Quick software release is a core business process at fast growing organizations. Yet, on many teams this important process is manual or semi-automated — an approach that's painful, risky, costly and time consuming. Using DevOps tools to implement Continuous Integration can dramatically improve your software delivery pipeline. Follow along with the webinar recording at http://youtu.be/u8PdgQvoSVo featuring @rgbkrk @rackninja from the Rackspace DevOps Automation Team and learn how to effectively deliver applications on API-driven infrastructure. Additional resources available at: http://www.rackspace.com/devops/ https://github.com/rackspace-cookbooks https://github.com/rackspace-cookbooks/contributing http://misheska.com/blog/2013/06/16/getting-started-writing-chef-cookbooks-the-berkshelf-way/ http://docs.ansible.com/intro_getting_started.html https://travis-ci.org/ http://travis-ci.com/

1. Using DevOps Tools to Achieve
Continuous Integration

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Speakers
Kyle Kelley
Developer Support Engineer
@rgbkrk
2
Ryan Richard, RHCA
DevOps Automation Team
Lead
@rackninja

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First, a precursor

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Why are we here?
•We are all building up similar systems
•Similar configurations, minor tweaks
•Want:
•More time for applications and business
•Less time doing SysOps

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Keep Deploying!
•Let’s keep that product going
•Let’s keep delivering!

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What can we do?
•Write tests
•Use Continuous Integration
•Use version control, particularly git

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Let’s Test!

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Object Placeholder
Downtime
•It’s going to happen
•Assume failure
•Have a rollback strategy
-for your application

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Testing with Open Source Tools

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Minimal .travis.yml
language: python
python:
– “2.6”
– “2.7”
– “3.2”
– “3.3”
# install dependencies
install: “pip install .”
# run tests
script: nosetests

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Need more build power?

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How the DevOps Automation
Service tests our cookbooks

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Practical examples with Chef
•Our pipeline for testing
cookbooks
•Testing your chef powered
infrastructure

19. Our CI pipeline for Chef cookbooks
CI serverJenkins

20. Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake

21. Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake
Ruby Syntax/lint

22. Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic

23. Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec

24. Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec
Functional tests
Test-kitchen + serverspec

25. Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec
Functional tests
Test-kitchen + serverspec
Thor
Human/automated
Post Steps
Final

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Two modes of application delivery
Webhook Cookbook
Python MongoSupervisord
• Build an application cookbook that can deploy latest
version of the application/artifact (chef specific)

27. 27RACKSPACE® HOSTING | WWW.RACKSPACE.COM
Two modes of application delivery
Webhook Cookbook
Python MongoSupervisord
• Build an application cookbook that can deploy latest
version of the application/artifact (chef specific)
• External workflow for application delivery
• (Capistrano, fabric, etc).

28. Application Cookbook Workflow
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec

29. Application Cookbook Workflow
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec
Functional tests
Test-kitchen + serverspec
Do not destroy instance

30. Application Cookbook Workflow
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec
Functional tests
Test-kitchen + serverspec
Do not destroy instance
Jenkins steps or additional jobs:
Integration tests, load tests, user tests, etc
Human/automated
Post Steps
Final

31. Deployment Workflow Model
CI serverJenkins
Chef Workflow
Test-kitchen + serverspec
Do not destroy instance

32. Deployment Workflow Model
CI serverJenkins
Chef Workflow
Test-kitchen + serverspec
Do not destroy instance
Additional JobsDeployment workflow executed

33. Deployment Workflow Model
CI serverJenkins
Chef Workflow
Test-kitchen + serverspec
Do not destroy instance
Additional JobsDeployment workflow executed
Integration tests, load tests, user tests, etc. Additional Jobs

34. Deployment Workflow Model
CI serverJenkins
Chef Workflow
FinalHuman/automated
Test-kitchen + serverspec
Do not destroy instance
Additional JobsDeployment workflow executed
Integration tests, load tests, user tests, etc. Additional Jobs

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