My slides given for a talk about testing Ansible code with Jenkins and Docker.

1. Testing Ansible with
Jenkins and Docker
Dennis Rowe
@shr3kst3r
wpengine.com

2. Goals
Verify the Ansible code
Run the Ansible code
Verify the Results

3. • Why we are here
• Automation
• Configuration Management

4. • “An extensible open source continuous
integration server”
• Lets us run stuff
• Plugins lets you do extra stuff

5. • The new hotness
• Containers
• Tools for containers

6. Note
• So, I did it two ways.
• First way, meh
• Second way, less meh, more weeee

7. The First Way

8. We Need Two Jobs

9. Building a Docker
Image

10. Create our First
Jenkins Project
• Create a freestyle project called “Build
Docker Image”
• Use custom workspace (under
Advanced). I set my workspace to
build_docker_image.
• Configure the source repository (https://
github.com/shr3kst3r/ansible-jenkins-
example.git)

11. Add “Execute shell”
Build Step

12. Dockerfile

13. Running the Build

14. Docker Images

15. Running Test with
Docker

16. Docker Plugins
• “Docker plugin”
• https://wiki.jenkins-ci.org/display/
JENKINS/Docker+Plugin
• “SSH plugin”
• https://wiki.jenkins-ci.org/display/
JENKINS/SSH+plugin

17. Docker plugin
(configure system)

18. Add a SSH Remote

19. Create our Second
Jenkins Project
• Create a freestyle project called
“Project Test Ansible with Docker”
• Use custom workspace (under
Advanced). I set my workspace to
docker_ansible.
• Configure the source repository (https://
github.com/shr3kst3r/ansible-jenkins-
example.git)

20. Start Container

21. Execute Tests

22. test_it
• Lint Ansible code using ansible-lint
(https://github.com/willthames/ansible-
lint)
• Run the Ansible playbook
• Verify environment using Serverspec
(http://serverspec.org/)
• Source: https://github.com/shr3kst3r/
ansible-jenkins-example/blob/master/
test_it

23. Stop Dockers

24. Build

27. Test Container
• I can actually get access to the running
container
• Just delete the “Post-build Action”
• Then run the build

28. Left Over Container

29. ssh

30. The Second Way

31. Notes
• Similar two the first way, but no Jenkins
plugins.
• Derived from the book “The Docker
Book” by James Turnbull

32. Thats All

33. Bonus

34. Testing on my Mac
• http://boot2docker.io/
• docker build -t jenkins-ansible .
• docker run -v "/Users/dennis/git/ansible-
jenkins-example:/build:rw" jenkins-
ansible /bin/bash -c 'cd /build && ./
test_it’
• docker rm $(docker ps -a -q) # delete

36. Benefits
• Super fast start times. Do not have to
spin up a server.
• Allows for a very quick test lifecycle (22
seconds total time for this simple
example)
• Reproducible and Consistent

37. Ansible and Docker
• Some General Info (interesting video):
http://www.ansible.com/docker
• Docker Module: http://
docs.ansible.com/docker_module.html

38. Odds and Ends
• https://github.com/shr3kst3r/ansible-
jenkins-example
• You can reach me at
dennis@wpengine.com or @shr3kst3r
on the twitters