Forum Discussion
NimbostratusHTTP Redirect When Pool is down
I would like to craft an iRule that detects the pool assigned to the VIP has all members down. When it is down then do an http redirect to our site down web server. I have rules in place where I call a specific pool in the rule, but I would like to make it more generic so that I can apply it to any VIP without having a rule for every VIP. I posted an example of what we have been doing up to this point. Thanks.
when HTTP_REQUEST { if { [active_members RSAGA-Juniper-Pool-Prod] < 1 or [active_members RSAGA-Juniper-Radius-Pool-Prod] < 1 } { HTTP::redirect "http://frdcsd.app.medcity.net/vdi/" }
}
14 Replies
TortiCirrus
there are many ways to rome ;-)
if you do a lot of irule stuff, I would say, it is more efficient to check for a reachable backend before. So you can save some resources on f5. Especially, if you running ASM, too.
So, the request will be blocked at the beginning and will not run through a security policy before it get an redirect. But Im not 100% shure, if the security policies comes before LB_FAILED. I didn't find a picture over all the events, only this nice one:But I agree, LB_Failed is much more powerful than a simple pool member check.
Joe_Curl_105786I am actually trying the LB_FAILED. It gives me a generic rule I can deploy on a high number of VIPS, and it also allows for a more efficient iRule.
