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Trident SANまたはNAS RWO PVを持つPODが別のノードに移動するとオフラインになる

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環境

  • Openshift/Kubernetes
  • SAN/iSCSI PV
  • NAS RWO PV
  • Trident

問題

次のエラーは、PV を使用している元のポッドが障害が発生するか、そのノードで削除され、Kubernetes が他のノードの 1 つで起動しようとしているときに、ポッドが RWO ベースの PVC、たとえば iSCSI ontap-san バックエンドを使用している場合や、NFS RWO タイプの PV を使用している場合に発生します:

Multi-Attach error for volume "pvc-<UUID>" Volume is already exclusively attached to one node and can't be attached to another

ただし、しばらくすると、唯一残るエラーは次のとおりです:

Warning FailedMount <time_delay> kubelet MountVolume.MountDevice failed for volume "pvc-<UUID>" : rpc error: code = DeadlineExceeded desc = context deadline exceeded

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