Number of defined nodes in a pool

You would create a new iRule using the code above provided by unRuleY, modifying the names of the pools & of servers in each to match your situation.

 

 

If all you want is a log message when you have less than 12 servers in a specific pool, you can simplify the code to:

when LB_SELECTED {
   if { [active_members SEARCH_NODES] < 12 } {
      log local0. "Pool SEARCH_NODES has less than 12 active members!"
   }
}

 

 

HTH

 

/deb