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Pierrejn's avatar
Pierrejn
Icon for Nimbostratus rankNimbostratus
Feb 06, 2017

iRule Help Please

I'm trying to combine L7 Load Balancing with sending a maintenance page if the pool/pools are down. Please see below.   Code when HTTP_REQUEST { if { [class match [string tolower [HTTP::host]] equ...
application delivery
iRules
Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Feb 06, 2017

Hi Pierrejn,

the iRule below is a combination of your two dedicated iRules...

when HTTP_REQUEST { 
    set VSPool [class match -value [string tolower [HTTP::host]] equals _http_pools]
    if { $VSPool ne "" } then {
        if { [active_members $VSPool] > 0 } then {
            pool $VSPool
        } else {
            log local0. "Client [IP::client_addr] requested [HTTP::uri] no active nodes available..."
            HTTP::respond 200 content "

    
        
        We'll be back!
        
    
    
        
            IMPORTANT MESSAGE 
            
            Please be advised that we are performing a scheduled maintenance on the site you are trying to access.  All site access will be unavailable during this maintenance.  Service is expected to resume February 4 at 5 a.m. CT 
        
    
"

        }
    } else {
         Unknown HOST-Name requested...
    }
}

Note: Updated the post to correct a formating glitch...

Cheers, Kai