Forum Discussion
Kiran_Kumar
Nimbostratus
NimbostratusiRule to send http status 400 code when pool is offline for a web service call
Hi Friends,
Could anyone help me with an iRule to send a http 400 status when all the pool members in a pool are offline.
Typically I would use a go-away iRule with a redirect url. but my case i...
marco_octavian_Nimbostratus
NimbostratusScratch that first irule. It was untested and has flaws. I agree with Jie about the no-cache. Give this one a try.
when HTTP_REQUEST {
if { [active_members [LB::server pool]] == 0 } {
HTTP::respond 400 content "
Bad Request page
400 - The request could not be understood by the server due to malformed syntax.
" Cache-Control No-Cache Pragma No-Cache"
}
}
hoolioCirrostratus
Nice solution Marco. You could replace the ""s with {} around the content to avoid having to escape any meta-characters in the fuller HTML that an admin might use: HTTP::respond 400 content {...} header1 value1 headerN valueN
Kiran_KumarMarco, Thanks very much for your solution. Could you please advise how to make sure that the client doesnt know that its my F5 that sends this message. In other words, I dont want the client to be aware of my F5, can we put some dummy server name. If so how do we get it accomplished as part of the above solution. I am new to F5 iRule coding, so need your help if you have any suggestions. Thanks again for you and all the friends who responded to my question.
