rails5の開発環境を構築する！


## CentOS7.3の払い出し

[Packerを使用して自分仕様のboxを作成する](http://qiita.com/darwin/items/9fd55f3f7d96ec86ea6d)でボックスを作成したので、作成したboxファイルは次のコマンドでvagrantに登録することが出来ます。

` $ vagrant init ~/Documents/bento/builds/centos-7.3.parallels.box

するとカレントディレクトリにこんなVagrantfileが作成されます。

``` Vagrantfile
# -*- mode: ruby -*-
# vi: set ft=ruby :

# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure("2") do |config|
  # The most common configuration options are documented and commented below.
  # For a complete reference, please see the online documentation at
  # https://docs.vagrantup.com.

  # Every Vagrant development environment requires a box. You can search for
  # boxes at https://atlas.hashicorp.com/search.
  config.vm.box = "/Users/ユーザ名/Documents/bento/builds/centos-7.3.parallels.box"

  # Disable automatic box update checking. If you disable this, then
  # boxes will only be checked for updates when the user runs
  # `vagrant box outdated`. This is not recommended.
  # config.vm.box_check_update = false

  # 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

  # Create a private network, which allows host-only access to the machine
  # using a specific IP.
  # config.vm.network "private_network", ip: "192.168.33.10"

  # Create a public network, which generally matched to bridged network.
  # Bridged networks make the machine appear as another physical device on
  # your network.
  # config.vm.network "public_network"

  # Share an additional folder to the guest VM. The first argument is
  # the path on the host to the actual folder. The second argument is
  # the path on the guest to mount the folder. And the optional third
  # argument is a set of non-required options.
  # config.vm.synced_folder "../data", "/vagrant_data"

  # Provider-specific configuration so you can fine-tune various
  # backing providers for Vagrant. These expose provider-specific options.
  # Example for VirtualBox:
  #
  # config.vm.provider "virtualbox" do |vb|
  #   # Display the VirtualBox GUI when booting the machine
  #   vb.gui = true
  #
  #   # Customize the amount of memory on the VM:
  #   vb.memory = "1024"
  # end
  #
  # View the documentation for the provider you are using for more
  # information on available options.

  # Define a Vagrant Push strategy for pushing to Atlas. Other push strategies
  # such as FTP and Heroku are also available. See the documentation at
  # https://docs.vagrantup.com/v2/push/atlas.html for more information.
  # config.push.define "atlas" do |push|
  #   push.app = "YOUR_ATLAS_USERNAME/YOUR_APPLICATION_NAME"
  # end

  # Enable provisioning with a shell script. Additional provisioners such as
  # Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
  # documentation for more information about their specific syntax and use.
  # config.vm.provision "shell", inline: <<-SHELL
  #   apt-get update
  #   apt-get install -y apache2
  # SHELL
end
```

あまりにも長いので、不必要なところを削除して、こんな形にしました。

``` Vagrantfile
# -*- mode: ruby -*-
# vi: set ft=ruby :

# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure("2") do |config|
  config.vm.box = "/Users/mitani/Documents/bento/builds/centos-7.3.parallels.box"

  # accessing "localhost:8080" will access port 80 on the guest machine.
  # config.vm.network "forwarded_port", guest: 80, host: 8080

  # config.vm.network "private_network", ip: "192.168.33.10"

  # your network.
  # config.vm.network "public_network"

  # config.vm.synced_folder "../data", "/vagrant_data"

  # config.vm.provider "virtualbox" do |vb|
  #   # Display the VirtualBox GUI when booting the machine
  #   vb.gui = true
  #
  #   # Customize the amount of memory on the VM:
  #   vb.memory = "1024"
  # end
  #
  # View the documentation for the provider you are using for more
  # information on available options.

  # Enable provisioning with a shell script. Additional provisioners such as
  # Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
  # documentation for more information about their specific syntax and use.
  # config.vm.provision "shell", inline: <<-SHELL
  #   apt-get update
  #   apt-get install -y apache2
  # SHELL
end
```

少しはスッキリしたかなw

このファイルの説明は[さくらのナレッジ](http://knowledge.sakura.ad.jp/tech/1552/2/)とかググればいくらでも出てくるので、ここでは説明を省略します。

vagrantコマンドは[Vagrant + VirtualBoxでWindows上に開発環境をサクッと構築する](http://qiita.com/ozawan/items/160728f7c6b10c73b97e)に詳しく書かれていますw

## rbenvとrails5のインストール
せっかくなので、rbenvとrails5をchefで構築します。
私のgitgubにchefのcookbookを置いてあります。
(大したことはしていませんが)
[rbenv+rails5のcookbook](https://github.com/mitani-darwin/rails5)

そして、このcookbookをVagrantファイルに書いておけば、いつでも構築できますね。

``` Vagrantfile
# -*- mode: ruby -*-
# vi: set ft=ruby :

# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure("2") do |config|
  config.vm.box = "/Users/*****/Documents/bento/builds/centos-7.3.parallels.box"

  # accessing "localhost:8080" will access port 80 on the guest machine.
  # config.vm.network "forwarded_port", guest: 80, host: 8080

  # config.vm.network "private_network", ip: "192.168.33.10"

  # your network.
  # config.vm.network "public_network"

  # config.vm.synced_folder "../data", "/vagrant_data"

  # config.vm.provider "virtualbox" do |vb|
  #   # Display the VirtualBox GUI when booting the machine
  #   vb.gui = true
  #
  #   # Customize the amount of memory on the VM:
  #   vb.memory = "1024"
  # end
  #
  # View the documentation for the provider you are using for more
  # information on available options.

  # Enable provisioning with a shell script. Additional provisioners such as
  # Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
  # documentation for more information about their specific syntax and use.
   config.vm.provision "shell", inline: <<-SHELL
     # yum -y update
     curl -O https://packages.chef.io/files/stable/chef/12.18.31/el/7/chef-12.18.31-1.el7.x86_64.rpm
     rpm -ivh chef-12.18.31-1.el7.x86_64.rpm
     /opt/chef/embedded/bin/gem install knife-solo --no-ri --no-rdoc
     yum -y install git
     git clone https://github.com/mitani-darwin/rails5.git
     sudo ssh-keygen -t rsa -f /root/.ssh/id_rsa -N ''
     sudo ssh-keygen -t rsa -f /home/vagrant/.ssh/id_rsa -N ''
     sudo chown vagrant:vagrant -R /home/vagrant/.ssh/*
     sudo cat /root/.ssh/id_rsa.pub > /root/.ssh/authorized_keys
     sudo cat /home/vagrant/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys
     sudo chmod 600 /root/.ssh/authorized_keys
     cd rails5
     sudo knife solo bootstrap root@127.0.0.1
   SHELL
end