Possibility of mixing load balancers ?

[jep]

Hello,

Is it possible to mix different balancers in the same VirtualHost. I mean using mod_cluster with proxy_balancer as follow:

<VirtualHost *:80>

     ServerName  XXX.XXX.XXX

    .....................................

     <Proxy balancer://ags_cluster>

         # You can load balance over just one server and still utilize the benefit of the caching

         BalancerMember http://gis2008-gpu1:8399 route=ags_worker1 loadfactor=50 keepalive=on

         BalancerMember http://gis2008-gpu2:8399 route=ags_worker2 loadfactor=50 keepalive=on

         ProxySet lbmethod=byrequests

    </Proxy>

    .....................................

    <Location /arcgis/>

        ProxyPass balancer://ags_cluster/arcgis/

    </Location>

    .....................................

    # === Everything else should go to the JBoss balancer

    ProxyPass /  balancer://jboss_cluster  stickysession=JSESSIONID  nofailover=Off

    .....................................

Thanks,

JeP

[jfclere]

mod_proxy_balancer can't be used with mod_cluster. So that won't work for the moment.

[jep]

Thank you for your reply.

In fact I'd like to use a httpd Apache web server (on server 1) to load-balance:

a) 2 JBoss AS with mod_cluster (server 2 and 3)

b) 2 httpd Apache web servers (server 2 and 3)

c) 2 ArcGIS Server (middlewares deployed with Tomcat, see here) (server 2 and 3)

How could I achieve this ? Do I have to get rid of "mod_cluster" and use only "proxy_balancer" ?

Best,

JeP

[jfclere]

You can't.

For the

c) 2 ArcGIS Server (middlewares deployed with Tomcat,

it would be possible to use mod_cluster (2 jars + some configuration).

For the

b) 2 httpd Apache web servers

that is not possible: you would need a module that sends mcmp messsage to the front-end. Such a module doesn't exist yep but would be easy to create (JIRA?).

[jep]

Thank you for your reply,

so I'm stuck to "mod_proxy_balancer" for now.

Best,

JeP