Management Center Failover Pair Frequent Disconnects and Sync Errors

Products

• Management Center

Issue/Introduction

Management Center (MC) failover pair is constantly disconnecting and showing unreachable. They are also not synced frequently, which prevents you from doing a failover if needed or preventing an automatic failover. 

Cause

Temporary network communication between the failover pairs could cause the individual MCs to not sync and the MCs can get into a state where they will not see one another.

Resolution

First and foremost, restore and verify communication between the MC pair. 

• If the MC pair is still failing to sync and see eachother in a failover pair restart Management Center services on each device:

  • Go to the Management Center CLI.
  • Enter privileged mode by typing enable at the command prompt.
  • Enter your enable password and press Enter.
  • At the # prompt
    • # system-services restart management-center

• If the MC pair is still not syncing and not seeing eachother in a failover pair, then disable and re-enable failover on the primary and backup failover pair:

  • Disable Failover and confirm on both devices:

    On the primary Management Center:
    Management Center# failover disable
Management Center# failover view

    On the backup Management Center:
    Management Center# failover disable
Management Center# failover view

  • Restore Failover on both MC devices:

    On the primary Management Center:
    Management Center# failover make-primary
Management Center# failover view

    On the backup Management Center:
    Management Center# failover make-secondary
Management Center# failover view

• If the MC pair is still not working, then try restarting each unit. 

If the problem persists, please open a case through the customer portal.