Forum Discussion

sandiksk's avatar
sandiksk
Icon for Nimbostratus rankNimbostratus
May 08, 2024

redirect not working

I have below scenario works without redirect if statement . when i add the if statement for uri redirect getting a reset.   when HTTP_REQUEST { if { [HTTP::uri] starts_with "/" } {    HTTP::redir...
application delivery
irule
LTM
sandiksk's avatar
sandiksk
Icon for Nimbostratus rankNimbostratus

Thanks for your response , above logic works only when pool1 members are not equal to zero then simply it goes to uri redirect ,but when the else condition is met and traffic is going to pool2 , i even want the HTTP::redirect "https://[HTTP::host]/testpage". If I apply If for pool2 too its not working .Can you assist me.

Paulius's avatar
Paulius
Icon for MVP rankMVP
May 09, 2024

If that's the case then your original iRule with the "==" correction on the URI match should work. I have also made some formatting changes as well so I would use the iRule in this comment.

when HTTP_REQUEST priority 500 {

    if { [HTTP::uri] == "/" } {
        HTTP::redirect "http://[HTTP::host]/testpage"
    }
    
    if { [active_members pool1] == 0 } {
        if { ( ( [class -- match [IP::client_addr] == "whitelist"] ) && ( [active_members pool2 ] > 0 ) ) } {
            pool pool2
        } else {
            HTTP::respond 503 content [ifile get "applicationdown.html"]
        }
    }

}

 

  • sandiksk's avatar
    sandiksk
    Icon for Nimbostratus rankNimbostratus
    May 09, 2024

    redirect is working as expected but when both pools are down i dont see traffic going to HTTP::respond 503 content [ifile get "applicationdown.html"] . I get connection reset can't reach the page. 

     


    when HTTP_REQUEST priority 500 {

        if { [HTTP::uri] == "/" } {
            HTTP::redirect "https://[HTTP::host]/testpage"
        }
        
        if { [active_members pool1] == 0 }{
    if { ( ( [class match [IP::client_addr] eq "whitelist"] ) && ( [active_members pool2 ] > 0 ) ) }
    { pool     pool2
      }
      else { 
    log local0. "applicationdown"
           HTTP::respond 503 content [ifile get "applicationdown.html"]
      }
      }
      }

     

     

    lb err tmm[31148]: 01220001:3: TCL error: /Common/applicationdown-irule <HTTP_REQUEST> - Operation not supported. Multiple redirect/respond invocations not allowed (line 1)     invoked from within "HTTP::respond 503 content [ifile get "applicationdown.html"]"
    lb err tmm[31148]: 01220001:3: TCL error: /Common/applicationdown-irule <HTTP_REQUEST> - Operation not supported. Multiple redirect/respond invocations not allowed (line 10)     invoked from within "HTTP::respond 503 content [ifile get "applicationdown.html"]"

    • Paulius's avatar
      Paulius
      Icon for MVP rankMVP
      May 09, 2024

      In the iRule you posted it seems you have a few syntax issues. Try copying the following iRule and see if your issue is resolved.

      when HTTP_REQUEST priority 500 {

    if { [HTTP::uri] == "/" } {
        HTTP::redirect "https://[HTTP::host]/testpage"
    }
    
    if { [active_members pool1] == 0 } {
        if { ( ( [class -- match [IP::client_addr] == "whitelist"] ) && ( [active_members pool2 ] > 0 ) ) } {
            pool pool2
        } else {
            log local0. "applicationdown"
            HTTP::respond 503 content [ifile get "applicationdown.html"]
        }
    }

}

       

      • sandiksk's avatar
        sandiksk
        Icon for Nimbostratus rankNimbostratus
        May 09, 2024

        Paulius , thankyou so much for looking into this , but the problem with the above logic is when both the pools are down users still need to get the maintenance page  but when i try accessing the url  abc.test.com   -- I get connection rest page cannot be displayed  when i access  https://abc.test.com/testpage --- it displays me the application down message from the log statement . Dont see any issues with the syntax of the above irule but when both pools are down i see vip is marked down so the else statment is not getting executed i guess.

         

        tmm[31148]: 01220001:3: TCL error: /Common/test-irule <HTTP_REQUEST> - Operation not supported. Multiple redirect/respond invocations not allowed (line 10)     invoked from within "HTTP::respond 503 content [ifile get "applicationdown.html"]"