anthos VM Runtime on user clusters. - Added automatic upgrade of Anthos VM Runtime when upgrading Anthos clusters on bare metal.
- Preview: Added ability to configure an eviction policy that controls how VMs automatically migrate to other hosts during maintenance events.
- Preview: Added non-disruptive upgrading of VM runtime during live migration (that is, when VMs are unobtrusively migrated from one node to another).
VM APIs:
- Simplified VM Compute API.
- Added ability to create and manage disk resources for VMs that use Anthos VM Runtime.
- Added ability to schedule VMs using standard Kubernetes scheduling primitives.
- Preview: Added ability to use GPUs in VMs.
- Added more access management capabilities to VM Guest Environment.
- Preview: Added support for guest OS booting of UEFI. Previously, only BIOS was supported.
Observability:
- Integrated VM telemetry and console logs into Google Cloud console. Telemetry information and log data are critical for monitoring the status of VMs and for troubleshooting problems with your cluster VMs.
- Added VM CPU and memory metrics to Cloud Monitoring. These metrics can be viewed in the Anthos clusters VM status dashboard.
- Added ability to view console logs for VMs that use Anthos VM Runtime.
- Added logs that audit VM pods.
Guest OS support:
Added support for the following guest OS versions running on a Virtual Machine:
- Windows Server 2019
- Windows Server 2016
- Windows 10
- Red Hat Enterprise Linux (RHEL) 8
- RHEL 7
- CentOS 8
- CentOS 7
- Ubuntu 20.04
- Ubuntu 18.04
VM networking features:
- IPAMv4: Static IP Allocation for VM interfaces.
- IP and MAC Stickiness for VM interfaces.
- IPAMv4: DHCP for VM interfaces.
- VLAN tagging support for VM Interfaces.
- Multi-NIC for VM interfaces through native Dataplane V2 support (macvtap + Dataplane V2).
- Static routes and DNS configurations at per-network basis.
- NetworkPolicy enforcement at per-network basis.
- Validating admission webhooks for Network and NetworkInterface object.
- Network Mutation, allow the mutations of Gateway, DNS and the customized network routes in the network custom resource. The parent interface for the VM and the VLAN ID are not mutable. VMs that were already running before the network configuration change need to be restarted to pick up the change.
- Added command to restart all VMs in a network.
Graceful IP release for VMs:
- During VM migration, the IP isn't released.
- IP addresses are released for VMs that are deleted or stopped.
For more information on networking, see Create and use virtual networks for Anthos VM Runtime.
VM Runtime issues:
When kubevirt is configured, customers should ensure that TOR switches have MAC learning enabled.
If you choose to manually run a DHCP
ipconfig /renew
command in a Windows VM, you should first perform a DHCP release, using theipconfig /release
command. In other words, the sequence for manually performing a DHCP renewal in a Windows environment is the following:ipconfig /release ipconfig /renew
August 04, 2022
Release 1.11.4
Anthos clusters on bare metal 1.11.4 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.11.4 runs on Kubernetes 1.22.
Fixes:
- Fixed issue in which cluster restores failed when
/var/lib/etcd
is a mount point. - Fixed issue in which attempts to skip minor versions when upgrading weren't blocked. For details about the upgrade policy, see Minor version upgrades.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
August 03, 2022
Release 1.12.1
Anthos clusters on bare metal 1.12.1 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.12.1 runs on Kubernetes 1.23.
Functionality changes:
Increased default memory limits for
coredns
,metallb-controller
,metallb-speaker
,metrics-server
,anthos-cluster-operator
, andcap-controller-manager
.Modified the dashboards
Anthos cluster pod status
andAnthos cluster node status
. Specifically, the following changes were made:- Replaced
cadvisor
resource metrics with summary API resource metrics. - Added
cpu
,memory
, andvolume
utilization metrics.
If you have already installed these dashboards in a project, you need to download the JSON files
Anthos-cluster-pod-status.json
andAnthos-cluster-node-status.json
from the Dashboards for Anthos GitHub repository. You then need to import these JSON files into Cloud Monitoring. For details, see Install sample dashboards.- Replaced
Fixes:
- Fixed issue in which nodes drained or cordoned by
kubectl
were mistakenly marked as schedulable. - Fixed issue in which cluster controller and autoscaler conflicted with each other in the scaling of
istiod
,coredns
, andistio-ingress
Pods. - Fixed issue in which the wrong data type was used in health check log messages, resulting in panic messages.
- Fixed issue in which cluster restores failed when
/var/lib/etcd
is a mount point. - Fixed issue in which attempts to skip minor versions when upgrading weren't blocked. For details about the upgrade policy, see Minor version upgrades.
- Fixed issue in which an external VIP Service of type LoadBalancer would not respond when flat IP mode was enabled.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
Release 1.12.1 ships with containerd
version 1.5.13, which requires libseccomp
version 2.5 or higher. If your system doesn't have libseccomp
version 2.5 or higher installed, update it in advance of upgrading existing clusters to version 1.12.1. Otherwise, you may see errors in cplb-update
Pods for load balancer nodes such as:
runc did not terminate successfully: runc: symbol lookup error: runc:
undefined symbol: seccomp_notify_respond
To install the latest version of libseccomp
in Ubuntu, run the following command:
sudo apt-get install libseccomp-dev
To install the latest version of libseccomp
in CentOS or RHEL, run the following command:
sudo dnf -y install libseccomp-devel
August 01, 2022
Release 1.10.7
Anthos clusters on bare metal 1.10.7 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.10.7 runs on Kubernetes 1.21.
Fixed a
CrashLoopBackOff
error generated bygke-metrics-agent
when application metrics are enabled (that is, whenenableStackdriverForApplications=true
).The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
July 07, 2022
Release 1.10.6
Anthos clusters on bare metal 1.10.6 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.10.6 runs on Kubernetes 1.21.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
June 29, 2022
Release 1.12.0
Anthos clusters on bare metal 1.12.0 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.12.0 runs on Kubernetes 1.23.
The dockershim component in Kubernetes enables cluster nodes to use the Docker Engine container runtime. However, Kubernetes 1.24 removed the dockershim component. Starting from Anthos clusters on bare metal 1.12.0, you will not be able to create new clusters that use the Docker Engine container runtime. All new clusters should use the default container runtime containerd
.
Improved cluster lifecycle functionalities:
Upgraded Anthos clusters on bare metal to use Kubernetes version 1.23.
Upgraded container runtime to
containerd
1.5.Updated preflight check to forward default SSH key if no key is provided.
Added support for new
GCPAccounts
field in the cluster configuration file. This field enables the assignment of acluster-admin
role to end-users.Added labels to control plane, control plane load balancer, and load balancer node pools, so that these different node pools can be distinguished from each other.
Added nodepool reference label to nodes so that worker nodes can be listed in the UI.
Observability:
GA: Added Summary API metrics. These metrics are scraped from the Kubernetes Summary API and provide CPU, memory, and storage metrics for Pods, containers, and Nodes.
Added separate flags to enable logging and monitoring for user applications separately:
EnableCloudLoggingForApplications
andEnableGMPForApplications
. The legacy flagEnableStackdriverForApplications
will be deprecated and removed in future releases.Preview: Added Google Cloud Managed Service for Prometheus to collect application metrics and monitor cluster health.
Upgraded GKE Metrics Agent (gke-metrics-agent) from version 1.1.0 to 1.8.3. This tool scrapes metrics from each cluster node and publishes them in Cloud Monitoring.
Added the following resource utilization metrics. For more information about these and other metrics, see View Anthos clusters on bare metal metrics:
container/cpu/request_utilization
container/cpu/limit_utilization
container/memory/request_utilization
container/memory/limit_utilization
node/cpu/allocatable_utilization
node/memory/allocatable_utilization
pod/volume/utilization
Added sample dashboards for monitoring cluster health to Cloud Monitoring sample dashboards. Customers can install these dashboards with one click.
Scoped down the RBAC permissions of
stackdriver-operator
, a component that performs logging and monitoring.
Security:
AIS CA deprecation. AIS certs are now signed by cluster CA.
Changed
ca-rotation
container image so that it uses a distroless rather than a Debian-based image.RBAC permissions of the
cluster-operator
component have been eliminated or reduced to address elevated permissions.GA: Anthos Identity Service LDAP authentication support.
Networking:
Preview: Enabled creation of IPv6 and Dual Stack LoadBalancer services. Border Gateway Protocol (BGP) is used for Dualstack clusters. Advertising IPv4 and IPv6 routes over IPv4 sessions is supported.
