mod_cluster with multiple VirtualHosts redirected to the same cluster but having different DocumentRoots

[serpikv]

Hello,

I would appreciate help with the following scenario.

We are trying to build the following configuration:

   - we have multiple DNS names, say test1.aaa.com, test2.aaa.com

   - we want all of them to be redirected to the same jBoss cluster

     (if url contains context-root xxx like test1.aaa.com/xxx/... or test2.aaa.com/xxx/...)

   - at the same time we want each DNS to have it's own DocumentRoot

     (so that NOT redirected URLs like test1.aaa.com/index.html and test2.aaa.com/index.html lead to the different pages)

   - we have 2 Apache HTTPD servers (balanced with F5)

   - on the jBoss server side we have:

     <mod-cluster-config advertise-socket="mycluster" proxy-list="10.0.5.51:80,10.0.5.71:80" advertise="false" connector="ajp">

   - on HTTPD side we have (similar configuration for the second server):

   Listen 10.0.5.51:80

   <VirtualHost 10.0.5.51:80>

       DocumentRoot /var/www/html/test1

       ServerName test1.aaa.com

       <Location /xxx>

           Order deny,allow

           Allow from all

       </Location>

       <Location /mod_cluster-manager>

           SetHandler mod_cluster-manager

           Order deny,allow

           Allow from all

       </Location>

       KeepAliveTimeout 60

       MaxKeepAliveRequests 0

       EnableMCPMReceive On

   </VirtualHost>

   <VirtualHost 10.0.5.51:80>

       DocumentRoot /var/www/html/test2

       ServerName test2.aaa.com

       <Location /xxx>

          Order deny,allow

          Allow from all

       </Location>

       <Location /mod_cluster-manager>

          SetHandler mod_cluster-manager

          Order deny,allow

          Allow from all

       </Location>

       KeepAliveTimeout 60

       MaxKeepAliveRequests 0

       EnableMCPMReceive On 

   </VirtualHost>

   - our setting works but is it the right way to achieve what we want?

   - "EnableMCPMReceive On" in both VirtualHost configurations looks excessive as cluster manager for both hosts listens on the same IP/port

[jfclere]

See http://httpd.apache.org/docs/2.2/vhosts/examples.html

mod_cluster directive UseAlias 1  might helps if you have different webapp for the Aliases

[serpikv]

Thanks for your reply.

I understand how to configure multiple VirtualHosts on httpd.

My question is more about mod_cluster configuration in this case.

As all VirtualHosts "redirected" to the same cluster (and at the moment to the same webapps) is it possible to move mod_cluster configuration outside the virtual hosts (kind of on the main server level)? Technically does mod_cluster creates separate "instance" to server each virtual host?

[jfclere]

Usually you need to secure the MCPM receiving in one VirtualHost and the webapps (context) will be available in all VirtualHosts you can use UseAlias to route on Hostname: Alias additionally to just the context.

If you have multiple clusters you can use different balancer for each cluster and ProxyPass in VirtualHost but that is more a static configuration and mod_proxy_balancer is probably what you need.