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Aviv's avatar
Aviv
Icon for Cirrus rankCirrus
Mar 16, 2016

Standby becomes Active

Hi! i have an ha ver 12.0 sometimes i found that the the standy unit becomes active without doing anything. what wrong how can i find why?

 

Thanks,

 

Aviv Hassidim

 

application delivery
LTM

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  • Amanpreet_Singh's avatar
    Amanpreet_Singh
    Icon for Cirrostratus rankCirrostratus
    Mar 16, 2016

    Hi Aviv,

     

    There could be many reasons to LB fail-over, based on what type of fail-over setup you are running in your environment. What did you see in /var/log/ltm?

     

    • If you have "network fail-over" setup, it could be caused by lose heartbeat, Search for "high availability daemon_heartbeat" in logs.
    • If any daemon is failed, check what is configured as failed triggered action.
    • And more...

    Anyway, /var/log/tmm and /var/log/ltm can reveal the truth.

     

    Regards,

     

  • BB16's avatar
    BB16
    Icon for Nimbostratus rankNimbostratus
    Aug 17, 2017

    Hi Aman, In how many seconds standby becomes active when active fail? Or we can manually configure it.

     

    • BB16's avatar
      BB16
      Icon for Nimbostratus rankNimbostratus
      Aug 18, 2017

      Thanks for your reply & valuable time. There is newbie/user in F5 DC how can we explain him on this? This info was needed to me as well. Thanks again.