Forum Discussion
SP_266134
Nimbostratus
NimbostratusTime based iRule to take off one node offline
I have VS and two nodes in the pool. I want to write an Irule so that at 1.00 AM each day one node will be taken off the pool and don’t want the traffic to do load balancing. During this 1 hr or 2 hr...
youssef1
Cumulonimbus
CumulonimbusHello,
Try this:
when HTTP_REQUEST {
set start_date "02:00"
set end_date "04:00"
set server "1.2.3.4"
set port "443"
set start [clock scan $start_date]
set static::end [clock scan $end_date]
set now [clock seconds]
if {$now > $start and $now < $end}{
LB::down pool SOMEPOOL member $server $port
}
}
Additionnal information you can use Stanislas Irule for determine time, day, ...:
https://devcentral.f5.com/questions/irule-to-block-access-of-vs-on-specific-days
Most important is this command "LB::down pool poolname member address port"
https://devcentral.f5.com/Wiki/Default.aspx?Page=LB__down&NS=iRules
For information LB::down allow you to prevent that your request will be send to specific pool member for eache request done. And when your maitenance periode will be finished, health of this poolmember will be up on the next health check...
