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djangofan
Asked: 2011-05-03 20:45:05 +0800 CST

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

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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.

apache-2.2 cluster jboss mod-proxy-ajp

1 Answers

  1. Best Answer

    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.

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