Ruby on Rails + Nginx + Unicorn + MySQL環境構築

■ アップデート
sudo yum update

■ 環境構築に必要なパッケージインストール
sudo yum install git make gcc gcc-c++ patch openssl-devel libyaml-devel libffi-devel libicu-devel libxml2 libxslt libxml2-devel libxslt-devel zlib-devel readline-devel mysql mysql-server mysql-devel ImageMagick ImageMagick-devel

■ リポジトリ追加
sudo amazon-linux-extras install epel

■ node.jsのインストール
sudo yum install nodejs npm --enablerepo=epel

■ rbenvインストール
git clone https://github.com/sstephenson/rbenv.git ~/.rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
source .bash_profile
git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
rbenv rehash

■ Rubyインストール
rbenv install -v 2.6.2
rbenv global 2.6.2
rbenv rehash
ruby -v

■ githubからソースデプロイ

■ Unicornインストール
sudo yum install mysql-devel
gem install bundler
bundle install
vim config/unicorn.conf.rb

■ config/unicorn.conf.rb生成
vim config/unicorn.conf.rb

==
$worker = 2
$timeout = 30
$app_dir = "/var/www/rails/mumu" #自分のアプリケーション名
$listen = File.expand_path 'tmp/sockets/.unicorn.sock', $app_dir
$pid = File.expand_path 'tmp/pids/unicorn.pid', $app_dir
$std_log = File.expand_path 'log/unicorn.log', $app_dir

worker_processes $worker
working_directory $app_dir
stderr_path $std_log
stdout_path $std_log
timeout $timeout
listen $listen
pid $pid
preload_app true

before_fork do |server, worker|
defined?(ActiveRecord::Base) and ActiveRecord::Base.connection.disconnect!
old_pid = "#{server.config[:pid]}.oldbin"
if old_pid != server.pid
begin
Process.kill "QUIT", File.read(old_pid).to_i
rescue Errno::ENOENT, Errno::ESRCH
end
end
end

after_fork do |server, worker|
defined?(ActiveRecord::Base) and ActiveRecord::Base.establish_connection
end

■ Nginxインストール
sudo yum install nginx
sudo vim /etc/nginx/conf.d/smallmaker.conf
sudo chmod -R 775 /var/lib/nginx

■ MySQLインストール
sudo yum localinstall https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm -y
sudo yum-config-manager --disable mysql80-community
sudo yum-config-manager --enable mysql57-community
sudo yum install mysql-community-server -y

SET GLOBAL validate_password_length=4;
SET GLOBAL validate_password_policy=LOW;
set password for root@localhost=password('root');

■ MySQLユーザー作成
create user smallmaker@'localhost' identified with mysql_native_password by 'smallmaker';
grant all on . to smallmaker@'localhost';

■ データベース作成
CREATE DATABASE smallmaker DEFAULT CHARSET 'utf8';

■ unicorn 起動
#unicorn_rails -c /var/project/smallmaker/application/config/unicorn.conf.rb -D -E production
unicorn -c /var/project/smallmaker/application/config/unicorn.conf.rb -D -E production

■ unicorn 停止
sudo kill -QUIT cat tmp/pids/unicorn.pid

■ nginx スタート
sudo service nginx start