title: Nginx Passenger restart issue
body: <p>I have passenger and nginx installed on ubuntu 10.04. </p>
  
  <p>this is how my virtual host config looks like.</p>
  
  <pre><code>server {
  listen 80 default;
  server_name www.domain.com;
  root /rails_app/public;
  passenger_enabled on;
  }
  </code></pre>
  
  <p>when i try to start nginx I get the following error.</p>
  
  <pre><code>/etc/nginx/sites-available $ 
  =&gt;sudo service nginx restart
  Restarting nginx: nginx: [emerg] unknown directive "passenger_enabled" in /etc/nginx/sites-enabled/001admin.domain.com:5
  </code></pre>
  
  <p>What Have I missed here. What is the issue?</p>
  
  <p>Thanks
      nginx: configuration file /etc/nginx/nginx.conf test failed</p>