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copied!<p>You mentioned load balancing- so presumably you want to be able to add more Application Servers that are served through a single address. I hope they are stateless or storing session information in a database. You can use Apache to serve as a reverse proxy load balancer with <code>mod_proxy_balancer</code>. Docs are <a href="http://httpd.apache.org/docs/2.2/mod/mod_proxy_balancer.html" rel="nofollow noreferrer">here</a>.</p> <p>Here's an example of what to add to your httpd.conf from <a href="http://blog.innerewut.de/2006/4/21/scaling-rails-with-apache-2-2-mod_proxy_balancer-and-mongrel" rel="nofollow noreferrer">this link</a>.</p> <pre><code> <Proxy balancer://myclustername> # cluster member 1 BalancerMember http://192.168.0.1:3000 BalancerMember http://192.168.0.1:3001 # cluster member 2, the fastest machine so double the load BalancerMember http://192.168.0.11:3000 loadfactor=2 BalancerMember http://192.168.0.11:3001 loadfactor=2 # cluster member 3 BalancerMember http://192.168.0.12:3000 BalancerMember http://192.168.0.12:3001 # cluster member 4 BalancerMember http://192.168.0.13:3000 BalancerMember http://192.168.0.13:3001 </Proxy> <VirtualHost *:80> ServerAdmin info@meinprof.de ServerName www.meinprof.de ServerAlias meinprof.de ProxyPass / balancer://meinprofcluster/ ProxyPassReverse / balancer://meinprofcluster/ ErrorLog /var/log/www/www.meinprof.de/apache_error_log CustomLog /var/log/www/www.meinprof.de/apache_access_log combined </VirtualHost> </code></pre>

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