title: 403 Forbidden when using nginx + rails + passenger
body: <p>I am getting a 403 when I try to access my rails app running on top of nginx and passenger. Here is the error from the log file: </p>
  
  <pre><code>2013/05/09 13:52:34 [error] 27787#0: *1 directory index of "/var/www/Tread-Forth/current/public/" is forbidden, client: 192.249.16.60, server: treadforth.com, request: "GET / \
  HTTP/1.1", host: "www.treadforth.com"
  </code></pre>
  
  <p>This problem occurs even when I run nginx as root, so I don't think it is a permissions problem. I think the problem is that I do not have <code>passenger_ruby</code> or <code>passenger_root</code> defined in my nginx.conf file. The problem is, I don't know where these values go in the config file, and I don't know what their values should be. Any help would be great. Here is my conf file for reference:</p>
  
  <pre><code>worker_processes  1;
  
  events {
      worker_connections  1024;
  }
  
  
  http {
      #passenger_root /usr/local/bin/passenger;
      #passenger_ruby /usr/local/bin/ruby;
  
      include       mime.types;
      default_type  application/octet-stream;
  
      sendfile        on;
  
      keepalive_timeout  65;
  
      server {
          listen       80;
          server_name  .treadforth.com;
          root /var/www/Tread-Forth/current/public;
          passenger_enabled on;
      }
  }
  </code></pre>
  
  <p>You can see the commented out version of passenger_root and passenger_ruby I have tried. When I uncomment these, nginx fails to start but does not produce any error messages. </p>