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What is the logging behavior for cluster peer unavailable and available state transitions?

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ontap-9
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CORE
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Applies to

  • ONTAP 9
  • Cluster peering environment
  • SnapMirror replication

Answer

When the cpeer.unavailable alert is triggered in ONTAP, the following logging behavior applies:
  • Unavailable State Logging:
    • An EMS message is generated when a remote cluster transitions from available to unavailable:
      •  cpeer.unavailable:ALERT]: Peer cluster <cluster_name> is no longer available
  • Available State Logging:
    • No EMS message is generated when the remote cluster returns to available state
    • The transition to available is implicit between each cpeer.unavailable message
  • Recovery Time Identification:
    • There is no explicit log entry recording the recovery timestamp
    • No configuration option exists to enable additional logging for recovery events
    • Recovery time cannot be directly determined from ONTAP logs
  • Recommended Verification Commands:
    • After a cpeer.unavailable alert, verify cluster peer and object store health using:

::> cluster peer show

::> system health status show

::> snapmirror show-history

::> storage aggregate object-store show

    Note: When Availability displays as available in the output, the object store is accessible and functioning normally.

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