Forum Discussion

  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Dec 29, 2011
    is the example usable?

     

     

    LB::down wiki

     

    http://devcentral.f5.com/wiki/iRules.LB__down.ashx
  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Dec 29, 2011
    irule will works. anyway, why do you need to use irule? this could also be done by ECV (Extended Content Verification) health monitor. 

    [root@ve1023:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.19.79:80
   ip protocol 6
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve1023:Active] config  b pool foo list
pool foo {
   members 200.200.200.101:80 {}
}
[root@ve1023:Active] config  b rule myrule list
rule myrule {
   when HTTP_RESPONSE {
        if {[HTTP::status] equals "200"} {
                LB::down
        }
}
}

[root@ve1023:Active] config  b pool foo|grep -i pool\ member
+-> POOL MEMBER foo/200.200.200.101:80   active,unchecked

[root@ve1023:Active] config  curl -i http://172.28.19.79
HTTP/1.1 200 OK
Date: Thu, 29 Dec 2011 16:03:37 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Fri, 11 Nov 2011 14:48:14 GMT
ETag: "4183e4-3e-9c564780"
Accept-Ranges: bytes
Content-Length: 62
Content-Type: text/html; charset=UTF-8




This is 101 host.



[root@ve1023:Active] config  tail -f /var/log/ltm
Dec 29 08:03:23 local/tmm err tmm[26866]: 01010028:3: No members available for pool foo
Dec 29 08:03:23 local/ve1023 err mcpd[25539]: 01070809:3: iRule has marked pool member 200.200.200.101:80 down, no monitor to mark up.
Dec 29 08:03:23 local/ve1023 notice mcpd[25539]: 01070638:5: Pool member 200.200.200.101:80 monitor status iRule down.

[root@ve1023:Active] config  b pool foo|grep -i pool\ member
+-> POOL MEMBER foo/200.200.200.101:80   inactive,irule down