mod_jk, JSESSION_ID and load-balancing

[Henri Gomez]

Hi to all,

I'm faced a weird problem with a web application who didn't keep JSESSIONID
generated by Apache Tomcat (via jvmRoute).

This application is using ASF Shiro who in turn regenerate its own
JSESSIONID (and replace one from Tomcat).

It completly broke mod_jk/ajp load-balancing and sticky session.

Did some of you allready encountered such problem ?


For mod_jk, could we imagine to add support for another cookie, ie
ROUTE_ID, who will be set by mod_jk and evaluated by its lb worker ?

As temporary fix, I used mod_proxy like this :

   # JkMount /* nexus

   Header add Set-Cookie "ROUTEID=.%{BALANCER_WORKER_
ROUTE}e; path=/" env=BALANCER_ROUTE_CHANGED

    <Proxy balancer://nxcluster>
      BalancerMember      http://nexus1.mycorp.org:8080 route=nx
      BalancerMember      http://nexus2.mycorp.org:8080 route=nx2
      ProxySet stickysession=ROUTEID
    </Proxy>

    ProxyPreserveHost On
    ProxyPass /balancer-manager !
    ProxyPass / balancer://nxcluster/

    <Location /balancer-manager>
      SetHandler balancer-manager
      Order Deny,Allow
      Deny from all
      Allow from localhost
    </Location>

BTW, I'd like to keep jk for this configuration to stay consistent with
other settings.

Thanks for feedbacks.