Can we make status of virtual server to depend on number of nodes down ???

Hi buddy,

1. Use the below script to monitor the availability. This needs to customise according to your requirements. Copy the script to the F5 big ip devices and attach to the specific pool.

   !/bin/sh
   pidfile="/var/run/$MONITOR_NAME.$1..$2.pid"
    Send signal to the process group to kill our former self and any children
    as external monitors are run with SIGHUP blocked
   if [ -f $pidfile ]
   then
   kill -9 -`cat $pidfile` > /dev/null 2>&1
   fi
   echo "$$" > $pidfile
   minup=2
   upmembers=`tmsh show /ltm pool <> members members |grep "Current Active Members" |awk -F" : " '{ print $2 }'`
   if [ $upmembers -ge $minup ]
   then
   rm -f $pidfile
   state=`tmsh show /ltm virtual <> |grep "State" |awk -F" : " '{ print $2 }'`
   if [ $state == "disabled" ]
   then
   logger -p local0.info -t MONITOR-ALERT "Pool <> members Monitor UP - enabling virtual <>"
   tmsh modify /ltm virtual <> enabled
   fi
   echo "up"
   else
   rm -f $pidfile
   state=`tmsh show /ltm virtual <> |grep "State" |awk -F" : " '{ print $2 }'`
   if [ $state == "enabled" ]
   then
   logger -p local0.info -t MONITOR-ALERT "Pool $pool Monitor DOWN - disabling virtual $virtual"
   tmsh modify /ltm virtual <> disabled
   fi
   echo "up"
   fi
   

2. Use GTM global availability lb method. This will make sure that pool members are in Active/Passive method.

Let me know if you need any more info.

-JINSHU