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The_Y's avatar
The_Y
Icon for Cirrus rankCirrus
Aug 08, 2016

Load balance based on a server CPU load

Hello all,   I am trying to find a mechanism to allow the F5 to pull CPU usage off one server in a pool of four. The end goal here is to send all traffic to one server using a higher priority grou...
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AJ_01_135899's avatar
AJ_01_135899
Icon for Cirrostratus rankCirrostratus
Aug 08, 2016

If this is a windows environment, you could use a WMI monitor.

 

SOL 14127 mentions that it could be resource intensive if you log the monitor - so once you have it tuned properly, just turn off the logging and let the monitor run.

 

  • The_Y's avatar
    The_Y
    Icon for Cirrus rankCirrus
    Aug 09, 2016

    What's your take on the external monitor option?

     

  • Hamish's avatar
    Hamish
    Icon for Cirrocumulus rankCirrocumulus
    Aug 09, 2016

    External monitors are fine, but there's nothing to say they won't be as (Or more) resource intensive than the DCA option. Plus you have to maintain it.

     

    With regards to resource usage, DCA uses SNMP, which is built to be simple and light weight.

     

    The message about resource usage for SNMP in SOL 14127 is IF you have LOGGING enabled. Because the log file grows and there isn't an automatic mechanism to roll it over and/or clean it out.

     

    As AJ says above, just don't enable the logging, and go the SNMP route.