Forum Discussion

kmtmt_51646's avatar
kmtmt_51646
Icon for Nimbostratus rankNimbostratus
Oct 04, 2012

Request URL matching by Data Group

Dear forum members,

 

 

It's my first time to play with Data Group. I created it from GUI like follows:

 

========

 

ltm data-group internal /Common/addresslist {

 

records {

 

address1 {

 

data www.abc.com

 

}

 

address2 {

 

data www.abcd.com

 

}

 

address3 {

 

data www.abcde.com

 

}

 

}

 

type string

 

}

 

========

 

 

and my iRule looks like this:

 

========

 

when HTTP_REQUEST {

 

if { [class match [HTTP::host] equals addresslist] }{

 

pool pool-1

 

return

 

}

 

}

 

========

 

 

I access to Virtual Server with hostname www.abc.com or www.abcd.com but it's not sent to the pool-1 at all.

 

pool-1 is accessble when I don't use this iRule, so the issue should be on the iRule or Data Group... Does anyone have a clue?

 

 

 

 

Thank you in advance,

 

 

application delivery
dev
devops
iRules
  • What_Lies_Bene1's avatar
    What_Lies_Bene1
    Icon for Cirrostratus rankCirrostratus
    Oct 04, 2012
    Try this instead. I think 'equals' won't work because of the string name and value pairing; 

    
when HTTP_REQUEST {
      if { [class match [string tolower [HTTP::host] contains addresslist]] } {
        pool pool-1
        return
    }
 }
  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Oct 04, 2012
    e.g. 

    root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm virtual bar
ltm virtual bar {
    destination 172.28.19.252:80
    ip-protocol tcp
    mask 255.255.255.255
    pool foo
    profiles {
        http { }
        tcp { }
    }
    rules {
        myrule
    }
    snat automap
    vlans-disabled
}
root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm data-group internal addresslist
ltm data-group internal addresslist {
    records {
        www.abc.com { }
        www.abcd.com { }
        www.abcde.com { }
    }
    type string
}
root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm rule myrule
ltm rule myrule {
    when HTTP_REQUEST {
   set host [HTTP::host]
   if {[class match -- $host equals addresslist]} {
      pool pool-1
   }
}
when SERVER_CONNECTED {
   log local0. "[IP::client_addr]:[TCP::client_port] | $host | [LB::server pool]"
}
}

[root@ve11a:Active:Changes Pending] config  tail -f /var/log/ltm
Oct  4 21:58:35 tmm info tmm[9895]: Rule /Common/myrule : 172.28.19.251:36481 | www.abc.com | /Common/pool-1
Oct  4 21:58:52 tmm info tmm[9895]: Rule /Common/myrule : 172.28.19.251:36482 | www.other.com | /Common/foo
Oct  4 21:58:57 tmm info tmm[9895]: Rule /Common/myrule : 172.28.19.251:36483 | www.abcd.com | /Common/pool-1
Oct  4 21:58:59 tmm info tmm[9895]: Rule /Common/myrule : 172.28.19.251:36484 | www.abcde.com | /Common/pool-1
Oct  4 21:59:03 tmm info tmm[9895]: Rule /Common/myrule : 172.28.19.251:36485 | www.xyz.com | /Common/foo
  • kmtmt_51646's avatar
    kmtmt_51646
    Icon for Nimbostratus rankNimbostratus
    Oct 05, 2012
    Hi What Lies Beneath san

     

     

    Thank you for your comment!

     

    I tested to change "equals" to "contains" but didn't work, the cause was my data group itself.

     

     

    But I really liked the idea of make strings lower case, so I figure the rule out shown below:

     

    =====

     

    if {[class match -- [string tolower $host] equals addresslist]} {

     

    =====

     

     

  • kmtmt_51646's avatar
    kmtmt_51646
    Icon for Nimbostratus rankNimbostratus
    Oct 05, 2012
    Hi nitass,

     

     

    Thank you for your example!

     

    Now I know I made a mistake on how to create data group, so I fixed it and set "--" option after class match then it started working.

     

     

    I really appreciate it.

     

     

     

    Sincerely,

     

     

    kmtmt