Ubuntu にChef-solo でrbenv + Ruby をインストールする

前提条件

• Chef DK（Chef Development Kit）のインストールが済んでいる

手順の流れ

1. cookbook 作成
2. attributes 作成
3. templates 作成
4. chef 実行
5. 実行結果確認

手順詳細

基本的にCentOS の場合と同じです。
ただし、事前インストールするライブラリの種類が異なるので、attributes/default.rb のpackages 内容には注意。

1. cookbook 作成

sudo knife cookbook create rbenv -o /var/chef/cookbooks

#
# Cookbook Name:: rbenv
# Recipe:: default
#
# Copyright 2016, YOUR_COMPANY_NAME
#
# All rights reserved - Do Not Redistribute
#
node['rbenv']['packages'].each do |package_name|
  package "#{package_name}" do
    :install
  end
end

git "/home/#{node['rbenv']['user']}/.rbenv" do
  repository node['rbenv']['rbenv_uri']
  reference 'master'
  action :sync
  group node['rbenv']['group']
  user node['rbenv']['user']
end

template '.bash_profile' do
  source 'bash_profile.erb'
    path "/home/#{node['rbenv']['user']}/.bash_profile"
  mode '0644'
  owner node['rbenv']['user']
  group node['rbenv']['group']
  not_if "grep rbenv /home/#{node['rbenv']['user']}/.bash_profile"
end

directory "/home/#{node['rbenv']['user']}/.rbenv/plugins" do
  owner node['rbenv']['user']
  group node['rbenv']['group']
  mode '0755'
  action :create
end

%w{ruby-build rbenv-default-gems rbenv-gem-rehash}.each do |plugin|
  git "/home/#{node['rbenv']['user']}/.rbenv/plugins/#{plugin}" do
    repository node['rbenv']["#{plugin}_uri"]
    reference 'master'
    action :sync
    group node['rbenv']['group']
    user node['rbenv']['user']
  end
end

template 'default-gems' do
  source 'default-gems.erb'
  path "/home/#{node['rbenv']['user']}/.rbenv/default-gems"
  mode '0755'
  owner node['rbenv']['user']
  group node['rbenv']['group']
  not_if { File.exists?("/home/#{node['rbenv']['user']}/.rbenv/default-gems") }
end

execute "rbenv install #{node['rbenv']['version']}" do
  command "/home/#{node['rbenv']['user']}/.rbenv/bin/rbenv install #{node['rbenv']['version']}"
  environment 'HOME' => "/home/#{node['rbenv']['user']}"
  user node['rbenv']['user']
  group node['rbenv']['group']
  not_if { File.exists?("/home/#{node['rbenv']['user']}/.rbenv/versions/#{node['rbenv']['version']}") }
end

execute "rbenv global #{node['rbenv']['version']}" do
  command "/home/#{node['rbenv']['user']}/.rbenv/bin/rbenv global #{node['rbenv']['version']}"
  environment 'HOME' => "/home/#{node['rbenv']['user']}"
  user node['rbenv']['user']
  group node['rbenv']['group']
  not_if "grep #{node['rbenv']['version']} /home/#{node['rbenv']['user']}/.rbenv/version"
end

2. templates 作成

vi /var/chef/cookbooks/rbenv/templates/default/bash_profile.erb

# .bash_profile

# Get the alias and functions
if [ -f ~/.bashrc ]; then
    . ~/.bashrc
fi

# User specific environment and startup programs
PATH=$PATH:$HOME/bin
export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"

sudo vi /var/chef/cookbooks/rbenv/templates/default/default-gems.erb

bundler
pry

3. attributes 作成

sudo vi /var/chef/cookbooks/rbenv/attributes/default.rb

ユーザー名（下記では’hoge’）はrbenv のインストール先ユーザーなので、任意に変更のこと。

default['rbenv']['user'] = 'hoge'
default['rbenv']['group'] = 'hoge'
default['rbenv']['version'] = '2.2.4'
default['rbenv']['rbenv_uri'] = 'https://github.com/sstephenson/rbenv.git'
default['rbenv']['ruby-build_uri'] = 'https://github.com/sstephenson/ruby-build.git'
default['rbenv']['rbenv-default-gems_uri'] = 'https://github.com/sstephenson/rbenv-default-gems.git'
default['rbenv']['rbenv-gem-rehash_uri'] = 'https://github.com/sstephenson/rbenv-gem-rehash.git'
default['rbenv']['packages'] = %w{git build-essential libssl-dev libreadline-dev}

4. chef 実行

cd /var/chef/cookbooks
sudo chef-solo -o rbenv

5. 実行結果確認

su hoge
source ~/.bash_profile
rbenv -v
ruby -v

参考

Chef Solo+Vagrantで、CentOSにrbenvでRuby環境構築 – Qiita

default-gems.erb ...