custom-metrics-stackdriver-adapter - couldn't get resource list for external.metrics.k8s.io/v1beta1: Got empty response for: external.metrics.k8s.io/v1beta1

[oprudkyi]

Hi,

after update to 1.25.6-gke.200 each run of kubectl produces warning messages (seems they didn't affect functionality though)

kubectl get pods
E0304 11:26:51.613869  858314 memcache.go:255] couldn't get resource list for external.metrics.k8s.io/v1beta1: Got empty response for: external.metrics.k8s.io/v1beta1

i.e. the empty response handled as error

kubectl get --raw '/apis/external.metrics.k8s.io/v1beta1'            
{"kind":"APIResourceList","apiVersion":"v1","groupVersion":"external.metrics.k8s.io/v1beta1","resources":[]}

it seems like a bug introduced in service discovery
kubernetes-sigs/custom-metrics-apiserver#146

bit KEDA has workaround kedacore/keda#4224 (comment) for this (see comment)
is there any way to have similar workaround for custom-metrics-stackdriver-adapter as well ? some sort of dummy metric ?

[oprudkyi]

original kubectl v1.25.7 doesn't have issues https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/

[a-candiotti-pvotal]

i have the same pb with:
Client Version: v1.26.2
Server Version: v1.24.9-gke.3200

[mal-berbatov-ci]

Same problem here

Client Version: v1.27.10
Server Version: v1.27.12-gke.1115000