Forum Discussion

Nimbostratus

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...

Nimbostratus

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

MVP

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
Nimbostratus
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"]"
- Paulius
  MVP
  May 09, 2024
  It seems that something could be wrong with the iFile possibly. If you can provide me the contents of the iFile I might be able to test this in my lab and see if I can get it to work.
  - sandiksk
    Nimbostratus
    May 10, 2024
    sent an email with the details ,redirect to maintenance is not needed we need logic only when both the pools are down route the traffic to point to ifile without any uri redirect.
    
    We need uri redirect for the default pool 1, when pool1 is down and traffic is fwded to pool2 based on the condition . In all these scenarios i need HTTP::redirect.