Preview: Added Network Connectivity Gateway feature support to provide HA VPN between Google Cloud and an on-premises Anthos cluster.
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
June 23, 2022
Release 1.11.3
Anthos clusters on bare metal 1.11.3 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.11.3 runs on Kubernetes 1.22.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
June 09, 2022
Release 1.9.8
Anthos clusters on bare metal 1.9.8 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.9.8 runs on Kubernetes 1.21.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
June 02, 2022
Release 1.10.5
Anthos clusters on bare metal 1.10.5 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.10.5 runs on Kubernetes 1.21.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
May 26, 2022
Release 1.11.2
Anthos clusters on bare metal 1.11.2 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.11.2 runs on Kubernetes 1.22.
Starting with Anthos clusters on bare metal release 1.11.2, you can enable or disable Anthos VM Runtime by updating the VMRuntime
custom resource only. The legacy spec.kubevirt
settings in the cluster configuration are no longer supported. The VMRuntime
custom resource is installed by default on version 1.10 and later hybrid, standalone, and user clusters. The VMRuntime
custom resource can't be applied to admin clusters.
If you have Anthos VM Runtime enabled for your Anthos clusters on bare metal, you must disable it before upgrading clusters to version 1.11.2 or higher. If this step is not completed, your cluster upgrade will fail. You can re-enable Anthos VM Runtime after the upgrade is complete.
Starting with Anthos clusters on bare metal release 1.11.2, the Anthos VM Runtime API version has changed from v1alpha1
to v1
. This version change doesn't affect the VMRuntime
custom resource, but most other resources are affected.
Functionality changes:
The
containerd
runtime has been upgraded to 1.5.11-gke.0 to address CVE-2022-24769Added a preflight check that disallows Ubuntu 18.04 distributions with 4.15.x Linux kernels.
Fixes:
Fixed cluster custom resource status reporting for pending reconciliations.
Fixed a
bmctl check cluster
command issue that caused the user cluster kubeconfig Secret to be overwritten.Fixed an issue with manifest installation when
last-applied-config
is broken that caused upgrades to fail.Fixed an issue to ensure that the 20-minute timeout for node draining is enforced during cluster upgrades. This timeout provides ample time for nodes to drain, but ensures that upgrades can always proceed.
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
May 04, 2022
Release 1.10.4
Anthos clusters on bare metal 1.10.4 is now available for download. To upgrade, see Upgrade Anthos on bare metal. Anthos clusters on bare metal 1.10.4 runs on Kubernetes 1.21.
Fixes:
The following container image security vulnerabilities have been fixed:
Role-based access control (RBAC) fixes:
Set
AutomountServiceAccountToken
field for Node Problem Detector jobs andetcd-defrag
Daemonsets to false.Set
capi-kubeadm-bootstrap-controller-manager
to use a dedicated service account.Scoped down
configmap/(get, list, watch)
permissions tometallb-config
resource name.Scoped down
configmap/get
permission tocore-dns-autoscaler
resource name.Removed
services.update
permission for the MetalLBkube-system:controller
role.anetd
Removed Cilium service account and replaced it with the account used by
kubelet
.Removed pod and node access from Cilium cluster role.
Added Cilium cluster role to the
kubelet
service account.Removed
pods/(delete)
role fromcilium-operator
cluster role.Scoped down leases permissions in
cilium-operator
cluster role tocilium-operator-resource-lock
resource name andkube-controller-manager
resource name.
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
May 02, 2022
Release 1.11.1
Anthos clusters on bare metal 1.11.1 is now available for download. To upgrade, see Upgrade Anthos on bare metal. Anthos clusters on bare metal 1.11.1 runs on Kubernetes 1.22.
Fixes:
Resolved cluster installation issue in which cluster status is prematurely declared ready, resulting in a "Failed to wait for applied resources" error.
Added validation that a cluster's
kubeconfig
secret data is correct.Added feature so that
bmctl
outputs line numbers of relevant yaml when a parsing error occurs.Removed the misleading log "Waiting for pod to finish" on pods such as
anetd
that aren't meant to finish.Added automatic inclusion of a control plane's virtual IP address to the cluster
NO_PROXY
list.Role-based access control fixes:
Set
AutomountServiceAccountToken
field for Node Problem Detector jobs to false.Set
capi-kubeadm-bootstrap-controller-manager
to use a dedicated service account.Scoped down
deployment/(update,patch)
permissions to themetrics-server
resource name.Scoped down
configmap/(get, list, watch)
permissions tometallb-config
resource name.anetd:
Removed Cilium service account and replaced it with the account used by
kubelet
.Removed pod and node access from Cilium cluster role.
Added Cilium cluster role to the
kubelet
service account.Removed
pods/(delete)
role fromcilium-operator
cluster role.Scoped down leases permissions in
cilium-operator
cluster role tocilium-operator-resource-lock
resource name andkube-controller-manager
resource name.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
April 27, 2022
Release 1.9.7
Anthos clusters on bare metal 1.9.7 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.9.7 runs on Kubernetes 1.21.
Fixes:
- The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
April 26, 2022
Security bulletin (all minor versions)
Two security vulnerabilities, CVE-2022-1055 and CVE-2022-27666 have been discovered in the Linux kernel. Each can lead to a local attacker being able to perform a container breakout, privilege escalation on the host, or both. These vulnerabilities affect Linux operating systems supported by Anthos clusters on bare metal. For instructions and more details, see the GCP-2022-014 security bulletin.
April 12, 2022
Security bulletin (1.8, 1.9, and 1.10)
A security vulnerability, CVE-2022-23648, has been discovered in containerd's handling of path traversal in the OCI image volume specification. Containers launched through containerd's CRI implementation with a specially-crafted image configuration could gain full read access to arbitrary files and directories on the host.
For more information, see the GCP-2022-013 security bulletin.
March 31, 2022
Release 1.11.0
Anthos clusters on bare metal 1.11.0 is now available for download. To upgrade, see Upgrade Anthos on bare metal. Anthos clusters on bare metal 1.11.0 runs on Kubernetes 1.22.
Containerd is the default runtime in Anthos clusters on bare metal. Support for Docker as a container runtime on Kubernetes nodes will be removed from Anthos clusters on bare metal starting with version 1.13.0. If you use a node image based on Docker container runtime, please migrate your workloads to a Containerd node image as soon as possible. For more details, see Containerd node images.
The structure of the Anthos clusters on bare metal documentation is substantially different from previous versions. For details, see New documentation structure.
Kubernetes 1.22 has deprecated certain APIs, and a list of these deprecated APIs can be found in Kubernetes 1.22 deprecated APIs. In their manifests and API clients, customers need to replace references to the deprecated APIs with references to the newer API calls. For more information, see Deprecated API Migration Guide.
On January 31, 2022, CentOS 8 reached its end of life (EOL). As a result of the EOL, yum repositories stopped working for CentOS, which causes cluster creation and cluster upgrade operations to fail. For a workaround and more information, see Cluster creation or upgrades fail on CentOS.
Improved cluster lifecycle functionalities:
Upgraded Anthos clusters on bare metal to use Kubernetes version 1.22.
Updated
cert-manager
to version 1.5.4.Added error messaging in the
bmctl
command line interface to better surface cluster installation or upgrade failure.Incorporated audit logs into
bmctl
snapshots.Added ability for registry mirror users to customize
containerd
configuration and have it automatically mirror public registry hosts other thangcr.io
.Changed
bmctl update
command so that it extracts manifests before updating a cluster.Added feature so that a cluster
kubeconfig
file automatically renews when the cluster is upgraded and the kubeconfigSecret
is renewed whenever cluster reconciliation takes place.Added support for Red Hat Enterprise Linux (RHEL) and CentOS 8.5.
Added warning to
bmctl
command thatdocker containerRuntime
will not be supported in version 1.13 of Anthos cluster on bare metal.Added support for specifying CIDR blocks in the
NoProxy
section of the cluster's configuration file.Added Service CIDR to
NoProxy
section of a cluster configuration file by default in order to fix a multinic in proxy environment issue.Fixed a multi-NIC in proxy environment issue. Whenever the
NO_PROXY
environment variable is set, it includes the Service CIDR from the cluster specification.
Networking:
GA: Added egress Network Address Translation (NAT) gateway capability to provide persistent, deterministic routing for egress traffic from clusters. For more information, see Configure an egress NAT gateway for external communication.
GA: Added option for BGP bundled load balancer which advertises Load Balancer (LB) Virtual IP addresses (VIPs) to the network using the Border Gateway Protocol (BGP). This feature supports topologies across multiple subnets and can provide greater load-balancing bandwidth than bundled Layer 2 mode.
