Fixed the unnecessary creation of two separate test slices (resulting in 4
systemd log messages total + runtime overhead) for every runc execution.
Fixed a performance regression in completely fair scheduler (CFS).
Date: Oct 21, 2019
Fixed an issue in systemd that resulted in unnecessary CPU consumption.
Fixed an issue in runc that resulted in unnecessary CPU consumption.
Date: Oct 08, 2019
Upgraded the Linux kernel to 4.14.145.
Backported a kernel patch to ensure the cfs cgroup quota/period ratio
always stays the same. This addresses a Kubernetes issue where the pod
cgroup could be changed into an inconsistent state.
Date: Sep 04, 2019
Upgraded containerd to v1.2.8.
Upgraded the Linux kernel to version 4.14.138.
Backported upstream writeback patches to fix a softlockup issue.
Date: Aug 08, 2019
Upgraded the Linux kernel to v4.14.137. This resolves CVE-2019-1125.
Date: Jul 12, 2019
Upgraded Docker to version 18.09.7. This resolves CVE-2018-15664.
Upgraded runc to version 1.0.0_rc8.
Upgraded docker-proxy to version 0.8.0_p20190513.
Date: Jul 02, 2019
Upgraded containerd to v1.2.7.
Updated kernel to version v4.14.131.
Fixed vulnerability in app-arch/bzip2 (CVE-2019-12900).
Fixed an issue introduced by NFLX-2019-001 fixes.
Date: Jun 19, 2019
Updated the Linux kernel to version 4.14.127 to resolve the NFLX-2019-001
TCP SACK vulnerabilities.
Date: Jun 17, 2019
Updated kernel to version v4.14.124.
Backported affinity change-set for napi-tx.
Date: May 28, 2019
Upgraded curl to v7.64.1 to fix CVE-2018-16890.
Upgraded containerd to version 1.2.6.
Set OOM score to -999 for docker.service and containerd.service to enhance
the reliability of core system daemons.
Add restart policy in containerd.service, and corrected docker.service's
dependency on containerd.service to allow containerd to recover from crashes.
Backport affinity changes to support napi-tx in COS.
Cherry-picked upstream patch https://patchwork.kernel.org/patch/10951403/ in kernel to fix
a bug in lockd introduced by commit 01b79d20008d "lockd: Show pid of lockd for remote locks"
in Linux kernel v4.14.105.
Rotated keys used by UEFI Secure Boot for signing and verifying the UEFI boot path.
Date: May 16, 2019
Merged Linux Stable Kernel 'v4.14.119' for resolving
Microarchitectural Data Sampling (MDS) vulnerabilities
(CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091).
Mitigated a mount hang issue in the Linux kernel.
Date: Apr 19, 2019
Set LimitNOFILE to 1048576 in containerd.service to fix an issue
where the file descriptor limit was not being properly applied to
Date: Apr 01, 2019
Included perf tool in the image.
Fixed a bug that dockerd may start containerd even if
Fixed an issue where Docker did not preserve the UIDs/GIDs of the
init process on exec.
cos-73-11647-112-0 (vs Milestone 69)
Date: Mar 25, 2019
Added support for collecting kernel memory crash dumps.
Added support for RAID and LVM.
Added support for IPv6.
Added support for iscsi and multipath in the kernel.
Added support for kernel module signing.
Enabled auto updates on Shielded VMs that have never booted in secure
boot mode. Auto update is still disabled on Shielded VMs that have
previously booted in secure boot mode.
Disabled the CONFIG_DEVMEM configuration option in the kernel
to restrict privileged access to system memory.
Added behavior for logging more debugging information to the serial
console during boot.
issue observed in Kubernetes liveness probes.
Configured docker.service to always restart Docker after 10 seconds.
Fixed an issue where a race condition between Docker and containerd
resulted in a Docker live restore failure.
Increased fs.inotify.max_user_instances to 1024.
Configured containerd to run as a standalone systemd service.
Upgraded the built-in kubelet to v1.13.3.
Upgraded containerd to v1.2.5.
Upgraded openssl to 1.0.2q.
Upgraded Docker to 18.09.3.
Installed the pigz package for faster Docker image downloads.
Installed the keyutils package.
Installed the sosreport package.
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