Existing connexion on Apache and mod_proxy_balancer don't fail over second JBoss node

Posted by Jean-Rémy Revy on Server Fault See other posts from Server Fault or by Jean-Rémy Revy
Published on 2012-09-24T12:00:53Z Indexed on 2012/11/01 11:03 UTC
Read the original article Hit count: 446

Filed under:

apache2

|

load-balancing

|

jboss

|

mod-proxy-ajp

|

mod-proxybalance

I have a Jboss farm, load balanced by Apache HTTP + mod_proxy_balancer and mod_proxy_ajp, with the following configuration :

<VirtualHost *:80>

    ServerName web-gui-acceptance.myorg.com
    ServerAlias web-gui-acceptance


    ProxyRequests Off
    ProxyPass /web-gui balancer://jbosscluster/web-gui stickysession=JSESSIONID nofailover=On
    ProxyPassReverse /web-gui http://srvlnx01.myorg.com:8080/web-gui
    ProxyPassReverse /web-gui http://srvlnx02.myorg.com:8080/web-gui

    <Proxy *>
      AuthType Kerberos
      [...]
    </Proxy>

    <Proxy balancer://jbosscluster>
        BalancerMember ajp://srvlnx01.myorg.com:8009 route=SRVLNX01_node1
        BalancerMember ajp://srvlnx01.myorg.com:8009 route=SRVLNX02_node1
        ProxySet lbmethod=byrequests
    </Proxy>

</VirtualHost>

When the first JBoss node fail (the hosting VM is down), my existing connexions don't fail over the second node ... the fist route is keeped (in table / .shm ?) and that provide me 503 errors.

Can someone tell me what I missed ?

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