node selection string from v 4.x to v 9.x

Hi Vasile -

Something like this should work in 9.2 (replacing POOL with the name of the default pool):

when HTTP_REQUEST {
   set myNode [findstr [string tolower [HTTP::uri]] "?ip=" 4 "/"]
   if { ($myNodeIP ne "") and ([LB::status pool POOL member $myNodeIP 80] ne "down") } {
      pool POOL $myNodeIP 80
   }
}

For the condition using LB::status, you will need to be running at least 9.2. In older 9.x versions, you can instead add an LB_FAILED event to catch that condition and load balance in the default pool instead:

when HTTP_REQUEST {
   set myNode [findstr [string tolower [HTTP::uri]] "?ip=" 4 "/"]
   if { $myNodeIP ne "" } {
      pool POOL $myNodeIP 80
   }
}
when LB_FAILED {
   LB::reselect
}

HTH

/deb