Docker: 容器
Itamae: 廚師
Vagrant: 游牧民

使用Docker | Vagrant + Itamae创建Docker的Hello world #docker #itamae #vagrant

总结

用Vagrant和Itamae来使Docker达到Hello World的通信。

构成

操作系统：Ubuntu 1404（Vagrant Box：’box-cutter/ubuntu1404’）
Vagrant版本：1.6.5
Itamae版本：v1.0.8

做法

建立工作目录

$ mkdir docker_sample
$ cd docker_sample

生成一个 Vagrantfile 的模板

$ Vagrant init -m
$  ls -F | grep Vagrantfile
Vagrantfile

编辑Vagrantfile

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

# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
VAGRANTFILE_API_VERSION = "2"

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  config.vm.define "dockersample" do |web|
    web.vm.provider :virtualbox do |vb|
      vb.name = "dockersample"
    end
    web.vm.hostname = "dockersample"
    web.vm.box = "box-cutter/ubuntu1404"
  end
end

创建 Itamae 的配方（docker.rb）。

execute "apt-get update" do
  command "sudo apt-get update"
end

package 'docker.io' do
  action :install
end

execute "enable tab-completion of Docker commands in BASH" do
  command <<-COMMANDS
#!/bin/bash
source /etc/bash_completion.d/docker.io
  end
end

execute "install apt-transport-https" do
  command <<-COMMANDS
[ -e /usr/lib/apt/methods/https ] || {
  apt-get update
  apt-get install apt-transport-https
}
  COMMANDS
end

execute "install apt-transport-https" do
  command <<-COMMANDS
sudo sh -c "wget -qO- https://get.docker.io/gpg | apt-key add -"
sudo sh -c "echo deb http://get.docker.io/ubuntu docker main\ > /etc/apt/sources.list.d/docker.list"
sudo apt-get update
  COMMANDS
end

package 'lxc-docker' do
  action :install
  options("-y")
end

使用 Vagrant up 命令来创建虚拟环境。

$ vagrant up
$ vagrant ssh
Welcome to Ubuntu 14.04.1 LTS (GNU/Linux 3.13.0-32-generic x86_64)

 * Documentation:  https://help.ubuntu.com/
Last login: Sun Nov  2 22:18:17 2014 from 10.0.2.2

执行Itamae的食谱

$ vagrant ssh-config --host dockersample
$ itamae ssh --vagrant -h dockersample docker.rb

确认Docker的安装。

$ vagrant ssh

# 初回実行のため ubuntu:14.04 のイメージの取得を行う
vagrant@dockersample:~$ sudo docker run ubuntu:14.04  /bin/echo 'Hello world'
Unable to find image 'ubuntu:14.04' locally
ubuntu:14.04: The image you are pulling has been verified
511136ea3c5a: Pull complete
d497ad3926c8: Pull complete
ccb62158e970: Pull complete
e791be0477f2: Pull complete
3680052c0f5c: Pull complete
22093c35d77b: Pull complete
5506de2b643b: Pull complete
Status: Downloaded newer image for ubuntu:14.04
Hello world

# 2回目実行のため ubuntu:14.04 のイメージは取得済み
vagrant@dockersample:~$ sudo docker run ubuntu:14.04 /bin/echo 'Hello world'
Hello world