Failed calling webhook "clusterresourceoverrides.admission.autoscaling.openshift.io" in OpenShift Container Platform 4 when DiskPressure condition is met

Solution Verified - Updated -

Issue

  • We've hit the DiskPressure on one of the Control-Plane Node(s) causing the below error to be reported when creating or updating pod. Even though clusterresourceoverride-2rb6p pod was Evicted we do not expect this to happen as two additional pods for clusterresourceoverride were still running.

    Error from server (InternalError): error when creating "/tmp/pod.yaml": Internal error occurred: failed calling webhook "clusterresourceoverrides.admission.autoscaling.openshift.io": failed to call webhook: Post "https://localhost:9400/apis/admission.autoscaling.openshift.io/v1/clusterresourceoverrides?timeout=5s": dial tcp [::1]:9400: connect: connection refused
    
  • Failed calling webhook "clusterresourceoverrides.admission.autoscaling.openshift.io" is being reported, when one of the clusterresourceoverride pods is not running on any of the control-plane Nodes.

Environment

  • Red Hat OpenShift Container Platform 4
  • Red Hat ClusterResourceOverride Operator

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