Forum Discussion

Anthony's avatar
Anthony
Icon for Nimbostratus rankNimbostratus
Sep 02, 2013

iRule to disable a pool to new connections

I'm wondering if anyone knows whether it is possible to set a pool state from within an iRule?   I am very keen to try to automate the disabling of new connections at a certain time of day.   ...
application delivery
devops
iRules
nitass's avatar
nitass
Icon for Employee rankEmployee
Sep 08, 2013

just in case you have not seen this.

Note: Calling LB::down in an iRule triggers an immediate monitor probe regardless of the monitor interval settings.

LB::down wiki

https://devcentral.f5.com/wiki/irules.LB__down.ashx

e.g.

root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm rule myrule
ltm rule myrule {
    when HTTP_REQUEST {
  log local0. "LB::down pool foo member 200.200.200.101 80"
  LB::down pool foo member 200.200.200.101 80
}
}
root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm pool foo
ltm pool foo {
    members {
        200.200.200.101:80 {
            address 200.200.200.101
            session monitor-enabled
            state up
        }
    }
    monitor myhttp
}

[root@ve11a:Active:Changes Pending] config  tail -f /var/log/ltm
Sep  8 16:14:48 ve11a info tmm[16464]: Rule /Common/myrule : LB::down pool foo member 200.200.200.101 80
Sep  8 16:14:48 ve11a err tmm[16464]: 01010028:3: No members available for pool /Common/foo
Sep  8 16:14:48 ve11a notice mcpd[13124]: 01070638:5: Pool /Common/foo member /Common/200.200.200.101:80 monitor status iRule down. [ /Common/myhttp: up ]  [ was up for 0hr:1min:56sec ]
Sep  8 16:14:48 ve11a err tmm1[16464]: 01010028:3: No members available for pool /Common/foo
Sep  8 16:14:49 ve11a notice mcpd[13124]: 01070727:5: Pool /Common/foo member /Common/200.200.200.101:80 monitor status up. [ /Common/myhttp: up ]  [ was iRule down for 0hr:0min:1sec ]
Sep  8 16:14:49 ve11a err tmm[16464]: 01010221:3: Pool /Common/foo now has available members
Sep  8 16:14:49 ve11a err tmm1[16464]: 01010221:3: Pool /Common/foo now has available members