ProStack v0.1 - Test Driven Infra

instructions.md

Pro Stack 0.1

Test Driven Infrastructure with Chef

Slides

• Title
• Intro
  • About Me
    • Community Software Engineer at Chef
    • Organizer of LA DevOps, HangOps, SysAdvent
    • Co Host of Ops All The Things
• What is Chef?
• Let's Talk About Testing
  • Types
    • Linting
    • Unit Testing (Pre-Convergence)
    • Convergence Testing (Does it compile)
    • Integration Testing (Post-Converge)
  • Linting
    • Rubocop for Ruby
    • Foodcritic for Chef
  • Convergence Testing
    • Kitchen Test Kitchen
    • I <3 Digital Ocean
  • Post Convergence Testing
    • Serveserverspec
    • BATS
• Demo Time!
  • Build an app that does...

Code

Create Cookbook

chef generate cookbook awesomeapp
echo "Make Chris' Environment More Standard"
export KITCHEN_YAML=.kitchen.yml
cd awesomeapp

Setup Kitchen to Use Digtal Ocean

vi .kitchen.yml

Content

---
driver_config:
  digitalocean_client_id: <%= ENV['DIGITAL_OCEAN_CLIENT_ID'] %>
  digitalocean_api_key: <%= ENV['DIGITAL_OCEAN_API_KEY'] %>

provisioner:
  name: chef_zero
  require_chef_omnibus: latest

platforms:
- name: ubuntu-14.04
  driver_plugin: digital_ocean
  driver_config:
    size: 1gb
    image: ubuntu-14-04-x64
    region: <%= ENV['DIGITAL_OCEAN_REGION'] %>

suites:

- name: default
  run_list:
  - recipe[awesomeapp]
  attributes: {}

Write Some Tests

mkdir -p test/integration/default/serverspec
vi test/integration/default/serverspec/spec_helper.rb

Content

require 'serverspec'

set :backend, :exec

set :path, '/sbin:/usr/sbin:/usr/local/sbin:$PATH'

---

vi test/integration/default/serverspec/default_spec.rb

Content

require 'spec_helper'

describe process('nginx') do
  it { should be_running }
end

describe port('80') do
  it { should be_listening }
end

Converge and Run Tests

kitchen list
kitchen converge
kitchen verify

Make Some Tests Pass

Add nginx cookbook

vi metadata.rb

Add:

depends 'nginx'

---

vi recipes/default.rb

Add:

include_recipe 'nginx'

---

kitchen converge
kitchen verify

Setup A Site

Start with Tests

vi test/integration/default/serverspec/an_site_spec.rb

Content

require 'spec_helper'

describe command('curl http://localhost') do
  its(:stdout) { should match %r{An Site} }
end

---

Make 'em pass

vi recipes/default.rb

Add

directory '/var/www/nginx-default/' do
  action :create
  recursive true
  group 'www-data'
  owner 'www-data'
  mode '0755'
end

file '/var/www/nginx-default/index.html' do
  action :create
  content 'An Site'
  group 'www-data'
  owner 'www-data'
  mode '0644'
end

---

kitchen converge
kitchen verify

Add a vhost

Start with tests

vi test/integration/default/serverspec/teh_site_spec.rb

Content

require 'spec_helper'

describe command("curl -H 'Host: teh.site.com' http://localhost/") do
  its(:stdout) { should match %r{Teh Site} }
end

---

Make it Pass

vi recipes/default.rb

Add

template '/etc/nginx/sites-available/teh_site' do
  action :create
  source 'teh_site.erb'
  owner 'root'
  group 'root'
  mode '0644'
end

nginx_site 'teh_site'

directory '/var/www/teh_site/' do
  action :create
  recursive true
  group 'www-data'
  owner 'www-data'
  mode '0755'
end

file '/var/www/teh_site/index.html' do
  action :create
  content 'Teh Site'
  group 'www-data'
  owner 'www-data'
  mode '0644'
end

---

mkdir -p templates/default
vi templates/default/teh_site.erb

Content:

server {
  listen   80;
  root /var/www/teh_site;
  index index.html index.htm;
  server_name teh.site.com;
}