Load balancing fails -- Session replication

[zorzella]

Hi,

I've successfully set up a cluster of two jboss 3.2.0 boxes A & B running my app.ear. Everything works fine, AFAICT. Then I setup a third box with JK2+Apache for load-balancing, and now I get, for each request, a different server.

It seems the Session Replication is not working. If I try to login into the application, the first request ('/Login") goes to A, the user is registered with the session, and redirected to "/MyApp" page, which is sent to "B". "B" looks up the Session, and does not find the user there, and redirects it to "A" (all my app pages are "login" protected). And, yes, I do have "instant" as my replication mode.

I would setup "sticky" sessions, so the load balancer would always send requests to the same node, but I can't make it work with JK2 (any help in that would be awesome, BTW).

Check the relevant code below.

Thanks a lot!

Zorzella

When logging in:

HttpSession session = request.getSession ();
session.setAttribute (USER_KEY, value);

Then, to check if the user is logged in:

if (request.getSession ().getAttribute (USER_KEY) != null)
return true;

[slaboure]

Have you taken a look at the latest clustering doco? there is a full step-by-step procedure on how to setup this scenario. Have you activated clustering in your web.xml file?

[zorzella]

My bad -- I had turned it (the distributable flag) off for some tests, and then I forgot to turn it back on. It works like a charm.

[slaboure]

Great. And thank you for posting positive feedback as well: we frequently have questions, we give answer and never now if that was successful or not.

Cheers,


sacha