nginx.conf

# For more information on configuration, see:
#   * Official English Documentation: http://nginx.org/en/docs/
#   * Official Russian Documentation: http://nginx.org/ru/docs/

user  nginx;
worker_processes  4;

error_log  /var/log/nginx/error.log;
#error_log  /var/log/nginx/error.log  notice;
#error_log  /var/log/nginx/error.log  info;

pid        /var/run/nginx.pid;


events {
    use epoll;
    worker_connections  1024;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  5;

    proxy_redirect   off;
    proxy_set_header Host               $host;
    proxy_set_header X-Forwarded-For    $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Host   $host;
    proxy_set_header X-Forwarded-Server $host;
    proxy_set_header X-Real-IP          $remote_addr;
    proxy_http_version 1.1;
    proxy_set_header Connection '';

    #gzip  on;

    # Load modular configuration files from the /etc/nginx/conf.d directory.
    # See http://nginx.org/en/docs/ngx_core_module.html#include
    # for more information.
    include /etc/nginx/conf.d/*.conf;

    #index   index.html index.htm;

    upstream supervisord {
       #server localhost:5000;
       server unix:/tmp/unicorn.sock;
       keepalive 60;
    }

    server {
        listen       80;
        server_name  _;
        root         /home/isucon/webapp/public;

        #charset koi8-r;

        #access_log  /var/log/nginx/host.access.log  main;

        location / {
            if (!-f $request_filename) {
                proxy_pass http://supervisord;
                break;
            }
        }
        
                # redirect server error pages to the static page /40x.html
        #
        #error_page  404              /404.html;
        #location = /40x.html {
        #}

        # redirect server error pages to the static page /50x.html
        #
        #error_page   500 502 503 504  /50x.html;
        #location = /50x.html {
        #}

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;
    #    root         html;

    #    location / {
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443;
    #    server_name  localhost;
    #    root         html;

    #    ssl                  on;
    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_timeout  5m;

    #    ssl_protocols  SSLv2 SSLv3 TLSv1;
    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers   on;

    #    location / {
    #    }
    #}

}

unicorn_config.rb

# ワーカーの数を指定する
worker_processes 10

# ダウンタイムなくすため、アプリをプレロード
preload_app true

# ソケット
# listen 80
# listen "127.0.0.1:3000"
listen  '/tmp/unicorn.sock'

# pidを保存するファイル
# before_fork, after_forkなどで、
# Unicornのプロセスがフォークする前後の挙動をしていするときに使う
# pid "/tmp/pids/unicorn.pid"

# ログのディレクトリは作っておく
# $ mkdir
# $ chmod 755
# unicornは標準出力には何も吐かないのでログ出力を忘れずに
stderr_path "/tmp/log/unicorn.stderr.log"
stdout_path "/tmp/log/unicorn.stdout.log"