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Continuous Delivery Applied

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Continuous Delivery Applied was presented at the DC Agile Engineering Conference on 12/7/2012 by Mike McGarr (@jmichaelmcgarr).

Continuous Delivery Applied was presented at the DC Agile Engineering Conference on 12/7/2012 by Mike McGarr (@jmichaelmcgarr).


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  • Cycle Time is a measure of Continuous Delivery maturity
  • Collaboration (DEV + Customer, DEV + Operations)Talking early and often…break down walls. [DevOps]Automation. Automate Everything! Build, Test, Deploy!Frequency. Frequent means small. Easier to troubleshoot, rollback. Reduces Risk.Feedback. Change triggers feedback. Feedback is fast. Team acts on it.
  • Manual DeploymentsInsufficient Configuration ManagementInfrequent, Error Prone Deployments
  • Transcript

    • 1. Continuous Delivery AppliedMike McGarrjmcgarr@gmail.com@jmichaelmcgarrhttp://earlyandoften.wordpress.comhttp://www.meetup.com/DC-continuous-integration/
    • 2. About Me• J. Michael (Mike) McGarr• 11 years as an IT consultant• Director of DevOps for Learn, Blackboard• Founder of the DC Continuous Integration, Delivery, and Deployment Meetup 2
    • 3. Continuous Delivery is……a set of practices and principles aimed at,building, testing, and releasing softwarefaster and more frequently. 3
    • 4. 4
    • 5. 5
    • 6. “Our highest priority is to satisfy thecustomer through early andcontinuous delivery of valuablesoftware.” - First of the Twelve Principles behind the Agile Manifesto 6
    • 7. Quality or Speed 7
    • 8. Cycle Time“How long would it take your organization todeploy a change [to production] that involvesjust one single line of code? Do you do this on arepeatable, reliable basis?” - Mary and Tom Poppendieck, Implementing Lean Software Development 8
    • 9. The Last Mile Manual DeploymentsInsufficient Configuration ManagementInfrequent, Error Prone Deployments 9
    • 10. StressfulReleases 10
    • 11. Frequent AutomatedDeployments http://flic.kr/p/29Ree 11
    • 12. Always Production Ready 12
    • 13. Continuous Deployment Deployment Pipelines Deployment AutomationConfiguration ContinuousManagement Testing Integration Agile 13
    • 14. Deployment Pipelineshttp://www.fotopedia.com/users/chmehl 14
    • 15. Deployment PipelinesA Deployment Pipeline is an automatedmanifestation of your process for gettingsoftware from version control into thehands of your users. 15
    • 16. Deployment Pipelines (aka Build Pipelines) 16
    • 17. Continuous what?Continuous Continuous ContinuousIntegration Delivery Deployment 17
    • 18. Where do I start?
    • 19. Understand your Process http://www.michaelnygard.com/blog/2008/02/outrunning_your_headlights.html 19
    • 20. Understand your Organization 20
    • 21. Developers http://flic.kr/p/5cK2 21
    • 22. Test Driven Developmenthttp://reddevnews.com/articles/2007/11/01/testdriven-development-tdd.aspx 22
    • 23. Evolutionary Design 23
    • 24. Automate the Build 24
    • 25. Static Code Analysis CheckStyle 25
    • 26. Technical Debt 26
    • 27. The Team 27
    • 28. Agile 28
    • 29. Continuous Integration 29
    • 30. Continuous Integration Check-in Daily Commit to Trunk Automate the Build Keep the Build Fast Every Commit results in Build Test in Clone of Production Automate Deployment 30
    • 31. Build Pipeline in Jenkins 31
    • 32. Testing 32
    • 33. Types of Tests 33
    • 34. Test StrategyTaken from Growing Object-Oriented Software, Guided by Tests 34
    • 35. Testing is not a Phase http://flic.kr/p/6bcg 35
    • 36. Specification by Example 36
    • 37. Specification by Example 37
    • 38. Automated Performance Testing 38
    • 39. Configuration Management 39
    • 40. Version Control 40
    • 41. Build Once, Deploy Many 41
    • 42. Externalize Configuration ESCAPE Database 42
    • 43. Artifact Repositories 43
    • 44. Traceability 44
    • 45. Versioning Numbers 45
    • 46. Branch by Abstraction 46
    • 47. Deploying 47
    • 48. Automated Deployments 48
    • 49. Code Deployments 1. Push New Binary to Server 2. Stop Server 3. Archive Old Binary 4. Deploy New Binary 5. Start Server 49
    • 50. Version your Database 50
    • 51. Database Deployments HTML .sql Production DBA DBChange Test DB Version BuildChange Control Server DB DevChange 51
    • 52. 52
    • 53. DevOpshttp://www.agileweboperations.com/lean-agile-devops-related 53
    • 54. DevOps: it’s about culturehttp://dev2ops.org/2012/10/devops-transformation-workshop-for-technical-managers/ 54
    • 55. Infrastructure as Code 55
    • 56. Puppet 56
    • 57. Vagrant 57
    • 58. Monitoring (sucks) https://github.com/monitoringsucks 58
    • 59. Continuous Deployment 59
    • 60. Contact MeMike McGarrjmcgarr@gmail.com@jmichaelmcgarrhttp://earlyandoften.wordpress.com 60