GA: Enabled SR-IOV. This feature allows you to configure Virtual Functions (VFs) on the supported devices on the nodes of their cluster. It also allows you to define the kernel module you want to bind to the VF.
GA: Enabled IPv4/IPv6 dual-stack support. Clusters can be deployed in a dual-stack network in which IPv4 and IPv6 addresses are assigned to both nodes and pods. By default, IPv4 is in island mode and IPv6 is in flat mode (a simplified network topology).
GA: Enabled static flat network (without BGP). This feature lets you configure a flat mode network for IPv4 addresses. A pod's IPv4 address is visible and routable within the same Layer 2 domain, without having to masquerade as the node's IP address.
Preview: Enabled Dynamic Flat IP with Border Gateway Protocol (BGP) support. This feature lets you configure flat mode using BGP in clusters with the help of Anthos Network Gateway and BGP. In this mode, the pod's IP address is visible and routable without masquerading across multiple subdomains. Currently supports advertising IPv4 and IPv6 routes over IPv4 sessions.
Fixed issue in which new MAC addresses of re-imaged nodes weren't updated.
Observability:
GA: Enabled collection of multiple network interfaces (multinic) logs from clusters. Logs are collected as system logs and are sent to Cloud Logging without charge to the customer.
Preview: Added Summary API metrics. These metrics provide CPU, memory, and storage statistics about pods, containers, and nodes.
Updated fluent-bit (
stackdriver-log-forwarder
) cri parser to avoid matching time fields multiple times.Upgraded
kube-state-metrics
from version 1.9 to 2.4. This service generates metrics about Kubernetes API objects such as deployments, nodes, and pods.Upgraded Metric Server from version 0.3.6 to 0.4.5. Metrics Server retrieves metrics from kubelets and exposes them through the Kubernetes Metrics API.
Security:
Preview: Added secure computing mode (
seccomp
) support. Running containers with aseccomp
profile improves the security of a cluster because it restricts the system calls that containers are allowed to make to the kernel.Added ability to disable rootless mode for system containers. Since version 1.10.0, Kubernetes control planes and Anthos clusters on bare metal system containers run as non-root containers by default.
Fixed CA rotation issues by increasing the
ca-rotation
timeout for admin clusters. While verifying that a static pod has been restarted after manifest update, the current hash is retrieved before the manifest changes are applied.
Known issues:
Deprecated metrics
Several Anthos metrics have been deprecated and, starting with this release, data is no longer collected for these deprecated metrics. If you use these metrics in any of your alerting policies, there won't be any data to trigger the alerting condition. For more information, including instructions to migrate to updated replacement metrics, see Deprecated metrics affects Cloud Monitoring dashboard in Known Issues.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
Release 1.10.3
Anthos clusters on bare metal 1.10.3 is now available for download. To upgrade, see Upgrade Anthos on bare metal. Anthos clusters on bare metal 1.10.3 runs on Kubernetes 1.21.
Fixes:
- The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
March 23, 2022
Release 1.9.6
Anthos clusters on bare metal 1.9.6 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.9.6 runs on Kubernetes 1.21.
Fixes:
- The following container image security vulnerabilities have been fixed:
- CVE-2021-43824
- CVE-2021-43825
- CVE-2021-43826
- CVE-2021-21654
- CVE-2021-21655
- CVE-2021-23606
- CVE-2021-21657
- CVE-2021-21656
- CVE-2021-23635
- CVE-2022-23648
- CVE-2021-45960
- CVE-2021-3996
- CVE-2021-3995
- CVE-2021-45960
- CVE-2022-22823
- CVE-2022-22824
- CVE-2022-22822
- CVE-2022-23852
- CVE-2022-23990
- CVE-2021-43618
- CVE-2022-22825
- CVE-2022-22827
- CVE-2021-46143
- CVE-2022-22826
Known issues:
When you upgrade Anthos clusters on bare metal from a version with a security patch to the next minor release, we recommend that you upgrade to the highest patch version to ensure that you have the latest security fixes. Always review the release notes before upgrading so that you're aware of what has changed, including security fixes and known issues. Upgrading to a lower release version isn't supported.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
March 14, 2022
Release 1.8.9
Anthos clusters on bare metal 1.8.9 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.8.9 runs on Kubernetes 1.20.
Fixes:
- The following container image security vulnerabilities have been fixed:
Known issues:
When upgrading Anthos clusters on bare metal from a version with a security patch to the next minor release, we recommend that you upgrade to the highest patch version to ensure that you have the latest security fixes. Always review the release notes before upgrading so that you're aware of what has changed, including security fixes and known issues. Upgrading to a lower release version isn't supported.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
February 28, 2022
Release 1.9.5
Anthos clusters on bare metal 1.9.5 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.9.5 runs on Kubernetes 1.21.
Fixes:
- The following container image security vulnerabilities have been fixed:
Known issues:
When you upgrade Anthos clusters on bare metal from a version with a security patch to the next minor release, we recommend that you upgrade to the highest patch version to ensure that you have the latest security fixes. Always review the release notes before upgrading so that you're aware of what has changed, including security fixes and known issues. Upgrading to a lower release version isn't supported.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
February 25, 2022
Release 1.10.2
Anthos clusters on bare metal 1.10.2 is now available for download. To upgrade, see Upgrade Anthos on bare metal. Anthos clusters on bare metal 1.10.2 runs on Kubernetes 1.21.
Functionality changes:
A preflight check now verifies whether your node machine has enough disk space before starting an install.
Updated the
bmctl check cluster --snapshot
command so that snapshots now capture information about pods in cluster namespaces.Updated the
bmctl check cluster --snapshot
command so that snapshots now capture information about cluster API machines andkubeadmin
Secrets.
Fixes:
Fixed issue in which the edge profile's request to reserve resources is lost during the upgrade process.
Fixed
bmctl upgrade
command so that the log fileupgrade-cluster.log
is generated in thebmctl-workspace/cluster/logs
directory.Fixed issue in which the non-root login didn't have the proper permissions to perform
bmctl backup
orbmctl restore
.Fixed a Node Problem Detector service that sometimes failed to run on nodes after a cluster installation or upgrade.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
Security bulletin (1.8, 1.9, and 1.10)
Envoy recently released multiple security vulnerability fixes. The vulnerabilities affect Anthos clusters on bare metal, because Envoy is used for Metrics Server.
For instructions and more details, see the GCP-2022-008 security bulletin.
February 04, 2022
Security bulletin (all minor versions)
A security vulnerability, CVE-2021-4034, has been discovered in pkexec
, a part of the Linux policy kit package (polkit), that allows an authenticated user to perform a privilege escalation attack. PolicyKit is generally used only on Linux desktop systems to allow non-root users to perform actions, such as rebooting the system, installing packages, restarting services, as governed by a policy.
For instructions and more details, see the GCP-2022-004 security bulletin.
February 01, 2022
Release 1.8.8
Anthos clusters on bare metal 1.8.8 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.8.8 runs on Kubernetes 1.20.
Fixes:
- The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
January 27, 2022
Release 1.9.4
Anthos clusters on bare metal 1.9.4 is now available for download. To upgrade, see Upgrade Anthos on bare metal. Anthos clusters on bare metal 1.9.4 runs on Kubernetes 1.21.
Fixes:
- The following container image security vulnerabilities have been fixed:
Known issues:
When you upgrade Anthos clusters on bare metal from a version with a security patch to the next minor release, we recommend you upgrade to the highest patch version to ensure you have the latest security fixes. Always review the release notes before upgrading so you're aware of what has changed, including security fixes and known issues. Upgrading to a lower release version isn't supported.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
Release 1.10.1
Anthos clusters on bare metal 1.10.1 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.10.1 runs on Kubernetes 1.21.
Fixes:
Fixed PreflightCheck to allow the
preflightCheck.Spec.ConfigYAML
field to be empty.Fixed PreflightCheck to allow an existing GKE Hub membership, if the cluster already exists.
Fixed issue that blocked access to external Virtual IP addresses of Services, such as a Load Balancer, when Flat IPv4 is enabled.
Fixed issue in which the use of
–nodes/
and–node-ssh-key
flags when taking an admin-less snapshot of a cluster resulted in an empty snapshot.Fixed issue that caused installation of version 1.10.0 clusters to fail when the
umask
setting for theroot
user on the target machine wasn't0022
. For more information, see Failure on systems with restrictive umask setting.Fixed issue in which BGP load balancer preflight checks failed if the Kubernetes interface had a period ('.') in the name. (For example, VLAN interfaces often have names such as
eth0.1
).The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
December 22, 2021
Release 1.9.3
Anthos clusters on bare metal 1.9.3 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.9.3 runs on Kubernetes 1.21.
