DevOps requires agility. The document discusses how DevOps involves operations and development engineers working together throughout the entire service lifecycle. It provides the example of Etsy, which deployed code to production an average of 32-50 times per day. Continuous integration is presented as a way to integrate changes frequently in order to detect issues early. The key aspects of continuous integration discussed are having a CI server that rebuilds and runs tests on every commit, as well as activities like unit testing, code analysis, reporting and visualization.

1. DevOps Requires Agility
Stephen D. Ritchie – Managing Consultant – Excella Consulting, Inc., 2300 Wilson Blvd, Suite 630, Arlington, VA 22201 – 703.840.8600 – http://excella.com
Stephen D. Ritchie
@RuthlessHelp
Oct 21, 2014
Agile Professionals Meetup
October 2014

2. Live Tweet, Slides and Examples
• Twitter: @RuthlessHelp
• Slides:
http://www.slideshare.net/ruthlesshelp
• Code Samples:
http://github.com/ruthlesshelp
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3. DevOps is the practice of operations
and development engineers
participating together in the entire
service lifecycle, from design
through the development process
to production support.
http://theagileadmin.com/what-is-devops/
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4. DevOps Defined
• Operations and Development Folks
– Working together
– Entire lifecycle
• Change in Mindset
– Values
– Principles
– Methods
– Practices
– Tools
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5. Example: Etsy
• Overview, June 2012
– Launched June 18, 2005
– 875,000 active sellers
– 33.5 million items for sale
– $65.9 million in sales, May 2012
– 1.4 billion page views, May 2012
– 102 engineers
• How often do they release to Production?
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6. Etsy Deployments
• Reported February 2011
“In January (a month in which we did over a billion
page views), code committed by 76 unique
individuals was deployed to production by 63
different folks a total of 517 times.”
• Reported June 2012
– 32 times per day
• Reported March 2014
– 50 times per day
– http://www.infoq.com/news/2014/03/etsy-deploy-
50-times-a-day
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7. Let’s Step Back
• Dan Pink
– Drive: The surprising truth about what
motivates us
• RSA Animate video
– https://www.youtube.com/watch?v=u6XAPnuF
jJc
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8. Autonomy
Mastery
Purpose
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9. The Problem
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Source
Code
1 3 2
9
Scott’s
Computer
Susan’s
Computer
You
1
2
3
Scott makes changes
Susan makes changes
You can’t build

10. What Went Wrong?
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Conflicts
Missing Files
Breaking Changes

11. How do you
find
integration
issues?
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12. Manual Integration
Build
Run Some Unit Tests
Perform Static Analysis
Clean + Rebuild All
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13. Continuous Integration Blueprint
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14. CI Server
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Source
Code
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Scott’s
Computer
Susan’s
Computer
You
CI
Server

15. CI Server
Triggered by SCM
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and
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16. CI – Per Commit Steps
1. Clean + Rebuild All
2. Run All Unit Tests
3. Analysis
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Static Code Analysis
Coding Standards
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17. Continuous Integration Toolbox
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18. CI Server – Jenkins
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http://jenkins-ci.org/
Free
Open Source

19. CI Server – Cruise Control
http://www.cruisecontrolnet.org/
Free
Open Source
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http://cruisecontrol.sourceforge.net/
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20. CI Server – TeamCity
http://www.jetbrains.com/teamcity/
Commercial
Easy to Use
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21. Perhaps an
example would
be helpful
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22. Continuous Integration Master Craft
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23. The Master Craft
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Unit Testing
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Plus
Code Coverage

24. The Master Craft
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System Testing
Integration Testing
Acceptance Testing
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25. The Master Craft
Visualizations
Checks
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Code Quality
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Metrics
Detections
Analysis

26. The Master Craft
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Reporting
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And
Visibility

27. The Master Craft
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Packaging
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And
Deployment

28. Closing Thought: CAMS
• Culture
– People and process first
– Virtuous discipline
• Automation
– Dev: building, testing, analyzing, packaging, deploying
– Ops: release management, provisioning, configuration management,
systems integration, monitoring and control, and orchestration
• Measurement
– Measure everything you can as often as you can
– Visibility and transparency
• Sharing
– Openness, share ideas and problems
– Confront problems, not each other
– Fail your way to success
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29. Stephen’s Contact Info
• Email:
stephen.ritchie@excella.com
• LinkedIn:
http://www.linkedin.com/in/sritchie
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