さくらのVPSプラン乗り換え計画(11)

Rails アプリを unicorn で動かす。

unicornのインストールと設定

Gemfile に unicorn を追加。

gem 'unicorn'

インストール。

[root@tk2-254-36564 lathercraft]# bundle install --path vendor/bundle

unicorn の設定ファイルはつぎのようにした。

worker_processes 2
working_directory "/var/www/lathercraft"

listen "/var/run/unicorn/unicorn_lathercraft.sock"
pid "/var/run/unicorn/unicorn_lathercraft.pid"

preload_app true

timeout 1200

/var/run/unicorn ディレクトリを作成。

[root@tk2-254-36564 lathercraft]# mkdir /var/run/unicorn

Nginxの設定

upstream unicorn-lathercraft {
    server unix:/var/run/unicorn/unicorn_lathercraft.sock;
}

server {
    # port
    listen 80;

    # server name
    server_name www2.lathercraft.net;

    # document root
    root /var/www/lathercraft/public;

    # index
    #index index.php index.html index.htm;

    # log files
    access_log /var/log/nginx/www.lathercraft.net/access.log main;
    error_log /var/log/nginx/www.lathercraft.net/error.log warn;

    keepalive_timeout 6000;
    proxy_connect_timeout 6000;
    proxy_read_timeout 6000;
    proxy_send_timeout 6000;

    client_max_body_size 8192M;

    location /kel-mirrors {
        root /var/www/lathercraft/recent/;
        rewrite '^/kel-mirrors(.*)$' $1;
        break;
    }

    location / {
        root /var/www/lathercraft;

        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-lathercraft;
    }
}

ログファイル用のディレクトリを作成。

[root@tk2-254-36564 lathercraft]# mkdir /var/log/nginx/www.lathercraft.net

Nginxの再起動とunicornの起動

Nginx を再起動。

[root@tk2-254-36564 lathercraft]# service nginx restart
Stopping nginx:                                            [  OK  ]
Starting nginx:                                            [  OK  ]

unicorn を起動。

[root@tk2-254-36564 lathercraft]# export SECRET_KEY_BASE=bundle exec rails secret
[root@tk2-254-36564 lathercraft]# bundle exec unicorn_rails -c unicorn.rb -E production
I, [2017-05-05T11:58:43.619697 #13435]  INFO -- : Refreshing Gem list
DEPRECATION WARNING: The configuration option `config.serve_static_assets` has been renamed to `config.serve_static_files` to clarify its role (it merely enables serving everything in the `public` folder and is unrelated to the asset pipeline). The `serve_static_assets` alias will be removed in Rails 5.0. Please migrate your configuration files accordingly. (called from block in  at /var/www/lathercraft/config/environments/production.rb:23)
I, [2017-05-05T11:58:46.475292 #13435]  INFO -- : listening on addr=/var/run/unicorn/unicorn_lathercraft.sock fd=10
I, [2017-05-05T11:58:46.475781 #13435]  INFO -- : worker=0 spawning...
I, [2017-05-05T11:58:46.479485 #13435]  INFO -- : worker=1 spawning...
I, [2017-05-05T11:58:46.481100 #13438]  INFO -- : worker=0 spawned pid=13438
I, [2017-05-05T11:58:46.481436 #13435]  INFO -- : master process ready
I, [2017-05-05T11:58:46.481630 #13438]  INFO -- : worker=0 ready
I, [2017-05-05T11:58:46.482935 #13441]  INFO -- : worker=1 spawned pid=13441
I, [2017-05-05T11:58:46.483183 #13441]  INFO -- : worker=1 ready

さて、これでいいはず。

名前解決

ちゃんと動いているはずだけど、確認するには www2.lathercraft.net の名前解決化できないといけない。これはさくらインターネットのゾーン編集をする。

……結果、無事動いていることを確認。

unicornの自動起動

最後に、OS起動時に unicorn が自動起動するようにしておく。/etc/init.d/unicorn_lathercraft をつぎのようにした。

#!/bin/bash
#
# unicorn_lathercraft Startup script for unicorn.
#
# chkconfig: - 85 15
# description: lathercraft on unicorn start/stop script.
#

set -e
set -u

export PATH=/usr/local/rvm/rubies/ruby-2.3.3/bin:/usr/local/rvm/gems/ruby-2.3.3/bin:$PATH
export RUBYLIB=/usr/local/rvm/gems/ruby-2.3.3:/usr/local/rvm/gems/ruby-2.3.3@global
export GEM_HOME=/usr/local/rvm/gems/ruby-2.3.3:/usr/local/rvm/gems/ruby-2.3.3@global
export GEM_PATH=/usr/local/rvm/gems/ruby-2.3.3:/usr/local/rvm/gems/ruby-2.3.3@global
#echo `ruby -v`
#echo `which ruby`
APP_NAME=lathercraft
APP_ROOT="/var/www/$APP_NAME"
CNF="$APP_ROOT/unicorn.rb"
PID="/var/run/unicorn/unicorn_lathercraft.pid"
ENV=production
UNICORN_OPTS="-c $CNF -E $ENV -D"
old_pid="$PID.oldbin"

#export SECRET_KEY_BASE=`cd /var/www/lathercraft; bundle exec rake secret`

cd $APP_ROOT || exit 1

sig () {
    test -s "$PID" && kill -$1 `cat $PID`
}
oldsig () {
    test -s $old_pid && kill -$1 `cat $old_pid`
}

case ${1-help} in
start)
sig 0 && echo >&2 "Already running" && exit 0
cd $APP_ROOT
export SECRET_KEY_BASE=`bundle exec rake secret`
bundle exec unicorn_rails $UNICORN_OPTS
;;
stop)
sig QUIT && exit 0
echo >&2 "Not running"
;;
force-stop)
sig TERM && exit 0
echo >&2 "Not running"
;;
restart|reload)
sig HUP && echo reloaded OK && exit 0
echo >&2 "Couldn't reload, starting instead"
unicorn_rails $UNICORN_OPTS
;;
upgrade)
sig USR2 && exit 0
echo >&2 "Couldn't upgrade, starting instead"
unicorn_rails $UNICORN_OPTS
;;
rotate)
sig USR1 && echo rotated logs OK && exit 0
echo >&2 "Couldn't rotate logs" && exit 1
;;
*)
echo >&2 "Usage: $0 <start|stop|restart|upgrade|rotate|force-stop>"
exit 1
;;
esac

これでいいはず。スタートしてみよう。

[root@tk2-254-36564 init.d]# chmod 755 unicorn_lathercraft
[root@tk2-254-36564 init.d]# service unicorn_lathercraft start

OK。
自動起動するように設定。

[root@tk2-254-36564 init.d]# chkconfig unicorn_lathercraft on
[root@tk2-254-36564 init.d]# chkconfig --list unicorn_lathercraft
unicorn_lathercraft	0:off	1:off	2:on	3:on	4:on	5:on	6:off

これで完了。