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Forum Discussion

norrtom_376408's avatar
norrtom_376408
Icon for Nimbostratus rankNimbostratus
Nov 21, 2018

Can someone help me with iRule redirects?

Hi All! I am new to F5 and iRules. I'm helping out a client of mine to do redirections. I understand that if I want to redirect several URL's from an old domain to a new one, i will do as this: ...
cloud
devops
irule redirection
iRules
Lee_Sutcliffe's avatar
Lee_Sutcliffe
Icon for Nacreous rankNacreous
Nov 21, 2018

Hi Tom,

Your iRule looks ok and would do the job but there's a bit of repetition. I would check the host header first and do it once, then use a switch statement for all your static redirects. As for your 'wildcard' redirect, you can extract the numbers using 

getfield
and simply add it as a variable to the end of your redirect. 

when HTTP_REQUEST {
    set newHost "www.new-example.com"
    if {[string tolower [HTTP::host]] eq "www.old-example.com"} {
       switch -glob [string tolower [HTTP::uri]] {
           "/my-old-path/page-y" {
               HTTP::respond 301 Location "https://${newHost}/new-path/page-x"
            }
           "/my-old-path-2/page-zz" {
               HTTP::respond 301 Location "https://${newHost}/new-path-2/page-zzy"
           }
           "/my-old-path-n/old-page-n" {
               HTTP::respond 301 Location "https://${newHost}/new-path-n/new-page-n"
           }
           "/the/old/slug/*" {
                set numbers [getfield [HTTP::uri] / 5]
                HTTP::respond 301 Location "https://${newHost}/my/new/url/$numbers"
           }
       }
    }
}

Let me know how you get on.

Lee