title: Setup Apache reverse-proxy for rails app running at port 3000
body: <p>I manage a small VPS running several PHP/MySQL websites. It's running CentOS (albeit a slightly modified VSP version x86). All is working well.
  However, now I would like to run a Rails 3 application on a certain domain hosted on my VPS. The thing is, the application requires Rails 3 which isn't yet supported by cPanel. 
  If I ssh to the server and run <code>rails s</code> in the app's folder it runs smoothly, and I can access it at <code>siegedog.com:3000</code>. However, I would like to redirect all requests to <code>siegedog.com</code> to port 3000.</p>
  
  <p>I've read that this would assume setting up a reverse proxy that would redirect all the requests it gets for siegedog to Mongrel, which should be running on port 3000. I've checked out a lot of tutorials but most of them were confusing and/or quite out-of-date.</p>
  
  <p>I have also tried Passenger. However, editing my httpd.conf is disallowed by cpanel. So I used a separate file that gets included there and added the extra configuration parameters in a remote file, only to get the <code>Default server page</code> problem, and no errors in the apache error log.</p>