    • 61. Further Reading• Continuous Delivery: Reliable Software Releases through Build, Test and Deployment Automation, by Jez Humble and David Farley - http://www.amazon.com/Continuous-Delivery-Deployment-Automation- Addison-Wesley/dp/0321601912• Continuous Integration, By Paul M Duvall - http://www.amazon.com/Continuous-Integration-Improving-Software- Reducing/dp/0321336380• Refactoring Databases, By Scott Ambler and Pramod Sadalage - http://www.amazon.com/Refactoring-Databases-Evolutionary- paperback-Addison-Wesley/dp/0321774515• Refactoring, By Martin Fowler - http://www.amazon.com/Refactoring- Improving-Design-Existing-Code/dp/0201485672• Growing Object-Oriented Software, Guided by Tests, by Steven Freeman and Nat Pryce - http://www.amazon.com/Growing-Object- Oriented-Software-Guided-Tests/dp/0321503627 61
    • 62. Further Reading• Extreme Programming Explained, by Kent Beck - http://www.amazon.com/Extreme-Programming-Explained-Embrace- Change/dp/0201616416• Release It!, by Michael Nygard - http://pragprog.com/book/mnee/release-it• xUnit Test Patterns, by Gerard Meszaros - http://www.amazon.com/xUnit-Test-Patterns-Refactoring- Code/dp/0131495054• Working Effectively with Legacy Code, by Michael Feathers - http://www.amazon.com/Working-Effectively-Legacy-Michael- Feathers/dp/0131177052• Agile Testing, by Lisa Crispin and Janet Gregory - http://www.amazon.com/Agile-Testing-Practical-Guide- Testers/dp/0321534468 62
    • 63. Further Reading• Test Driven Development (TDD) – http://en.wikipedia.org/wiki/Test- driven_development• Introducing BDD, by Dan North – http://dannorth.net/introducing-bdd/• Agile Manifesto – http://agilemanifesto.org/• Scrum – http://www.scrumalliance.org/learn_about_scrum• Continuous Integration, by Martin Fowler – http://martinfowler.com/articles/continuousIntegration.html• Specification by Example, by Gojko Adzic - http://specificationbyexample.com/• Build Pipelines - http://www.magpiebrain.com/2009/12/13/a-brief-and- incomplete-history-of-build-pipelines/• Implementing Lean Software Development, by Mary and Tom Poppendieck - http://www.amazon.com/Implementing-Lean-Software- Development-Concept/dp/0321437381 63
    • 64. Further Reading• Maven Releases on Steriods, by Axel Fontaine – http://www.axelfontaine.com/2011/01/maven-releases-on-steroids- adios.html• What is in a Name? Usually a version number, actually., by James Betteley - http://jamesbetteley.wordpress.com/2011/07/07/what-is-in-a- name-usually-a-version-number-actually/• Build Once, Deploy Many - http://earlyandoften.wordpress.com/2010/09/09/build-once-deploy- many/• Evolutionary Design - http://martinfowler.com/articles/designDead.html• Continuous Deployment - http://timothyfitz.wordpress.com/2009/02/08/continuous-deployment/• Sonar’s Technical Debt Calculation - http://www.sonarsource.org/evaluate-your-technical-debt-with-sonar/• Gherkin - https://github.com/cucumber/cucumber/wiki/Gherkin 64
    • 65. Further Reading• Branch by Abstraction, by Paul Hammant http://paulhammant.com/blog/branch_by_abstraction.html• Making Large Scale Changes Incrementally with Branch by Abstraction, by Jez Humble - http://continuousdelivery.com/2011/05/make-large-scale-changes- incrementally-with-branch-by-abstraction/• What is DevOps?, by Damon Edwards - http://dev2ops.org/2010/02/what-is-devops/• Monitoring Sucks - https://github.com/monitoringsucks 65
    • 66. Tools• Git - http://git-scm.com/• Subversion - http://subversion.tigris.org/• Mercurial - http://mercurial.selenic.com/• Rational ClearCase - http://www- 01.ibm.com/software/awdtools/clearcase/• Serena Dimensions CM - http://www.serena.com/products/dimensions- cm/index.html• Ant - http://ant.apache.org/• Ivy - http://ant.apache.org/ivy/• Maven - http://maven.apache.org/• Gradle - http://gradle.org/• JUnit – http://www.junit.org/• Mockito – http://code.google.com/p/mockito/• Hamcrest – http://code.google.com/p/hamcrest/• Spock – http://code.google.com/p/spock/• dbUnit – http://www.dbunit.org/• Unitils – http://unitils.org/summary.html 66
    • 67. Tools• Findbugs – http://findbugs.sourceforge.net/• PMD – http://pmd.sourceforge.net/• Checkstyle – http://checkstyle.sourceforge.net/• JIRA – http://www.atlassian.com/software/jira/overview• GitHub – https://github.com/• Jenkins - http://jenkins-ci.org/• TeamCity – http://www.jetbrains.com/teamcity/• Nexus – http://www.sonatype.org/nexus/• Artifactory – http://www.jfrog.com/products.php• Sonar – http://www.sonarsource.org/• FitNesse – http://fitnesse.org/• Concordion – http://www.concordion.org/• Cucumber – http://cukes.info/• easyb – http://www.easyb.org/• jBehave - http://jbehave.org/• geb - http://www.gebish.org/ 67
    • 68. Tools• Liquibase – www.liquibase.org/• Flyway – http://code.google.com/p/flyway/• Escape – http://code.google.com/p/escservesconfig/• Capistrano - https://github.com/capistrano/capistrano• Deployinator - https://github.com/etsy/deployinator• Puppet – http://puppetlabs.com/• Chef – http://www.opscode.com/chef/• Ansible - http://ansible.cc/• Vagrant – http://vagrantup.com/• JMeter – http://jmeter.apache.org/• Nagios - http://www.nagios.org/• Logstash - http://logstash.net/• StatsD – https://github.com/etsy/statsd• Metrics – http://metrics.codahale.com/• Ganglia – http://ganglia.sourceforge.net/• Graphite - http://graphite.wikidot.com/ 68