iRules, URL Routing and Cookie Persistance

Hi all,

 

 

I've got a similar issue to the original poster.

 

 

I've writen an iRule which directs the client to the relevant pool based on URI however I'd also like them to persist once they get to that pool.

 

 

So far I've tried all the peristence methods, persistence records ARE being inserted in to the persistence table however whenever the client returns and the persistence is still valid, it's ignored, they are round robined to a new server and get a new persistence record.

 

 

Please could anyone shed any light on this, kinda tearing my hair out!!

 

 

 

Further info:

 

 

Datastore contents:

 

 

URIA!xxxx-80_pool!cookie!hash MYCOOKIE

 

 

Persistence table contents (this shows an initial connections and then a further request getting a new persistence record):

 

 

[root@myloadbalancer:Active] config b persist pool xxxx-80_pool show all

 

PERSISTENT CONNECTIONS --

 

Mode: cookie Value: VpHyJlKJdk

 

Virtual: 10.1.1.1:http Node: 10.2.2.2:12346 Age: 1sec

 

 

Mode: cookie Value: JlK8JlKLzs

 

Virtual: 10.1.1.1:http Node: 10.2.2.2:12346 Age: 6sec

 

 

iRule in question:

 

 

when HTTP_REQUEST {

 

 

parse the URI for the content provider, this is the first key

 

set content_provider [lindex [split [HTTP::uri] "/"] 1]

 

 

find the content provider in the data group

 

set idx [matchclass $::xxxx_httpuri_datastore contains $content_provider]

 

log "idx=$idx"

 

 

check if the content provider is in the conf

 

if {$idx > 0}{

 

if it is let's dance

 

set cfg [lindex $::xxxx_httpuri_datastore [expr $idx - 1]];

 

 

set lbpool [lindex [split $cfg "!"] 1];

 

set permethod [lindex [split $cfg "!"] 2];

 

set perargs [lindex [split $cfg "!"] 3];

 

 

if {$permethod equals "cookie"}{

 

persist cookie [lindex [split $perargs " "] 0] [lindex [split $perargs " "] 1];

 

use pool $lbpool;

 

} else {

 

persist $permethod;

 

use pool $lbpool;

 

}

 

 

} else {

 

content provider not in conf, drop connection

 

log "Sorry, Rejecting $content_provider not in conf."

 

reject

 

}

 

}