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Forum Discussion

Austin_Geraci's avatar
Austin_Geraci
Icon for MVP rankMVP
Aug 23, 2010

Conflicting info... Can someone confirm when a pool member is added back to a pool when available?

I've received some conflicting info recently and need some functionality confirmed.

 

 

Say a Pool is set up with monitor attrbutes = 5sec interval & 16sec timeout.

 

 

When does a unavailable pool member get added back into the pool? After 3 successfull passed monitors or after the first passed monitor?

 

 

Thanks!

 

 

config
design

3 Replies

  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus
    Aug 23, 2010
    iRuleYou,

     

     

    As far as I'm aware it needs one successful monitor to bring the node up.

     

     

    Rgds

     

    N
  • Haarith_Devaraj's avatar
    Haarith_Devaraj
    Icon for Nimbostratus rankNimbostratus
    Aug 23, 2010
    First passed monitor is enough to bring it back IS, UNLESS you have manual resume specified. ( some people like this option as they probably want additional checks done and say a sysadmin to give a OK before taking a failed machine back up). If you dont have that setup, it should be the very first monitor that goes ok.

     

     

    As a FYI: you have 10 nodes in the pool...then based on what we have observed, 2 nodes get polled every second..so at t==5 all 10 are done..this repeats..

     

     

  • Austin_Geraci's avatar
    Austin_Geraci
    Icon for MVP rankMVP
    Aug 24, 2010

    Thanks, someone was under the impression the member had to pass the same amount of monitors it had to fail, and I had a hard time finding doc where it said definitively that was the case...

     

     

    @haarith, Yep yep, manual resume does come in handy with some apps.. I've seen similar behavior, the boxes seem to stagger the polls...