Fixes:
Fixed an issue in which cluster creation fails if a cluster has more than one control plane node, and the
HTTPS_PROXY
environment variable has been defined on one or more of the control plane nodes.Upgraded Kubernetes version from 1.21.4 to 1.21.5 to address an error in which pods become stuck in the
ContainerCreating
state becauselibcontainer
mistakenly throws a "unit already exists" error.The following container image security vulnerability has been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
December 14, 2021
Release 1.8.7
Anthos clusters on bare metal 1.8.7 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.8.7 runs on Kubernetes 1.20.
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
December 10, 2021
Release 1.10.0
Anthos clusters on bare metal 1.10.0 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.10.0 runs on Kubernetes 1.21.
Improved cluster lifecycle functionalities:
GA: Enabled Node Problem Detector to run by default on all nodes. You can check if a problem was detected on a node by running the
kubectl describe
command for the node. Then look forNodeConditions
orEvents
reported by Node Problem Detector.GA: Added
bmctl backup cluster
andbmctl restore cluster
commands to facilitate disaster recovery for clusters.Preview: Added the ability to reset individual nodes using the SSH key.
Updated the
bmctl check cluster
command so that the snapshot of a cluster includes the cluster's YAML file and logs that are in thebmctl-workspace
directory.Added a new status field
cluster.gkeHubRegistrationStatus
. The commandkubectl get cluster
now shows information about the cluster's membership to GKE Hub.
Networking:
Preview: Enabled Anthos multi-cluster connectivity to provide Anthos clusters a way to connect to another Anthos cluster in the same data center (intra-site, cluster-to-cluster). Pods in connected clusters can reach each other over pod IP addresses without using native address translation (NAT) in between.
Preview: Enabled IPv4/IPv6 dual stack support. Customers can deploy clusters in a dual-stack network, where IPv4 and IPv6 addresses can be assigned to both nodes and pods.
Preview: Enabled "flat mode" (a simplified network topology) for IPv4 , where the pod's IPv4 address is visible and routable without masquerading as node IP within the same Layer 2 domain.
Preview: Enabled SR-IOV. This feature lets you configure Virtual Functions (VFs) on the supported devices on the nodes of their cluster. This feature also lets you define the kernel module you want to bind to the VF.
Observability:
GA: Added ability to show severity level of an issue in Cloud Logging. Severity level is extracted from
containerd
andkubelet
node logs.GA: Changed collection of application metrics to use a more scalable monitoring pipeline based on OpenTelemetry. This change significantly reduces the amount of resources required to collect metrics.
Security:
GA: Enhanced the capability to rotate cluster certificate authorities (CAs). Updates include support for all cluster types, rotation of front-proxy and
etcd
CAs, and changes to thebmctl
command syntax.Preview: Enabled installation of Anthos clusters on bare metal using a short-lived Google Service Account token instead of using Google Service Account keys.
Enabled Kubernetes control plane and most Anthos system containers to run as non-root users. For details, see Don't run containers as root user.
VM Runtime:
Preview: Supported enabling or disabling Anthos VM Runtime on user clusters.
Preview: Enabled Anthos VM Runtime to support QEMU Copy On Write (QCOW2) format, which is a storage format for virtual disks on virtual machines. Some benefits of virtual disk capabilities are independent thin provisioning, better compression, and encryption at rest.
Preview: Enabled
VMRuntime
custom resource and theNetwork
custom resource, which let you create VMs on either the node network with a static IP address or the default pod network.Preview: Enabled VM pods audit logs for VM runtime resources.
Preview: Expanded guest OS versions that can run on the virtual machine. We support Windows Server 2019, 2016, Windows 10, Red Hat Enterprise Linux (RHEL) 8, Centos 8, and Ubuntu 20.04 as guest OS.
Preview: Enabled virtual machine high availability to provide greater uptime for virtual machines instances (VMIs) by automatically detecting and recovering from a range of host machine failures.
Breaking changes:
The gateway capability used by the egress NAT gateway and Bundled load balancing with BGP Preview features have changed in this release. The NetworkGatewayGroup
custom resource replaces AnthosNetworkGateway
and the capability is enabled with a new advancedNetworking
field in the cluster configuration file, instead of an annotation. These changes affect the ability to upgrade clusters that use earlier versions of the features.
Anthos clusters on bare metal blocks cluster upgrades from version 1.9 to version 1.10 for clusters that use either of these two advanced networking features. You can upgrade a version 1.9 admin cluster that is managing 1.9 user clusters that use these features to version 1.10, but object reconciliation breaks for the AnthosNetworkGateway
custom resource. Object reconciliation is the mechanism whereby admin clusters automatically copy/restore objects on managed user clusters when the objects have been defined alongside the cluster configuration. Any AnthosNetworkGateway
custom resources are still functional and can be modified with kubectl
.
To bring a version 1.9 cluster that uses either advanced networking Preview feature up to version 1.10, reset or delete the cluster and create a new 1.10 cluster.
Preview features and products are subject to change and are provided for testing and evaluation purposes only. Do not use Preview features on your production clusters.
Functionality changes:
Enabled use of
ADMIN_KUBECONFIG
environment variable to reduce the number ofbmctl
command flags.The cluster reconciliation process now checks for differences in the GKEHub membership before attempting to update it. If the GKEHub membership needs to be changed, the cluster is unregistered and then re-registered.
The
advancedNetworking
field in the cluster configuration file replaces the deprecatedbaremetal.cluster.gke.io/enable-anthos-network-gateway
annotation for enabling advanced networking capabilities.The
NetworkGatewayGroup
custom resource replaces theAnthosNetworkGateway
custom resource.
Fixed cluster lifecycle functionalities:
Outputs from all
bmctl
commands exceptbmctl version
are now written to log files.Fixed strict mode for decoding the cluster YAML file. Extraneous information in the cluster YAML file now results in an error.
Fixed preflight check so that it no longer ignores the
no_proxy
setting.Binaries in cluster provision no longer run from
/tmp
, which is often mounted withnoexec
options. This change fixes a preflight check "permission denied" error.Switched the default server-side
containerRuntime
value fromdocker
tocontainerd
.
Observability:
Increased the priority of the
kube-state-metrics
service to keep it from being stuck in a pending state. This service generates metrics about Kubernetes API objects such as deployments, nodes, and pods.Upgraded metrics-server to version 0.3.6 to fix a missing metrics issue that occurs when a duplicated pod name is present.
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
December 09, 2021
Release 1.7.7
Anthos clusters on bare metal 1.7.7 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.7.7 runs on Kubernetes 1.19.
Fixes:
The 1.7.6 release has a known issue that blocks upgrades of 1.7.5 clusters. The 1.7.7 release allows you to upgrade from all earlier versions to get the latest security fixes.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
November 29, 2021
Release 1.8.6
Anthos clusters on bare metal 1.8.6 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.8.6 runs on Kubernetes 1.20.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
November 15, 2021
Release 1.7.6
Anthos clusters on bare metal 1.7.6 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.7.6 runs on Kubernetes 1.19.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
When you upgrade Anthos clusters on bare metal from a version with a security patch to the next minor release, we recommend you upgrade to the highest patch version to ensure you have the latest security fixes. Always review the release notes before upgrading so you're aware of what has changed, including security fixes and known issues. Upgrading to a lower release version isn't supported.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
Release 1.9.2
Anthos clusters on bare metal 1.9.2 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.9.2 runs on Kubernetes 1.21.
Fixes:
Updated preflight checks to use strict mode for decoding YAML to catch issues with indentation and misplaced fields in the cluster configuration file.
Fixed an issue that caused
containerRuntime
to default todocker
, instead ofcontainerd
in certain uncommon situations.Fixed an issue where
node_filesystem
metrics report incorrect size in Cloud Monitoring for mount-points other than root.Fixed an issue that caused communication failures between Cloud Logging metadata agent and the Cloud Monitoring API when the root certificate authority (CA) on the host node isn't set up properly.
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
October 29, 2021
Security bulletin (all minor versions)
The security community recently disclosed a new security vulnerability CVE-2021-30465 found in runc
that has the potential to allow full access to a node filesystem.
For more information, see the GCP-2021-011 security bulletin.
October 26, 2021
Release 1.9.1
Anthos clusters on bare metal 1.9.1 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.9.1 runs on Kubernetes 1.21.
