Nginx + Unicorn + Rails ref: http://qiita.com/Qiuqiu/items/7bda50ca4a6777f02272

file2.txt

$ brew install nginx
$ cd /usr/local/etc/nginx
$ cp nginx.conf.default nginx.conf
$ cp nginx.conf nginx.conf.YYYYMMDD
$ vi nginx.conf

nginx.conf

upstream unicorn {
        # nginxとunicornの連携
        # unicorn.rbで設定したunicorn.sockを指定
        server unix:{RAILS_PROJECT_ROOT}/tmp/unicorn.sock;
    }

server {
        listen 8081;
        server_name {PROJECTDOMAIN_FOR_LOCAL};

        root {RAILS_PROJECT_ROOT}/public;

        access_log /usr/local/var/log/nginx/{PROJECT_NAME}_access.log;
        error_log /usr/local/var/log/nginx/{PROJECT_NAME}_error.log;

        client_max_body_size 100m;
        error_page 500 502 503 504 /500.html;

        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;
        }
    } 

server_restart.sh

nginx
nginx #sudo必要

unicorn.rb

Unicornのログ出力先を指定
#File.expand_pathはパスを絶対パスに解決するメソッド File.expand_path: https://ruby-doc.org/core-2.2.0/File.html#method-c-expand_path
rails_root = File.expand_path('../../', __FILE__)
#ワーカー数を指定する
worker_processes 2
working_directory rails_root

listen "#{rails_root}/tmp/unicorn.sock" #？？「Unicornのプロセスをlistenするアドレストポートを指定」らしいが…
pid "#{rails_root}/tmp/unicorn.pid" #pid fileの位置を指定する

#ログの出力先を指定
stderr_path "#{rails_root}/log/unicorn_error.log"
stdout_path "#{rails_root}/log/unicorn.log"