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岩手県立大学ソフトウェア情報学部Advent Calendar 2014

Day 25

VagrantでRails環境を整備する

Last updated at Posted at 2014-12-25

お疲れ様です。ジャックです。
VagrantでRailsアプリケーションを動かす手順をメモしました。
ゆくゆくは「Rails + Unicron + Nginx」な環境を構築したいです。

Vagrantで仮想環境を準備する

Vagrantboxをダウンロードする

vagrant-ubuntu-14.04というディレクトリを用意し、そこで作業を行う。

$ mkdir vagrant-ubuntu-14.04
$ cd vagrant-ubuntu-14.04
$ vagrant box add ubuntu-14.04 https://cloud-images.ubuntu.com/vagrant/trusty/current/trusty-server-cloudimg-amd64-vagrant-disk1.box
$ vagrant box list

Vagrantの設定をする

はじめに、Vagrantを初期化しVagrantfileを生成する。

$ vagrant init ubuntu-14.04

Railsアプリケーションを作成した際に http://localhost:3000 でアクセスできるようにする為に、Vagrantfileを変更する。

# Create a forwarded port mapping which allows access to a specific port
# within the machine from a port on the host machine. In the example below,
# accessing "localhost:8080" will access port 80 on the guest machine.
#config.vm.network :forwarded_port, guest: 80, host: 8080
config.vm.network :forwarded_port, guest: 3000, host: 3000

Vagrantを起動し、sshでログインする。

$ vagrant up
$ vagrant ssh

Ubuntuのアップデート作業

Vagrantで作成した仮想マシンにsshでログイン後、下記コマンドをインストールする。

$ sudo apt-get updat
$ sudo apt-get dist-upgrade

RubyとRails環境を構築する

rbenvとRubyをインストールする

$ sudo apt-get install build-essential
$ sudo apt-get install git
$ sudo apt-get install libssl-dev
$ sudo apt-get install libsqlite3-dev
$ git clone https://github.com/sstephenson/rbenv.git ~/.rbenv
$ echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
$ echo 'eval "$(rbenv init -)"' >> ~/.bashrc
$ git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
$ source .bashrc
$ rbenv install 2.0.0-p353
$ rbenv global 2.0.0-p353
$ rbenv rehash

Railsをインストールする

$ gem install --no-ri --no-rdoc rails
$ rails -v # Railsのバージョンを確認
Rails 4.2.0

bundleコマンドをインストールする

$ gem install bundler

Railsのサンプルアプリを作成する

サンプルアプリを作成

$ rails new sample
$ cd sample

Gemfileを修正

vim等でファイルを開き「gem 'therubyracer', platforms: :ruby」のコメントアウトを外す。
また、サンプルアプリでは利用しない為「gem 'byebug'」と「gem 'spring'」をコメントアウトする。

source 'https://rubygems.org'


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.0'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.0'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  # gem 'byebug'

  # Access an IRB console on exception pages or by using <%= console %> in views
  gem 'web-console', '~> 2.0'

  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  # gem 'spring'
end

RubyGemsのアップデートを行う

$ gem install rubygems-update
$ update_rubygems
$ gem -v # RubyGemsのバージョンを確認
2.4.5

bundle installを実行

$ bundle install --path=~/sample/vendor/bundle

Railsを起動

$ rails s
=> Booting WEBrick
=> Rails 4.2.0 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
[2014-12-25 09:56:21] INFO  WEBrick 1.3.1
[2014-12-25 09:56:21] INFO  ruby 2.0.0 (2013-11-22) [x86_64-linux]
[2014-12-25 09:56:21] INFO  WEBrick::HTTPServer#start: pid=8387 port=3000

次回は、Railsアプリケーションを「Unicorn + Nginx」で動かす手順をまとめる予定です。

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