Fixes:
Fixed
bmctl
to eliminate stack trace from error output.The following container image security vulnerabilities have been fixed:
Functionality changes:
- Updated the
bmctl reset cluster
command to prevent you from resetting an admin cluster if the admin cluster is managing user clusters. - Updated the
bmctl create cluster
command to block you from enabling the Anthos VM Runtime for admin clusters.
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
October 21, 2021
Release 1.8.5
Anthos clusters on bare metal 1.8.5 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.8.5 runs on Kubernetes 1.20.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
Security bulletin (all minor versions)
A security issue was discovered in the Kubernetes ingress-nginx controller, CVE-2021-25742. Ingress-nginx custom snippets allows retrieval of ingress-nginx service account tokens and secrets across all namespaces. For more information, see the GCP-2021-024 security bulletin.
October 19, 2021
Release 1.7.5
Anthos clusters on bare metal 1.7.5 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.7.5 runs on Kubernetes 1.19.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
When you upgrade Anthos clusters on bare metal from a version with a security patch to the next minor release, we recommend you upgrade to the highest patch version to ensure you have the latest security fixes. Always review the release notes before upgrading so you're aware of what has changed, including security fixes and known issues. Upgrading to a lower release version isn't supported.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
October 04, 2021
Security bulletin (all minor versions)
A security vulnerability, CVE-2020-8561,
has been discovered in Kubernetes where certain webhooks can be made to
redirect kube-apiserver
requests to private networks of that API
server.
For more information, see the GCP-2021-021 security bulletin.
September 28, 2021
Release 1.9.0
Anthos clusters on bare metal 1.9.0 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.9.0 runs on Kubernetes 1.21.
Improved cluster lifecycle functionalities:
Preview: Added ability to reset individual nodes with the
bmctl reset node
command. To give access to the needed cluster configuration file, use the command with the-c
flag.Preview: Added ability to recover from HA control plane quorum loss with
bmctl restore --control-plane-node
command.Added
bmctl create ksa
command to create a Kubernetes Service Account (KSA) and generate a bearer token. To log in to the registered cluster, you can use the token in Cloud Console Kubernetes Engine > Clusters.Preview: Added
bmctl backup cluster
andbmctl restore cluster
commands to facilitate disaster recovery for clusters.
Introduced new troubleshooting capabilities:
Updated the
bmctl check cluster --snapshot
command to support uploading cluster diagnostic snapshots to a Cloud Storage bucket for review by Cloud Customer Care.Provided access to bootstrap cluster logs to help troubleshoot cluster creation or upgrade problems.
Preview: Added support for Node Problem Detector service on nodes for quick detection of common node problems.
Enhanced monitoring and logging:
GA: Cloud Audit Logs capability is now generally available and enabled by default. Audit logs are useful for investigating suspicious API requests and for collecting statistics. For more information, see Use Audit Logging.
Switched to new open telemetry-based metrics agents to improve reliability, ability to scale, and resource usage.
Improved networking capabilities:
GA: The multi-NIC capability to provide additional interfaces to your pods is now generally available.
Preview: Added the single root I/O virtualization (SR-IOV) container network interface (CNI) plugin for multi-NIC.
Added support to configure cluster Domain Name System (DNS) provider options, such as upstream nameservers, with the new
ClusterDNS
custom resource definition.
Enhanced security:
SELinux is now always enabled in the container runtime for CentOS and RHEL.
Preview: Enhanced the capability to rotate cluster certificate authorities (CAs). Updates include support for all cluster types, rotation of front-proxy and etcd CAs, and changes to the
bmctl
command syntax.Preview: Added Okta group support for authentication in Anthos Identity Service.
Functionality changes:
- Changed default container runtime to containerd,
containerRuntime: containerd
for new clusters. Customers can still choose Docker as the container runtime. Preview: Updated
bmctl
command,bmctl reset nodes --force
, to support force removal of control plane nodes with etcd membership cleanup.Added checks for cluster updates to verify access to cluster machines if changes to
loginUser
orsshKeyPrivatePath
are detected. If the checks pass, Anthos clusters on bare metal saves the secret in the cluster.Added new Anthos cluster control plane uptime dashboard in Cloud Monitoring with new metric
kubernetes.io/anthos/container/uptime
for component availability.Added new alerts for control plane components availability with new metric
kubernetes.io/anthos/container/uptime
to replace deprecated alerts with metrickubernetes.io/anthos/up
.
Fixes:
Added missing registry mirror package required for Cloud Audit Logs to the Registry Mirror.
Fixed issue with containerd not finding
crictl
due to/usr/local/bin
not being in the SSH user's PATH.Fixed flapping node readiness issues caused by an unhealthy Pod Lifecycle Event Generator (PLEG).
Fixed kernel support issue for Ubuntu 18.04 and 18.04.1 that prevented the
anetd
networking controller from working properly. Anthos clusters on bare metal release 1.9.0 works with all kernels supplied with supported distributions.
Known issues:
Control group v2 (cgroup v2) is not officially supported in Anthos clusters on bare metal release 1.9.0 and later. The presence of
/sys/fs/cgroup/cgroup.controllers
indicates that your system uses cgroup v2.Anthos Service Mesh v1.10 is incompatible with Anthos clusters on bare metal release 1.9.0 running on Red Hat Enterprise Linux (RHEL) when SELinux is enabled. If you want to use Anthos Service Mesh, you must disable SELinux or set it to permissive mode on the host.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
September 21, 2021
Release 1.8.4
Anthos clusters on bare metal 1.8.4 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.8.4 runs on Kubernetes 1.20.
Fixes:
The following container image security vulnerabilities have been fixed: - CVE-2021-3711 - CVE-2021-3712 - CVE-2021-20305 - CVE-2021-33560
Known issues:
When you upgrade Anthos clusters on bare metal from a version with a security patch to the next minor release, we recommend you upgrade to the highest patch version to ensure you have the latest security fixes. Always review the release notes before upgrading so you're aware of what has changed, including security fixes and known issues. Upgrading to a lower release version isn't supported.
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
September 20, 2021
Release 1.7.4
Anthos clusters on bare metal release 1.7.4 is now available for download. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.7.4 runs on Kubernetes 1.19.
Fixes:
Fixed vulnerability CVE-2021-25741 that might allow users to create a container with subpath volume mounts to access files and directories outside of the volume, including on the host filesystem. This vulnerability affects all clusters created or upgraded with Anthos clusters on bare metal release 1.7.0. For more information, see the GCP-2021-018 security bulletin.
Updated the Kubernetes patch version to address the following container image security vulnerabilities:
Known issues:
When you upgrade Anthos clusters on bare metal from a version with a security patch to the next minor release, we recommend you upgrade to the highest patch version to ensure you have the latest security fixes. Always review the release notes before upgrading so you're aware of what has changed, including security fixes and known issues. Upgrading to a lower release version isn't supported.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
Security bulletin (1.7 and 1.8)
A security issue was discovered in Kubernetes, CVE-2021-25741, where a user may be able to create a container with subpath volume mounts to access files and directories outside of the volume, including on the host filesystem. This vulnerability affects all clusters created or upgraded with Anthos clusters on bare metal 1.7.x and 1.8.x releases, specifically 1.7.3 and earlier and 1.8.2 and earlier.
To fix this vulnerability, upgrade your Anthos clusters to version 1.7.4 or 1.8.3. For more information, see the GCP-2021-018 security bulletin.
August 27, 2021
Release 1.8.3
Anthos clusters on bare metal 1.8.3 is now available. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.8.3 runs on Kubernetes 1.20.
Breaking changes:
In Anthos clusters on bare metal release 1.8.0, we added a kernel version requirement for Ubuntu 18.04. We required a Linux kernel version of 4.17.0 or later. Anthos clusters on bare metal release 1.8.3 again supports all Linux kernel versions that ship with Ubuntu 18.04 and 20.04 distributions. As a result of this change, however, the egress NAT gateway feature that was provided for Preview in release 1.8.0 does not work with Anthos clusters on bare metal release 1.8.3.
Features:
Preview: Anthos Identity Service now works with Anthos clusters on bare metal to support LDAP authentication methods in addition to OIDC. You can use AIS with Microsoft Active Directory without the need for provisioning Active Directory Federation Services. For more information, see Setting up Anthos Identity Service with LDAP.
