iRule for setting pool based on URI path

Try this, it will check to see if you have a pool created that matches the http hostname_pool and if not go to your default pool. If it does it will go to the corresponding pool.

when HTTP_REQUEST {
    if { [getfield [HTTP::host] "." 1] ends_with "tr"}{
        if { [catch {pool [string tolower "[HTTP::host]_pool"]}] }{
            pool "default_pool"
        }
        else {
            pool [string tolower "[HTTP::host]_pool"]
        }
    }
}

Updated.

Try this, it will check to see if you have a pool created that matches the http hostname_pool and if not go to your default pool. If it does it will go to the corresponding pool.

when HTTP_REQUEST {
    if { [getfield [HTTP::host] "." 1] ends_with "tr"}{
        if { [catch {pool [string tolower "[HTTP::host]_pool"]}] }{
            pool "default_pool"
        }
        else {
            pool [string tolower "[HTTP::host]_pool"]
        }
    }
}

Updated.

Hmmm, I'm not using default pools which I assume is why I got the error that it doesn't know what the default_pool is.

Also however, I don't see any thing in that logic that is looking for the "tr" delineation.

I'm may have the misunderstood but this will to route to pool prepended with hostname if the uri starts with /tr

when HTTP_REQUEST {
  if { [HTTP::uri] starts_with "/tr" } {
    scan [HTTP::host] {%[^.]} host_pool   
    pool ${host_pool}tr.domain.com
  }
}

You have the getfield string and split round the wrong way 🙂 but the getfield option looks good;

when HTTP_REQUEST {
  if { [HTTP::uri] starts_with "/tr" } {   
    pool [getfield [HTTP::host] "." 1 ]tr.example.com
  }
}