dynamic loadbalancing using value from node

Two things worth considering:

1. If you needed this to be a real-time thing, then you'd necessarily have to query each server and compare scores on each new user session. To do this you'd use a series of sideband calls inside an iRule, and that would invariable add some latency.

2. Doing this in a monitor makes it, by definition, an asynchronous process, so you could just as well have a script poll all of the servers periodically and then update ratio values of a given pool. Something like this:

   !/bin/bash
   
    define pool name
   pool="local-pool";
   
    define pool member listener port
   port=80;
   
   arr=($(tmsh list ltm pool $pool |grep address |awk -F" " '{ print $2 }'));
   
   for x in "${arr[@]}"
   do
       score=`curl -fNs http://$x/score.php`;
       tmsh modify ltm pool $pool members modify { $x:$port { ratio $score } };
   done