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D_J__Mudde_1907's avatar
D_J__Mudde_1907
Icon for Nimbostratus rankNimbostratus
Apr 06, 2016

redirect to specific pool based on host

Hi,

 

I am looking for a Irule to redirect trafic to a specific pool based on the incomming http request host.

 

I have made the following but the Big IP gaves an error.

 

when HTTP_REQUEST { if { [HTTP::host] == "linked.jan.nl" } { pool p_sfb_a } elseif { [HTTP::host] == "lyncdiscover.jan.nl" } { pool p_sfb_a } elseif { [HTTP::host] == "owas.jan.nl" } { pool p_sfb_a } else { pool Pool_none } }

 

Anyone a idea to help me out?

 

The pools are not jet in place.

 

This is the message i get from the big-IP when i tried to save the irule.

01070151:3: Rule [/Common/mzi_sfb_redirect_based_on_host] error: /Common/mzi_sfb_redirect_based_on_host:4: error: [undefined procedure: elseif][elseif { [HTTP::host] == "lyncdiscover.maasstadziekenhuis.nl" } { pool p_sfb_a } ]

 

/Common/mzi_sfb_redirect_based_on_host:10: error: [undefined procedure: else][else { pool Pool_none }]
application delivery
BIG-IP
irule redirection
iRules

3 Replies

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  • Stanislas_Piro2's avatar
    Stanislas_Piro2
    Icon for Cumulonimbus rankCumulonimbus
    Apr 07, 2016

    As proposed by jgranieri, the easiest and best solution is to use Local traffic policies.

    If you want to use irules, the switch command is better than if / then / elseif / elseif ...

    when HTTP_REQUEST {
    switch [HTTP::host] {
        "linked.jan.nl" { pool p_sfb_a }
        "lyncdiscover.jan.nl" { pool p_sfb_b }
        "owas.jan.nl" { pool p_sfb_c }
        default { pool Pool_none }
    }
}
  • Daniel_Varela's avatar
    Daniel_Varela
    Icon for Employee rankEmployee
    Apr 06, 2016

    I just have paid your code in my big-ip and it worked. What version are you using? I'd only change '==' by 'eq' as you expect string to be compare it should be a bit effective.

     

  • jgranieri's avatar
    jgranieri
    Icon for Nimbostratus rankNimbostratus
    Apr 06, 2016

    I recommend you use HTTP Policies in LTM. this basically is a method to make irules like the one your doing very easy in the GUI. I recommend you create a ltm policy with rules for the host value and forward it to a certain pool. Let me know if this helps out.