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OpenShift Container Platform 4 でアラート ClusterVersionOperatorDown が発生している

Solution In Progress - Updated -

Issue

  • OCP 4 クラスターの 1 つで以下のアラートを受信しています。cluster-version-operator Pod は起動して実行中ですが、以下のメッセージが表示されます。

    Alert details (rated as a P2)
    alert: ClusterVersionOperatorDown
    expr: absent(up{job="cluster-version-operator"} == 1)
    for: 10m
    labels:
      severity: critical
    annotations:
      message: Cluster version operator has disappeared from Prometheus target discovery. Operator may be down or disabled, cluster will not be kept up to date and upgrades will not be possible.
    

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4.x

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