This document shows how to upgrade to version 1.8 from a 1.7 user cluster that has an Isto Gateway object.
In version 1.8 of Anthos clusters on VMware (GKE on-prem), the ingress mechanism has changed substantially from previous versions.
In versions prior to 1.8, you enabled ingress by creating an Istio Gateway object. Then you could create Ingress objects.
In version 1.8, you do not create a Gateway object. You can create Ingress objects as usual.
To upgrade to 1.8 from a 1.7 user cluster that has ingress enabled, you must first run a tool that converts the old ingress mechanism to the new one.
To check to see whether you need to run the tool, attempt to upgrade the user cluster:
gkectl upgrade cluster --kubeconfig ADMIN_CLUSTER_KUBECONFIG --config USER_CLUSTER_CONFIG
If you see the following error, then you need to run the tool:
- Validation Category: Ingress Running validation check for "User cluster Ingress"... / - [FAILURE] User cluster Ingress: detected usage of unsupported Ingress, ...
Here are the steps:
Follow the instructions for using the migration tool.
After resolving any issues remember to annotate the Gateway object.
Continue with the regular upgrade process.
If your cluster has ingress enabled, skipping the migration step might result in traffic disruption for all services using ingress.