Nginx + Unicorn + RailsでWebアプリを構築する

upstream unicorn {
    server unix:/opt/app/tmp/sockets/unicorn.sock;
}
server {
    listen 80;
    server_name  localhost;
    root /opt/app/public;
    try_files $uri/index.html $uri @unicorn;

    location @unicorn {
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $http_host;
      proxy_pass http://unicorn;
    }

    error_page 500 502 503 504 /500.html;
    error_page 404 /404.html;
}

# -*- coding: utf-8 -*
application = "app"
working_directory = "/opt/app/"

worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
timeout 15
preload_app true

listen "/opt/app/tmp/sockets/unicorn.sock"
pid "/opt/app/tmp/sockets/unicorn.pid"

# ログの出力
stderr_path File.expand_path('log/unicorn.log', ENV['RAILS_ROOT'])
stdout_path File.expand_path('log/unicorn.log', ENV['RAILS_ROOT'])