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puluck's avatar
puluck
Icon for Cirrus rankCirrus
Sep 10, 2016

irule for load balance traffic based on query string

Hello team ,   I am looking for irule to loadbalance traffic based on query string from host header .For example   www.example.com?silo=1 this particluar request need to go to webserever 1 of ...
application delivery
LTM
Stanislas_Piro2's avatar
Stanislas_Piro2
Icon for Cumulonimbus rankCumulonimbus
Sep 10, 2016

Hi,

this irule read the server in the query parameter and search it's IP in the static::web servers array

when RULE_INIT {
    array set static::webservers {
        1   1.1.1.1
        2   1.1.1.2
        3   1.1.1.3
    }
}

when CLIENT_ACCEPTED { 
    set default_pool [LB::server pool]
}

when HTTP_REQUEST {
    set target_member [URI::query [HTTP::uri] silo]
    if {!($target_member eq "") && [info exists static::webservers($target_member)} {
        pool $default_pool member $static::webservers($target_member)
    }
}