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Mobility Master Promotion Procedures

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  • 1.  Mobility Master Promotion Procedures

    Posted Jan 07, 2020 11:20 AM

    Hello,

     

    Over the holidays one of the two vMobility Masters I have in an Active-Passive cluster went down.

     

    Upon return from holiday, I received reports from users that they could no longer use various casting services (AirPlay, etc.) on the network.

     

    I looked into it and found that on my vMM01 Master, these services were stuck in intializing:

     

    Results of show process monitor statistics | include InitializingResults of show process monitor statistics | include Initializing

     

    And the mDNS service was stuck in a PROCESS_NOT_RESPONDING_CRITICAL state:

    Result of show process monitor statistics | include NOTResult of show process monitor statistics | include NOT

    I logged into my slave, vMM02 and ran the same commands and all services are running properly.

     

    I did a reload on vMM01 to try to reinit the database and get the services up and running. I monitored their status as the vMM01 completed booting, all services above stayed in initialziing for a while, then the mDNS returned to it's not responding state.

     

    I presume this is because it cannot write temporary mDNS clients to the Mongo DB.

     

    I've created a ticket with the TAC but am wondering what the best practice for promoting my MM02 to master for the time being until I can get the database issue resolved.

     

    I presume it is #>halt but wanted to confirm this with the community before I fire it off.

     

    Thanks for your time.