iRule

Question

We have 3 pool members assigned to a Pool. When one of the specific pool member goes down out of the 3 pool member, the URL has to be redirected to sorry/maintenance page.&nbsp;
For example, if the names of the pool members are A, B and C. I need an iRule to redirect to sorry/maintenance page, only if Pool member B goes down. But if one of the other pool members like A or C goes down, traffic has to pass to other pool members.&nbsp;
Can you provide an iRule to accomplish this task ?&nbsp;

kunjan · Answer

See if this helps:
when HTTP_REQUEST {
   if {! ([active_members -list [LB::server pool]] contains "") } {
      HTTP::respond 302 Location "some maintenance url" 
   }
}

nitass · Answer

you can also check status of specific pool member using LB::status and take action on it e.g. redirect to sorry page.&nbsp;
LB::status&nbsp;
https://devcentral.f5.com/wiki/iRules.LB__status.ashx&nbsp;

Forum Discussion

iRule

2 Replies

Recent Discussions

LDAPS and renegotiation

Need help on i-rule to specific uri path

vulnerabilities-CVE-2020-16150 & CVE-2013-0169

Reverse Proxy Not Behaving

F5 terminal - help to run commands - disk space full

Related Content

iRules Style Guide

Hey ChatGPT, can you write iRules?

POC: Validate JWT with iRule

irule

Avoiding Common iRules Security Pitfalls