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Both CVO nodes in Azure HA pair are impacted by same maintenance event

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cloud-volumes-ontap-cvo
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cloud
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Applies to

  • ONTAP 9
  • Cloud Volumes ONTAP (CVO)
  • Microsoft Azure

Issue

  • Both nodes receive a freeze event within a minute due to Cloud provider maintenance event

Sat Nov 12 12:01:07 -0500 [CVONODE-02: mgwd: vsa.scheduledEvent.scheduled:alert]: Cloud provider event scheduled for node [CVONODE-01". ID: 96CABDCB-D34C-4EE0-A425-BFEA34D31ADD. Type: freeze. Not before: 11/12/2022 12:15:43.
Sat Nov 12 12:01:50 -0500 [CVONODE-02: notifyd: callhome.invoke:notice]: Call home for USER_TRIGGERED (TEST:MAINT=1h Cloud Provider Maintenance Event. Status: scheduled. Type: freeze. VM: [CVONODE-vm2.)

Sat Nov 12 12:01:21 -0500 [CVONODE-01: mgwd: vsa.scheduledEvent.scheduled:alert]: Cloud provider event scheduled for node [CVONODE-02". ID: 4C50DF59-6939-473E-90E0-2200FFBF45E6. Type: freeze. Not before: 11/12/2022 12:15:43.
Sat Nov 12 12:02:01 -0500 [CVONODE-01: notifyd: callhome.invoke:notice]: Call home for USER_TRIGGERED (TEST:MAINT=1h Cloud Provider Maintenance Event. Status: scheduled. Type: freeze. VM: [CVONODE-vm1.)

  • The first CVO node that received the freeze event attempts to halt and be taken over by the partner
  • The partner node starts to takeover, but it loses access to disks and panics due to faults in the cloud provider backend
  • Both nodes are down causing an unexpected outage

 

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