CI Chef recipes using Wercker + Vagrant + AWS + serverspec

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 :local do |local|
    local.vm.box = "ubuntu/trusty64"
    local.vm.network "private_network", ip: "192.168.50.13"
    local.ssh.forward_agent = true
    local.vm.provider "virtualbox" do |vb|
      vb.customize ["modifyvm", :id, "--memory", "2048"]
    end
  end

  config.vm.define :ec2 do |ec2|
    ec2.vm.box = 'dummy'
    ec2.vm.box_url = 'https://raw.githubusercontent.com/mitchellh/vagrant-aws/master/dummy.box'
    ec2.vm.provider :aws do |aws, override|
      aws.access_key_id = ENV['AWS_ACCESS_KEY_ID']
      aws.secret_access_key = ENV['AWS_SECRET_ACCESS_KEY']
      aws.region = 'ap-northeast-1'
      aws.instance_type = 't2.micro'
      aws.ami = 'ami-a1124fa0'
      aws.security_groups = ['default']
      aws.keypair_name = 'ec2'
      aws.tags = { 'Name' => 'vagrant' }
      override.ssh.username = 'ubuntu'
      override.ssh.private_key_path = '~/.ssh/ec2.pem'
    end
  end
end

wercker.yml

box: wercker/rvm

# Build definition
# See the Ruby section on the wercker devcenter:
# http://devcenter.wercker.com/articles/languages/ruby.html
build:
  # The steps that will be executed on build
  steps:
    - rvm-use:
        version: ruby-2.1.2

    # A step that executes `bundle install` command
    - bundle-install

    # A custom script step, name value is used in the UI
    # and the code value contains the command that get executed
    - script:
        name: echo ruby information
        code: |
          echo "ruby version $(ruby --version) running"
          echo "from location $(which ruby)"
          echo -p "gem list: $(gem list)"

    # Add more steps here:

    - script:
        name: create ~/.ssh
        code: install -d -m 755 ~/.ssh

    - create-file:
        name: create ~/.ssh/ec2.pem
        filename: $HOME/.ssh/ec2.pem
        overwrite: true
        hide-from-log: true
        content: $EC2_SSH_KEY_PRIVATE

    - script:
        name: set permission for ~/.ssh/ec2.pem
        code: chmod 400 $HOME/.ssh/ec2.pem

    - script:
        name: install vagrant
        code: |
          wget https://dl.bintray.com/mitchellh/vagrant/vagrant_1.6.5_x86_64.deb
          sudo dpkg -i vagrant_1.6.5_x86_64.deb
          which vagrant
          vagrant -v
          vagrant plugin install vagrant-aws unf

    - script:
        name: vagrant up
        code: vagrant up ec2 --provider=aws

    - script:
        name: create ~/.ssh/config
        code: |
          vagrant ssh-config --host=ec2 ec2 > ~/.ssh/config
          chmod 644 ~/.ssh/config

    - script:
        name: cook
        code: bundle exec knife solo bootstrap ec2

    - script:
        name: serverspec
        code: bundle exec rake spec:ec2

    - script:
        name: vagrant destroy
        code: vagrant destroy -f ec2

http://masutaka.net/chalow/2014-09-14-1.html