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Domai's avatar
Domai
Icon for Altostratus rankAltostratus
Apr 12, 2016

iRule help

Hello Guys, Quick question and need help with the iRule below. The goal is to setup an apology page when the all the pool members are down. so using the iRule below (Thank you nitass)   ...
application delivery
iRules
maintenance page
iaine's avatar
iaine
Icon for Nacreous rankNacreous
Apr 14, 2016

Hi

 

You could either send your clients a redirect back to /apology (or some other) or you just need to change your logic slightly so that you are not looking for an absolute path. Something like this might work

 

when HTTP_REQUEST { 

if {[active_members [LB::server pool]] < 1} { 
    if { [HTTP::uri] eq "/apology_pic"} {
        HTTP::respond 200 content [ifile get "apology_pic"] }
    else {

 HTTP::respond 200 content [ifile get "apology"] }

}
}

So with this code you are checking for pool availability first, if the pool is down and the call is for /apology_pic then the iRule will serve the iFile, otherwise the holding page iFile gets served. This way the uri doesn't change in the browser and so if someone refreshes and your pool becomes available again then they should be able to carry on browsing