How does Apache mod_proxy_ajp work when Jboss runs as a cluster with AJP on 2 different ports?

Question

I am trying to get an Apache webserver to load balance to a JBoss cluster, but unfortunately, I dont understand how mod_proxy_ajp works through the load balanced scenerio, since each of the 2 instances of JBoss run AJP on a different port. Since I specify my ProxyPass rule using only one of the ports, what ends up happening is that all the traffic goes through only one of the instances (that I specified using my ProxyPass rule).

<Location /jconsole>  
    # somehow I need this to also load balance to port AJP localhost:8209
    ProxyPass ajp://localhost:8109/jconsole
    ProxyPassReverse ajp://localhost:8109/jconsole
</Location>

Any help I could get would be great.

Decado · Accepted Answer · 2011-05-05T06:28:53.230

2

In this case you need to configure a balancer.

<Proxy balancer://mycluster>
  BalancerMember ajp://localhost:8109/jconsole
  BalancerMember ajp://localhost:8110/jconsole
</Proxy> 

<Location /jconsole>  
  ProxyPass balancer://mycluster/ stickysession=JSESSIONID|jsessionid nofailover=On
</Location>

More options can be found at the apache documentation at http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypass.

edited May 05 '11 at 06:28

answered May 03 '11 at 06:50

Decado

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1

Thanks very much. You might want to edit your answer though: the Proxy directive cannot be inside the Location directive. – djangofan May 04 '11 at 23:50
Change done as requested. – Decado May 05 '11 at 06:29

How does Apache mod_proxy_ajp work when Jboss runs as a cluster with AJP on 2 different ports?

1 Answers1