Preview: Anthos Metadata Agent replaces Stackdriver Metadata Collector and collects more accurate and usable metadata for Kubernetes resources. When you configure logging and monitoring, you need to enable the Config Monitoring for Ops API and grant the
opsconfigmonitoring.resourceMetadata.writer
IAM role to your logging-monitoring service account. If Anthos clusters on bare metal is installed behind a proxy, your proxy server must also allow connections toopsconfigmonitoring.googleapis.com
.Added preflight checks to verify that specific APIs are enabled for your Google Cloud project. Preflight checks return an error if any of the following APIs aren't enabled for your project:
anthos.googleapis.com
anthosaudit.googleapis.com
anthosgke.googleapis.com
cloudresourcemanager.googleapis.com
gkeconnect.googleapis.com
gkehub.googleapis.com
iam.googleapis.com
opsconfigmonitoring.googleapis.com
logging.googleapis.com
monitoring.googleapis.com
stackdriver.googleapis.com
To enable these APIs when you create a cluster configuration file, use the
--enable-apis
flag with thebmctl create config
command. For an example that uses the--enable-apis
flag, see Create an admin cluster config with bmctl.Added preflight checks for the following machine requirements:
- Minimum supported Linux kernel version
- Minimum required CPU
- Minimum required RAM
Fixes:
- Fixed the following container image security vulnerabilities:
- Fixed cluster creation and cluster update failures for nodes running CentOS or Red Hat Enterprise Linux (RHEL) with both SELinux and Cloud Audit Logs enabled.
- Fixed Transmission Control Protocol (TCP) connection leakage issue.
- Fixed an issue that prevented cert-manager from issuing ACME certificates over HTTP due to
ImagePullBackOff
errors.
Changes:
- The Kubevirt version used for working with VM-based workloads is now v0.43.0-gke.3.
- The bootstrap cluster is deleted when a cluster upgrade completes without errors.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
August 16, 2021
Release 1.7.3
Anthos clusters on bare metal 1.7.3 is now available. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.7.3 runs on Kubernetes 1.19.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
When you upgrade Anthos clusters on bare metal from a version with a security patch to the next minor release, we recommend you upgrade to the highest patch version to ensure you have the latest security fixes. Always review the release notes before upgrading so you're aware of what has changed, including security fixes and known issues. Upgrading to a lower release version isn't supported.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
August 13, 2021
Release 1.6.4
Anthos clusters on bare metal 1.6.4 is now available. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.6.4 runs on Kubernetes 1.18.
Fixes:
The following container image security vulnerabilities have been fixed:
Known issues:
When you upgrade Anthos clusters on bare metal from a version with a security patch to the next minor release, we recommend you upgrade to the highest patch version to ensure you have the latest security fixes. Always review the release notes before upgrading so you're aware of what has changed, including security fixes and known issues. Upgrading to a lower release version isn't supported.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
July 29, 2021
Release 1.8.2
Anthos clusters on bare metal 1.8.2 is now available. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.8.2 runs on Kubernetes 1.20.
Features:
Preview: Added capability to rotate cluster certificate authorities (CAs) for user clusters. For instructions on using the
bmctl cluster credentials
command to rotate cluster CAs, see Rotate user cluster certificate authority.Preview: Added support for AppArmor with Anthos clusters on bare metal. You don't need to disable AppArmor on Ubuntu as a prerequisite for installation. When you create new 1.8.2 clusters or upgrade clusters to version 1.8.2, you can enable AppArmor either before or after you upgrade.
Fixes:
Fixed CVE-2021-3520 vulnerability related to a flaw in lz4, which provides support for LZ4 a lossless compression algorithm. The flaw impacts availability, but has potential to impact confidentiality and integrity as well.
Fixed
bmctl
operation failures that occur for some Ubuntu 20.04 LTS distributions with a more recent Linux kernel, including Ubuntu 20.04 LTS images on the 5.8 kernel. For more information about this issue and a workaround, see Ubuntu 20.04 LTS and bmctl.Fixed OpenStack support for user clusters. In prior releases, cluster creation fails for user type clusters when the
baremetal.cluster.gke.io/external-cloud-provider: "true"
annotation is added to the cluster configuration file.Fixed PATH environment issues for executing commands as a non-root user. For more information, see Known Issues.
Fixed an issue that caused user cluster resets (
bmctl reset cluster
) to get stuck while deleting namespaces.Fixed out-of-memory (OOM) conditions related to Connect Agent memory usage that resulted in pod failures.
Fixed issue that blocked snapshots for clusters configured for passwordless
SUDO
capability for machine login (nodeAccess.loginUser: <login user name>
).Fixed issue that blocked some 1.7.x version admin, hybrid, or standalone clusters from upgrading to the 1.8 minor release. This issue affected some clusters that were updated by applying changes from an updated cluster configuration file.
Fixed Address Resolution Protocol (ARP) table issue for high-availability (HA) deployments that blocked upgrades from completing.
Functionality changes:
- Expanded snapshots to include resource usage metrics to improve troubleshooting and support. Added metrics include the output of
ip neigh
,kubectl top nodes
, andkubectl top pods
commands.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
July 02, 2021
Release 1.8.1
Anthos clusters on bare metal release 1.8.1 is now available. To upgrade, see Upgrading Anthos on bare metal. Anthos on bare metal 1.8.1 runs on Kubernetes 1.20.
Fixes:
Fixed CVE-2021-34824 that could expose private keys and certificates from Kubernetes secrets through the credentialName
field when using Gateway
or DestinationRule
. This vulnerability affects all clusters created or upgraded with Anthos clusters on bare metal release 1.8.0. For more information, see the GCP-2021-012 security bulletin.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
June 30, 2021
Security bulletin (1.8)
The Istio project recently announced a security vulnerability (CVE-2021-34824) where credentials specified in the credentialName
field for Gateway
or DestinationRule
can be accessed from different namespaces. This vulnerability affects all clusters created or upgraded with Anthos clusters on bare metal release 1.8.0. For more information, see the GCP-2021-012 security bulletin.
June 21, 2021
Release 1.8.0
Anthos clusters on bare metal release 1.8.0 is now available. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.8.0 runs on Kubernetes 1.20.
Extended installation support:
- Provided support to use containerd as the container runtime as GA for Anthos clusters on bare metal release 1.8.0. Cluster upgrades to 1.8.0 are blocked for 1.7.x clusters that are configured to use the preview containerd capability. For more information, see Upgrading 1.7.x clusters that use containerd in Known Issues.
- Preview: Improved virtual machine (VM) management capability. Anthos VM Runtime uses KubeVirt to orchestrate VMs on clusters, allowing you to work with your VM-based apps and workloads in a uniform development environment. Anthos VM Runtime has worked with Anthos clusters on bare metal as a preview feature since November 2020 and we have continued to enhance its capability. For more information, see Working with VM-based workloads.
- Added edge profile support for standalone clusters. The edge profile is recommended for edge devices with limited resources. Add
profile: edge
to the cluster config file when you create a standalone cluster to produce a cluster that has significantly reduced system resource requirements. The edge profile is only available for standalone clusters, it is ignored for other cluster types. For more information, see Creating standalone clusters. - Added support to specify provider ID for Nodes (
controlPlane.nodePoolSpec.nodes.providerID
) to support deploying on OpenStack using Load Balancing as a Service (LBaaS) resources. For more information, see Configure your clusters to use OpenStack. - Preview: Added support for installing Anthos clusters on bare metal, using your own registry service, instead of
gcr.io
. For instructions and additional information, see Installing Anthos Bare Metal using registry mirror.
Improved upgrade:
- Enabled support for upgrading non-SELinux clusters to SELinux. For more information, see Enable SELinux in Upgrading Anthos clusters on bare metal.
- Cluster upgrades are not blocked by excessive Node draining durations. During a cluster upgrade, if the draining process takes longer than 20 minutes for any specific Node, the upgrade process will carry on without waiting for draining to complete.
Updated user cluster lifecycle management:
- Added
bmctl
improvements for resetting user cluster and adding additional preflight checks to confirm machine and network readiness for cluster creation:
Enhanced monitoring and logging:
- Preview: Added Cloud Audit Logging capability, which enables audit logs to be written to Cloud Audit Logs in your Google project. Audit logs are useful for investigating suspicious API requests and for collecting statistics. For more information, see Enable Audit Logging.
Introduced new networking capabilities in preview:
- Preview: Added multi-NIC capability to provide additional interfaces to your Pods.
- Preview: Added egress NAT gateway capability to provide persistent, deterministic routing for the egress traffic from your clusters. For more information, see Configure an egress NAT gateway for external communication.
- Preview: Added option for BGP bundled load balancer for Layer-3 (L3) topologies. This feature can be used with user clusters and admin clusters.
