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Syslog-V_277002's avatar
Syslog-V_277002
Icon for Nimbostratus rankNimbostratus
Nov 08, 2017

Event on MEMBER down

Hi all, I need to run an iRule when a member (NOT the pool / LB_FAILED) of the pool changes its state. Which is the correct event to track?   Thanks  
application delivery
BIG-IP
Lee_Sutcliffe's avatar
Lee_Sutcliffe
Icon for Nacreous rankNacreous
Nov 08, 2017

iRules don't execute on pool members going down, they are event driven based on traffic traversing the device. However you can check the status of the pool in CLIENT_ACCEPTED (TCP handshake would need to be completed before the pool members are checked) such as using

active_members

to see see if the number of active members has changed or below a threshold.

 

 

when CLIENT_ACCEPTED {
  if { [active_members http_pool] >= 2 } {
    pool http_pool
  }
}

 

Are you able to elaborate anymore on your requirement?