Load balancing : lose of session

[fnossair]

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

[mbabacek]

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?

[fnossair]

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

[mbabacek]

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/> ?

[fnossair]

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

[mbabacek]

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

[fnossair]

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

thank you