nginx-sites.conf

  # this can be any application server, not just Unicorn/Rainbows!
  upstream app_server {

    # for UNIX domain socket setups:
    #server unix:/var/run/unicorn.sock fail_timeout=0;

    # for TCP setups, point these to your backend servers
    server localhost:3000 fail_timeout=0;
    # server 192.168.0.8:8080 fail_timeout=0;
    # server 192.168.0.9:8080 fail_timeout=0;
  }

  server {
    listen 80 default deferred; # for Linux

    client_max_body_size 4G;
    server_name _;
    keepalive_timeout 5;

    # path for static files
    root /var/www/helpy/public;
    try_files $uri/index.html $uri.html $uri @app;

    location @app {
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $http_host;
      proxy_redirect off;
      proxy_pass http://app_server;
    }

    # Rails error pages
    error_page 500 502 503 504 /500.html;
    location = /500.html {
      root /var/www/helpy/public;
    }
  }