Kube-scheduler is not scheduling pods due to client certificate not renewed automatically in OpenShift 4

Issue

• How to renew the kube-scheduler client certificate if it is not automatically rotated?

• What to do when pods remain in Pending status and kube-scheduler log shows errors like:

  2020-09-17T14:50:42.508114153Z E0917 14:50:42.508028       1 reflector.go:153] k8s.io/kubernetes/cmd/kube-scheduler/app/server.go:246: Failed to list *v1.Pod: Unauthorized