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Leslie_South_55's avatar
Leslie_South_55
Icon for Nimbostratus rankNimbostratus
Oct 17, 2008

Using LB_FAILED and change the URI w/o 302

I am trying to use the 'when LB_FAILED' to send requests a pool just for apologies. The issue is that the requests coming into the VS have crazy long URI strings like '/ABC/def/g/hij/klmno/' and my s...
application delivery
dev
devops
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hooleylist's avatar
hooleylist
Icon for Cirrostratus rankCirrostratus
Oct 20, 2008
Can you try this then? I assume HTTP::referer should work in LB_FAILED if HTTP::uri does, but haven't tested this before. 

 
 when LB_FAILED { 
  
    log local0. "[IP::client_addr]:[TCP::client_port]: Request to pool failed, [LB::server pool]" 
  
     Check if this request was not generated from the maintenance page using the HTTP referer header 
    if {not ([HTTP::header value referer] ends_with "/maintenance_page.html")}{ 
  
       log local0. "[IP::client_addr]:[TCP::client_port]: Referer wasn't the maintenance page.  Rewriting URI to maintenance page." 
       HTTP::uri "/maintenance_page.html" 
    } 
  
     Send request to the apologies pool 
    LB::reselect pool pool_apologies_http 
    log local0. "[IP::client_addr]:[TCP::client_port]: Reselecting member from the apologies pool" 
 }

Aaron