Forum Discussion
spmedge_85938
Dec 29, 2011Nimbostratus
I am new to iRule
I want to have a iRule that say if a web server give a http 404 or 500 error the web server should be fore offline. How do I do this in F5?
- nitassEmployeeis the example usable?
- spmedge_85938NimbostratusDo I have to setup a monitor ? or only do this iRule and it will work for me?
- nitassEmployeeirule 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
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