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Openshift Container Platform 4 における NodeClockNotSynchronising アラートのトラブルシューティング

Solution In Progress - Updated -

Issue

Openshift Container Platform 4 では、NodeClockNotSynchronising と呼ばれる以下の警告が発生しています。

           alert: 'NodeClockNotSynchronising',
           expr: |||
             min_over_time(node_timex_sync_status[5m]) == 0
           ||| % $._config,
           'for': '10m',
           labels: {
             severity: 'warning',
           },
           annotations: {
             summary: 'Clock not synchronising.',
             message: 'Clock on {{ $labels.instance }} is not synchronising. Ensure NTP is configured on this host.',

Environment

  • Red Hat Openshift Container Platform 4 [RHOCP]
  • Chrony

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