Enhanced security:
- Workload Identity is GA. The Connect Agent Service Account Key is no longer required during installation. Connect Agent uses Workload Identity to authenticate to Google Cloud instead of an exported Google Cloud Service Account Key.
Expanded support for newer versions of operating systems:
- Added support for installing Anthos clusters on bare metal on Red Hat Enterprise Linux (RHEL) 8.4, and CentOS 8.4
Functionality changes:
- Added
--workspace-dir
flag tobmctl
to allow changing the path and name of the workspace directory from the defaultbmctl-workspace
. The workspace directory contains the configuration and log files generated bybmctl
. When using thebmctl
command, pass in a--workspace-dir
flag to specify a non-default workspace directory location. If the directory does not exist,bmctl
will create it for you. - Moved away from
iptables
-based NodePort and masquerade handling to eBPF-based management. NodePort and masquerade handling are now applied to the Node IP and default gateway interfaces only.
Fixes:
- Resolved, as part of the GA support for using containerd as the container runtime, incorrect cgroup driver use. Newly created 1.8.0 clusters that are configured to use containerd will use the correct
systemd
cgroup driver. - Fixed issue that prevented usage metrics for the containerd process from being collected by Cloud Logging. This fix applies to newly created 1.8.0 clusters only.
Known issues:
- If a Node is out of reach, Anthos clusters on bare metal can't start the draining process, which may impact the cluster upgrade process. For more information, see Node draining can't start when Node is out of reach.
- Upgrading from 1.7.x clusters that use containerd as the container runtime to 1.8.0 is blocked. For more information, see Upgrading 1.7.x clusters that use containerd.
- When running Anthos clusters on bare metal with firewalld enabled on either CentOS or Red Hat Enterprise Linux (RHEL), changes to firewalld can remove the Cilium
iptables
chains on the host network. The loss of the Cilium iptables chains causes the Pod on the Node to lose network connectivity outside of the Node. for more information, see Modifying firewalld will erase Ciliumiptable
chains.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
June 02, 2021
Release 1.7.2
Anthos clusters on bare metal release 1.7.2 is now available. To upgrade, see Upgrading Anthos on bare metal. Anthos clusters on bare metal 1.7.2 runs on Kubernetes 1.19.
Fixes:
- Fixed CVE-2021-25735 that could allow node updates to bypass a Validating Admission Webhook. For more details, open the Anthos clusters on bare metal tab of the GCP-2021-003 security bulletin.
- Resolved the
bmctl snapshot
command failure when the user creates a custom cluster namespace omitting "cluster-" prefix from the cluster config file. The prefix is no longer required for a custom cluster namespace. - Added webhook blocks to prevent users from modifying control plane node pool and load balancer node pool resources directly. Control plane and load balancer node pools for Anthos clusters on bare metal are specified in the cluster resource, using the
spec.controlPlane.nodePoolSpec
andspec.LoadBalancer.nodePoolSpec
sections of the cluster config file respectively. - Fixed the cluster upgrade command,
bmctl upgrade cluster
, to prevent it from interfering with user-installed Anthos Service Mesh (ASM).
Functionality changes:
- Updated the
bmctl check snapshot
command so that it includes certificate signing requests in the snapshot. - Changed the upgrade process to prevent node drain issues from blocking upgrades. The upgrade process triggers a node drain. Now, if the node drain takes longer than 20 minutes, the upgrade process carries on to completion even when the draining hasn't completed. In this case, the upgrade output reports the incomplete node drain. Excessive drain times signal a problematic with pods. You may need to restart problem pods.
- Updated cluster creation process,
bmctl create cluster
, to display logged errors directly on the command line. Prior to this release, detailed error messages were only available in the log files.
Known issues:
- Node logs from nodes with a dot (".") in their name are not exported to Cloud Logging. For workaround instructions, see Node logs aren't exported to Cloud Logging in Anthos clusters on bare metal known issues.
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
May 17, 2021
Release 1.6.3
Anthos clusters on bare metal release 1.6.3 is now available. To upgrade, see Upgrading Anthos clusters on bare metal. Anthos clusters on bare metal 1.6.3 runs on Kubernetes 1.18.
Fixed:
- Fixed CVE-2021-25735 that could allow node updates to bypass a Validating Admission Webhook. For more details, open the Anthos clusters on bare metal tab of the GCP-2021-003 security bulletin.
- Fixed CVE-2021-28683, CVE-2021-28682, and CVE-2021-29258. For more details, open the Anthos clusters on bare metal tab of the GCP-2021-004 security bulletin.
Known issues:
When you upgrade Anthos clusters on bare metal from a version with a security patch to the next minor release, we recommend you upgrade to the highest patch version to ensure you have the latest security fixes. Always review the release notes before upgrading so you're aware of what has changed, including security fixes and known issues. Upgrading to a lower release version isn't supported.
For information about the latest known issues, see Anthos clusters on bare metal known issues in the Troubleshooting section.
May 06, 2021
Security bulletin (1.6 and 1.7)
The Envoy and Istio projects recently announced several new security vulnerabilities (CVE-2021-28683, CVE-2021-28682, and CVE-2021-29258) that could allow an attacker to crash Envoy.
For more information, see the GCP-2021-004 security bulletin.
April 30, 2021
Release 1.7.1
Anthos clusters on bare metal release 1.7.1 is now available. To upgrade, see Upgrading Anthos clusters on bare metal. Anthos clusters on bare metal 1.7.1 runs on Kubernetes 1.19.
Functionality changes:
- Customers can now take cluster snapshots regardless of whether the admin cluster control plane is running. This is helpful for diagnosing installation issues.
- Deploying Anthos clusters on bare metal with SELinux is now fully supported on supported versions of Redhat Enterprise Linux. This applies for new installations of Anthos clusters on bare metal cases only.
- User cluster creation with
bmctl
supports credential inheritance from the admin cluster by default. Credential overrides for the user cluster can be specified in the config file during cluster creation.
Fixes:
- (Updated May 12, 2021) Fixed CVE-2021-28683, CVE-2021-28682, CVE-2021-29258. For more details, see the GCP-2021-004 security bulletin.
- Fixed potential stuck upgrade from 1.6.x to 1.7.0. The bug was caused by a rare race condition when the coredns configmap failed to be backed up and restored during the upgrade.
- Fixed potential missing GKE connect agent during installation due to a rare race condition.
- Fixed issue that prevented automatic updates to the control plane load balancer config when adding/removing node(s) from the control plane node pool.
- Addressed problem with syncing NodePool taints and labels that resulted in deletion of pre-existing items. Syncs will now append, update, or delete items that are added by taints and labels themselves only.
Known issues:
- Upgrading the container runtime from containerd to Docker will fail in Anthos clusters on bare metal release 1.7.1. This operation is not supported while the containerd runtime option is in preview.
bmctl snapshot
command fails when the user creates a custom cluster namespace omittingcluster-
prefix from the cluster config file. To avoid this issue, the cluster namespace should follow thecluster-$CLUSTER_NAME
naming convention.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
April 20, 2021
Security bulletin (1.6 and 1.7)
The Kubernetes project recently announced a new security vulnerability, CVE-2021-25735, that could allow node updates to bypass a Validating Admission Webhook. For more details, see the GCP-2021-003 security bulletin.
March 25, 2021
Release 1.7.0
Anthos clusters on bare metal release 1.7.0 is now available. To upgrade, see Upgrading Anthos on bare metal. Anthos on bare metal 1.7.0 runs on Kubernetes 1.19.
Extended installation support:
Added requirement for Anthos clusters on bare metal connectivity with Google Cloud for install and upgrade operations. As of 1.7.0 preflight checks will check for connectivity to Google Cloud, enabled APIs, and permissions for service accounts. Existing clusters need to be registered in Google Cloud before upgrading. The connectivity checks are not overridable by the
--force
flag. For details, see the cluster creation and cluster upgrade documentation.Added support for installing Anthos clusters on bare metal on OpenStack. For configuration instructions, see Configure your clusters to use OpenStack.
Added support for installing Anthos clusters on bare metal, using a private package repository instead of the default Docker APT repository. For instructions and additional information, see Use a private package repository server.
Removed installation prerequisite for setting Security-Enhanced Linux (SELinux) operational mode to be permissive. The related preflight check has been removed, as well.
Removed installation prerequisite for disabling firewalld . The related preflight check has also been removed. For information on configuring ports to use firewalld with Anthos clusters on bare metal, see Configuring firewalld ports on the Network requirements page.
