Unable to upgrade GKE cluster

[Thakurvaibhav]

What happened?

Unable to upgrade from GKE 1.22 to 1.23
The cluster version was set using initialClusterVersion: "1.22" and releaseChannel.channel: "STABLE"
As the next step, I updated the field to initialClusterVersion: "1.23" but the GKE cluster does not seem to get the upgrade. I don't see any helpful logs in the crossplane gcp provider pod either.

How can we reproduce it?

Provision a GKE cluster with initialClusterVersion: "1.22" and releaseChannel.channel: "STABLE" and apply the manifest using kubectl or ArgoCD. Then, update the initialClusterVersion: "1.23" and apply the manifest again

What environment did it happen in?

Crossplane version: 1.6.2
GCP Provider version: v0.20.0

[Feggah]

Hey @Thakurvaibhav, thanks for raising this issue!

This field is only used in the creation time. initialClusterVersion is immutable (modifying it won't update the external resource). I don't think you can upgrade the master version using the provider.

[Thakurvaibhav]

Hi @Feggah
Thank you for the response. What is the recommended way to upgrade clusters?

[Feggah]

I don't have an answer for this using Crossplane, lack of my experience with using the Managed Resource 😢

But the master version is upgraded automatically by the GCP based on the releaseChannel that you chose.

You can also upgrade the version manually by using the gcloud CLI, but using this provider I'm not sure. Maybe someone else knows how to do it

[ghost]

Just noting this is a requirement for us to be able to adopt crossplane. Our org does not use the release channels, rather we need to directly specify the cluster version. We would like to be able to update our GKE versions through crossplane .