Forum Discussion

meenny_60187's avatar
meenny_60187
Icon for Nimbostratus rankNimbostratus
Mar 29, 2016

iRule load balance based on HTTP header username

I'm trying to modify an existing iRule below by creating a logic where it will parse the username being used, and load balance based on the username, while still using the HTTP::uri command. I know ...
application delivery
iRules
LTM
Yann_Desmarest_'s avatar
Yann_Desmarest_
Icon for Nacreous rankNacreous
Mar 29, 2016
when HTTP_REQUEST { 
    if { [HTTP::uri] equals "/" } { 
        HTTP::uri /login/ 
        pool default 
    } elseif { [HTTP::uri] equals "/" and [HTTP::username] contains "username1" or [HTTP::username] contains "username2" or [HTTP::username] contains "username3" } { 
        HTTP::uri /3dspace/ pool pool1 
    } 
}
  • meenny_60187's avatar
    meenny_60187
    Icon for Nimbostratus rankNimbostratus
    Mar 29, 2016
    Thanks for the response Yann, but it doesn't look like this iRule works. It is not load balancing username1 to pool1. The initial HTTP request will send me to pool default, which shows me a login page of the application, which is fine. However, when I log in with my credentials (i.e. username1), either the LTM does not see anything in the HTTP::username, or I'm not parsing the username string correctly. I'm not sure what is missing here. Any help would be appreciated.
  • Yann_Desmarest_'s avatar
    Yann_Desmarest_
    Icon for Nacreous rankNacreous
    Mar 29, 2016
    If I understand correctly, your authentication process is a web login page. The HTTP::username command get the username from the Basic Authorization header so this irule can't work for you. You have to parse the POST body of the login url to get the username. You can use the command HTTP::payload and HTTP::collect to retrieve the username.