6 Replies Latest reply on Feb 14, 2013 9:22 AM by Nossair Faquihi

    Load balancing : lose of session

    Nossair Faquihi Newbie

      I'm trying to configure a load balancer to AS7. i have an apache 2 and two JBoss AS7.1.0. i think that all work fine, but i have a problem with the session.

      when i turn off  the Jboss who ask the apache request, i louse the session.

      can any bady help me

      thanks a lot

        • 1. Re: Load balancing : lose of session
          Michal Karm Babacek Apprentice

          Hmm, do you get the correct sessionid but for data, or a new sessionid?

          Do you have any exotic ProxyPass settings on httpd?

          It might be either mod_cluster's stickysessions handling or AS7's session replication glitch. Does the behaviour keep repeating even with some simple app?

          • 2. Re: Load balancing : lose of session
            Nossair Faquihi Newbie

            Hmm, do you get the correct sessionid but for data, or a new sessionid?

            i dont look the sessionid. but i have an application where i login with a user and password and i can do any other action but when i turned the Jboss Off, when i click the application forword me to the authentification page.

             

            Do you have any exotic ProxyPass settings on httpd?

            i have no ProxyPass. i have a simple config and this is :

             

            <IfModule ssl_module>

            SSLRandomSeed startup builtin

            SSLRandomSeed connect builtin

            </IfModule>

            # MOD_CLUSTER_ADDS

            # Adjust to you hostname and subnet.

            <IfModule manager_module>

              Listen 192.168.2.140:8796

              ManagerBalancerName mycluster

              <VirtualHost 192.168.2.140:8796>

                <Directory />

                 Order deny,allow

            #     Deny from all

                 Allow from 192.168.2.141,192.168.2.142

                </Directory>

             

                KeepAliveTimeout 300

                MaxKeepAliveRequests 0

                #ServerAdvertise on http://@IP@:6666

                AdvertiseFrequency 5

                #AdvertiseSecurityKey secret

                #AdvertiseGroup @ADVIP@:23364

             

                <Location /mod_cluster_manager>

                   SetHandler mod_cluster-manager

                   Order deny,allow

            #    Deny from all

                   Allow from 192.168.2.141,192.168.2.142,192.168.240.17

                </Location>

             

              </VirtualHost>

            </IfModule>

             

             

             

            It might be either mod_cluster's stickysessions handling or AS7's session replication glitch. Does the behaviour keep repeating even with some simple app?

            i didnt teste it with a simple app

            • 3. Re: Load balancing : lose of session
              Michal Karm Babacek Apprentice

              It occours to me you are probably running some obsolete mod_cluster on the httpd side for I can't see EnableMCPMReceive in your VirtualHost...  What is the version?

              Hmm, can you try clusterbench/requestinfo context with this dead-simple webapp? (If you don't really like running unknown, possibly utterly evil, things on your AS, build this branch yourself)

              Watch the JSESSIONID...

               

              And...just in case :-), is that webapp of yours <distributable/> ?

              • 4. Re: Load balancing : lose of session
                Nossair Faquihi Newbie

                thanks Michal

                i use mod_cluster 1.0.

                 

                and i dont have <distributable/> in my web.xml. i will try it, and i tell you if it fix the prob.

                 

                thank you a lot

                • 5. Re: Load balancing : lose of session
                  Michal Karm Babacek Apprentice

                  Nossair, don't use mod_cluster 1.0. It is a very old thing and a huge amount of work has been done since.

                  Take a decent version from our community web: http://www.jboss.org/mod_cluster/downloads/1-2-0-Final , copy the java part into AS7 (you probably already have that) and put the native part into your httpd.

                   

                  Well, as to the <distributable/>, if your app is not set to replicate sessions, you can not expect to see your data on another cluster node.

                   

                  HTH

                   

                  M

                  • 6. Re: Load balancing : lose of session
                    Nossair Faquihi Newbie

                    thanks a lot Michal, I just add <distributable/> and it work fine

                    thank you