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Tokyo_Jihen_931's avatar
Tokyo_Jihen_931
Icon for Nimbostratus rankNimbostratus
Dec 03, 2010

iRule for URL persistence

Hello all,

 

 

I am a newbie of iRules programming. My system is BIG-IP 9.1.2. I am trying to implement persistence using a string that appear in URL.

 

 

 

For example.

 

 

http://test.big-ip.com/install/123456

 

 

http://test.big-ip.com/scripts/456788

 

 

 

I want the system when seeing the identifier (e.g. 123456, 456788) in the URL, it will use that identifier to persist my traffic to my nodes.

 

 

The identifier is always contains 6 characters and should be after the string "install/" or "scripts/"

 

 

 

Does anyone have similar environment with me? Or can provide me any iRule sample to do this?

 

 

 

 

Thanks

 

application delivery
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  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jan 10, 2012
    can you try this? 

    [root@ve1023:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.19.79:80
   ip protocol 6
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve1023:Active] config  b pool foo list
pool foo {
   members 200.200.200.101:80 {}
}
[root@ve1023:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
        if {[scan [HTTP::uri] {%*[^&]&clientIP=%[^?]} session_id] == 1} {
                log local0. "\[HTTP::uri\]: [HTTP::uri]"
                log local0. "session_id: $session_id"
                persist uie $session_id 1800
        }
}
}

[root@ve1023:Active] config  b persist show all
No Persistence Table Entries were found.

[root@ve1023:Active] config  curl -I http://172.28.19.79/
HTTP/1.1 200 OK
Date: Tue, 10 Jan 2012 04:26:36 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Fri, 11 Nov 2011 14:48:14 GMT
ETag: "4183e4-3e-9c564780"
Accept-Ranges: bytes
Content-Length: 62
Set-Cookie: BROWSER=MOZILLA%20INTERNET_EXPLORER%20CHROME; path=/
Content-Type: text/html; charset=UTF-8

[root@ve1023:Active] config  b persist show all
No Persistence Table Entries were found.

[root@ve1023:Active] config  curl -I 'http://172.28.19.79/ebv/rbv&clientIP=192.168.1.5?svk'
HTTP/1.1 404 Not Found
Date: Tue, 10 Jan 2012 04:26:55 GMT
Server: Apache/2.2.3 (CentOS)
Content-Type: text/html; charset=iso-8859-1

[root@ve1023:Active] config  b persist show all
PERSISTENT CONNECTIONS
|     Mode universal   Value 192.168.1.5
|        virtual 172.28.19.79:80   node 200.200.200.101:80   age 6sec

[root@ve1023:Active] config  tail /var/log/ltm
Jan  9 20:26:42 local/tmm info tmm[26866]: Rule myrule HTTP_REQUEST: [HTTP::uri]: /ebv/rbv&clientIP=192.168.1.5?svk
Jan  9 20:26:42 local/tmm info tmm[26866]: Rule myrule HTTP_REQUEST: session_id: 192.168.1.5