Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

JamesCrk's avatar
JamesCrk
Icon for Cirrus rankCirrus
Nov 14, 2023

F5 irule redirect with healthcheck

Hi guys,

 

how can we do something like so:

 

 

when HTTP_REQUEST {
if { [HTTP::host] eq "mainsite.com" } {

(check here is http://site1.com up and responding - if yes)  
HTTP::redirect http://site1.com

 } Else {
HTTP::redirect http://site2.com
}
}

 

 

 

 

application delivery

3 Replies

  • mwi's avatar
    mwi
    Icon for Cirrus rankCirrus
    Nov 15, 2023

    i havent testet it, but i think it should work if you put site1.com in a pool with a http monitor and check active_members.

    Something like that

    when HTTP_REQUEST {
if { [HTTP::host] eq "mainsite.com" } {

if { [active_members pool_site1] > 0 } {
HTTP::redirect http://site1.com

 } Else {
HTTP::redirect http://site2.com
}
}