vSphere HA 5.x restart attempt timing

I wrote about how vSphere HA 5.x restart attempt timing works a long time ago but there appears still to be some confusion about this. I figured I would clarify this a bit more, I don’t think I can make it more simple than this:

  • Initial restart attempt
  • If the initial attempt failed, a restart will be retried after 2 minutes of the previous attempt
  • If the previous attempt failed, a restart will be retried after 4 minutes of the previous attempt
  • If the previous attempt failed, a restart will be retried after 8 minutes of the previous attempt
  • If the previous attempt failed, a restart will be retried after 16 minutes of the previous attempt

After the fifth failed attempt the cycle ends. Well that is, unless a new master host is selected (for whatever reason) between the first and the fifth attempt. In that case, we start counting again. Meaning that if a new master is selected after attempt 3, the new master will start with the “initial restart attempt.

Or as Frank Denneman would say:

vSphere HA 5.x restart attempt timing

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    Comments

    1. Ranjit says

      It is still confusing. Can you re-write it?

      What happens after all 5 attempts happen and nothing works – it stops?

    2. says

      Duncan,
      If you use the advanced option das.maxvmrestartcount, and say set it to 10, at what interval do the last 5 restarts take effect, it used to be 8 minutes, but then the restart timers changed to the ones in your post and I can’t find the info now.

      Thanks

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