title: multiple rails apps on nginx and unicorn
body: <p>I successfully setup a rails site using the Screencast 335 deploy to a VPS tutorial. Now I want to add another rails app on a new domain but I am confused about the steps required.</p>
  
  <p>In the above setup, there are no changes to sites-available or /etc/nginx/nginx.conf. The only configuration is in unicorn.rb, unicorn_init.sh and nginx.conf in my apps config directory. The nginx.conf file looks like this:-</p>
  
  <pre><code>upstream unicorn {
    server unix:/tmp/unicorn.my_app.sock fail_timeout=0;
  }
  server {
    listen 80 default deferred;
    # server_name my_app.com.au www.my_app.com.au;
    root /var/www/my_app/current/public;
    location ^~ /assets/ {
      gzip_static on;
      expires max;
      add_header Cache-Control public;
    }
    try_files $uri/index.html $uri @unicorn;
    location @unicorn {
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $http_host;
      proxy_redirect off;
      proxy_pass http://unicorn;
    }
    error_page 500 502 503 504 /500.html;
    client_max_body_size 4G;
    keepalive_timeout 10;
  }
  </code></pre>
  
  <p>In my Capistrano recipe I have this line</p>
  
  <pre><code>sudo "ln -nfs #{current_path}/config/nginx.conf /etc/nginx/sites-enabled/#{application}"
  </code></pre>
  
  <p>Is adding a second domain merely a matter of removing default deferred after listen and un-commenting the server_name section then repeating this config file with a different upstream socket name and server name for the second app? Will that work or do I need to transfer this file to sites-available and create a symbolic link to sites-enabled?</p>