Prometheus and AlertManger report KubeClientCertificateExpiration

Solution Verified - Updated -

Issue

  • We have received below alert about the certificate expiration.
Labels
alertname = KubeClientCertificateExpiration
cluster = cluster.example.com
job = apiserver
prometheus = openshift-monitoring/k8s
severity = warning
Annotations
message = Kubernetes API certificate is expiring in less than 7 days.

Environment

  • Red Hat OpenShift Container Platform
    • 3.11

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