Updated requirements for installing behind a proxy server and removed restriction on system-wide proxy configurations. For a detailed list of prerequisites, see Installing behind a proxy.
Improved upgrade:
Updated cluster upgrade routines to ensure worker node failures do not block cluster upgrades, providing a more consistent user experience. Control plane node failures will still block cluster upgrades.
Added
bmctl
support for running upgrade preflight checks.bmctl check preflight
will run upgrade preflight checks if users specify the--kubeconfig
flag. For example:
bmctl check preflight --kubeconfig bmctl-workspace/cluster1/cluster1-kubeconfig
Updated user cluster lifecycle management:
Added support in
bmctl
for user cluster creation and upgrade functions.Improved resource handling. Anthos clusters on bare metal now reconciles node pool taints and labels to nodes unless the node has a
baremetal.cluster.gke.io/label-taint-no-sync
annotation.
Enhanced monitoring and logging:
Preview: Added out-of-the-box alerts for critical cluster metrics and events. For information on working with alerting policies and getting notified, see Creating alerting policies.
Added support for collecting ansible job logs in admin and hybrid clusters by default.
Expanded support for newer versions of operating systems:
- Added support for installing Anthos clusters on bare metal on Red Hat Enterprise Linux (RHEL) 8.3 and CentOS 8.3.
Functionality changes:
- Added support for configuring the number of pods per node. New clusters can be configured to run up to 250 pods per node. For more information about configuring nodes, see Pod networking. You can find additional information for configuring pods in the cluster creation documentation.
- Preview: Added support to use containerd as the container runtime. Anthos clusters on bare metal 1.6.x supports only Docker for container runtime (dockershim). In 1.7.0, Kubelet can be configured to use either Docker or containerd, using the new
containerRuntime
cluster config field. You must upgrade existing clusters to 1.7.0 to add or update thecontainerRuntime
field. - Added support for more load balancer
addressPool
entries undercluster.spec.loadBalancer.addressPools
. For existingaddressPools
, users can usecluster.spec.loadBalancer.AddressPools[].manualAssign
specify additionaladdressPool
entries.
Known issues:
Under rare circumstances,
bmctl upgrade
may become stuck at theMoving resources to upgraded cluster
stage after finishing upgrading all nodes in the cluster. The issue does not affect cluster operation, but the final step needs to be finished.If
bmctl
does not move forward after 30 minutes in this state, re-run thebmctl upgrade
command to complete the upgrade.The issue is captured in the
upgrade-cluster.log
file located in.../bmctl-workspace/<cluster name>/log/upgrade-cluster-<timestamp>
. The following log entry shows how the failure is reported:Operation failed, retrying with backoff. Cause: error creating "baremetal.cluster.gke.io/v1, Kind=Cluster" <cluster name>: Internal error occurred: failed calling webhook "vcluster.kb.io": Post "https://webhook-service.kube-system.svc:443/validate-baremetal-cluster-gke-io-v1-cluster? timeout=30s": net/http: TLS handshake timeout
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
February 26, 2021
Release 1.6.2
Anthos clusters on bare metal release 1.6.2 is now available. To upgrade, see Upgrading Anthos on bare metal. Anthos on bare metal 1.6.2 runs on Kubernetes 1.18.
Fixes:
- Updated custom resource API to reject changes to Cluster and NodePool configuration fields that are not currently supported. For a list of supported mutable fields, see Configuration in Known Issues.
- Updated
bmctl
to allow creating or upgrading Anthos clusters on bare metal to the currentbmctl
version (1.6.2) only. For more information about version restrictions, see Installation in Known Issues. - Fixed an issue that caused the automatic reset of bare metal machines to fail after deleting the user cluster.
- Added preflight check to verify that control group v2, or cgroup v2 for short, is not in use on the cluster machine. Anthos on bare betal 1.6.x is incompatible with cgroup v2. For more information, see Control group v2 incompatibility in Known Issues.
- Updated
csi-snapshot-validation-webhook
to support certification rotation. For more information about certificate rotation, see Security in Known Issues. - Fixed an issue to prevent constant patching for
snapshot.storage.k8s.io
CRDs. - Fixed a Certificate Signing Request (CSR) issue with
kubelet
to ensure fully qualified domain name(FQDN) hostnames are supported.
For information about the latest known issues, see Anthos on bare metal known issues in the Troubleshooting section.
January 29, 2021
Release 1.6.1
Anthos clusters on bare metal release 1.6.1 is now available. To upgrade, see Upgrading Anthos on bare metal. Anthos on bare metal 1.6.1 runs on Kubernetes 1.18.6-gke.6600.
Functionality changes:
- Added upgrade support from 1.6.0. Users are able to upgrade existing Anthos bare metal cluster from 1.6.0 to 1.6.1.
- Improved upgrade preflight check. Added preflight check before cluster upgrade to validate current cluster status, machine health and other issues before proceeding to upgrade.
- Added support for deleting mounts and data from the anthos-system StorageClass during
bmctl reset
. - Relaxed the requirement for an odd number of control plane node pools to allow customers to add and remove nodes for maintenance or replacement.
- Added support to force removing a broken worker node through annotation on the operator machine.
- Added etcddefrag pod to control-plane nodes, which are responsible for monitoring etcd's database size and defragmenting the database as needed. This helps reclaim etcd database size and recover etcd when its disk space is exceeded.
- Enabled kubelet server TLS certification auto-rotation. Kubelet on each node sends out CSR when nearing serving certificate expiration. A controller running inside the admin cluster validates and approves the CSR for user clusters.
- Added proxy support to connect to the OIDC provider. This allows overriding the cluster proxy configuration with a different proxy.
- Added
bmctl update cluster
for updating standalone clusters.
Fixes:
- Fixed bug causing cluster deletion stall problem because of pods refusing to evacuate, or dead nodes.
November 30, 2020
Release 1.6.0
Anthos on bare metal is generally available
Anthos on bare metal is a deployment option to run Anthos on physical or virtual servers, deployed on an operating system provided by you, without a hypervisor layer. Anthos on bare metal ships with built-in networking, lifecycle management, diagnostics, health checks, logging, and monitoring. Anthos on bare metal supports CentOS, Red Hat Enterprise Linux (RHEL), and Ubuntu—all validated by Google. With Anthos on bare metal, you can use your company's standard hardware and operating system images, taking advantage of existing investments, which are automatically checked and validated against Anthos infrastructure requirements.
Anthos on bare metal is available today, with either subscription or pay-as-you-go pricing. Anthos on bare metal lets you leverage existing investments in hardware, OS, and networking infrastructure. The minimum system requirement to run Anthos on bare metal is 2 nodes with a minimum total of 4 cores, 32 GB RAM, and 128 GB of disk space with no specialized hardware. The setup lets you run Anthos on bare metal on almost any infrastructure.
Anthos on bare metal uses a "bring your own operating system" model. It runs atop physical or virtual instances, and supports Red Hat Enterprise Linux 8.1/8.2, CentOS 8.1/8.2, or Ubuntu 18.04/20.04 LTS. Anthos provides overlay networking and L4/L7 load balancing. You can also integrate with your own load balancer such as F5 and Citrix. For storage, you can deploy persistent workloads using CSI integration with your existing infrastructure.
You can deploy Anthos on bare metal using one of the following deployment models:
- A standalone model lets you manage every cluster independently. This is a good choice when running in an edge location or if you want your clusters to be administered independent of one another.
- The multiple-cluster model lets central IT teams manage a fleet of clusters from a centralized cluster, called the admin cluster. This is more suitable if you want to build automation or tooling, or if you want to delegate the lifecycle of clusters to individual teams without sharing sensitive credentials such as SSH keys or Google Cloud service account details.
Like with all Anthos environments, a bare metal cluster has a thin, secure connection back to Google Cloud called Connect. After it's installed in your clusters, you can centrally view, configure, and monitor your clusters from the Google Cloud Console.
Anthos on bare metal, which is part of the Anthos 1.6 release, provides the following features and capabilities:
- Kubernetes 1.18
- Ubuntu/RHEL/CentOS support
- Standalone and multiple-cluster architecture
- In-place upgrades (minor and major)
- Overlay networking, Ingress (L7), integrated load balancing (L4, L2-Mode)
- Manual load balancing (F5, Citrix)
- Installs behind proxy support
- Preflight and health checks
- Node maintenance mode
- Cloud Monitoring and Cloud Logging
- ACM, ASM, identity, hub or connect, billing, and pay-as-you-go
- NVIDIA GPU support
- Scales to 500 nodes
- Virtual machine management (Kubevirt) preview