Webhook fails to start

[Peter_Lepsis]

Dear all,

One of our customers tries to install Dynatrace operator on OpenShift in Full classic mode. It's a really old version (1.2.2), and the webhook does not start. The error I found is:
{"level":"info","ts":"2025-07-21T11:23:41.841Z","logger":"main","msg":"unable to retrieve the complete list of server APIs: metrics.k8s.io/v1beta1: stale GroupVersion discovery: metrics.k8s.io/v1beta1"}

I ask this in the Community because I know that this version is not supported anymore.

Thanks a lot

Kind regards, Peter Lepsis

[mark_bley]

This happens while registering a new webhook and checking against the K8 Api for the necesary API version.

kubectl api-versions | grep metrics

 Check whether the version is present, this does not look like a Dynatrace/Operator related problem.

Also I would suggest to run a more up to date operator version. 

[Peter_Lepsis]

Hello Mark,

yes, I think also that it's not related to DT operator. However my hands are tid as I cannot see anything on the customer's openshift cluster because I don't have access to it. 

Kind regards

Peter