gistfile1.txt

upstream unicorn {
  server unix:/u/apps/something/shared/sockets/unicorn.sock;
}
 
server {
  listen       80;
  server_name  something.com;
  access_log  /u/apps/something/current/log/access.log  main;
  error_log   /u/apps/something/current/log/error.log  error;
 
  client_max_body_size 50m;
 
  root /u/apps/something/current/public;

location @unicorn {
  proxy_pass http://unicorn;
  proxy_set_header X-Forwaded-For $proxy_add_x_forwaded_for;
  proxy_set_header X-Real-IP $remote_addr;
}

location @something {
  root /u/apps/something/current/public;
}
  location / {
  try_files $uri $uri/ @unicorn;
  }
     if (-f $document_root/system/maintenance.html) {
      rewrite  ^(.*)$  /system/maintenance.html last;
      break;
    }
  error_page   500 502 503 504  /500.html;
  error_page   404  /404.html;
 
  location = /500.html {
    try_files @something
  }
}