クラスター名オブジェクトのパスワード変更イベント中に発生する切断の問題

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Category:: ontap-9

Specialty:: nas

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環境

ONTAP 9
SMB/CIFS
Active Directory
File Share Witness
Cluster Name Object（CNO）
NTLM / KERBEROS

問題

Microsoft Windowsフェールオーバークラスターのファイル共有監視として使用されるSMB共有で、断続的な切断の問題が確認されました
切断中、Windowsクラスターノードは別のノードにフェールオーバーし、次のようなイベントを報告しました：
- Event ID 1564: “File share witness resource ‘FileShareWitness’ failed to arbitrate for the file share…”
- Event ID 1069: “Cluster resource ‘FileShareWitness’ of type ‘File Share Witness’ in clustered role ‘Cluster Group’ failed.”
- Event ID 1205, 1254: Clustered role failed to come online or offline.
イベント全体の例：
- Log Name:    System
  Source:     Microsoft-Windows-FailoverClustering
  Date:      4/13/2026 10:33:06 PM
  Event ID:    1564
  Task Category: File Share Witness Resource
  Level:     Critical
  Keywords:
  User:      SYSTEM
  Computer:    servername.domain.com
  Description:
  File share witness resource 'File Share Witness' failed to arbitrate for the file share '\\vservername\Clusters_Quorums\servername.domain.com'. Please ensure that file share '\\vservername\Clusters_Quorums\servername.domain.com' exists and is accessible by the cluster.
- Log Name:    System
  Source:     Microsoft-Windows-FailoverClustering
  Date:      4/13/2026 10:33:06 PM
  Event ID:    1069
  Task Category: Resource Control Manager
  Level:     Error
  Keywords:
  User:      SYSTEM
  Computer:    servername.domain.com
  Description:
  Cluster resource 'File Share Witness' of type 'File Share Witness' in clustered role 'Cluster Group' failed.
  Based on the failure policies for the resource and role, the cluster service may try to bring the resource online on this node or move the group to another node of the cluster and then restart it. Check the resource and group state using Failover Cluster Manager or the Get-ClusterResource Windows PowerShell cmdlet.