Continuous delivery applied (RJUG)
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This document provides an overview of continuous delivery and deployment practices. It discusses concepts like continuous integration, deployment pipelines, automated testing, configuration management, and deploying software frequently and reliably to production. The presentation emphasizes automating processes, deploying software in small batches, keeping everything version controlled, and establishing a culture of continuous improvement.
![Cycle Time
“How long would it take your organization to
deploy a change [to production] that involves
just one single line of code? Do you do this on a
repeatable, reliable basis?”
- Mary and Tom Poppendieck,
Implementing Lean Software Development
6](https://image.slidesharecdn.com/continuousdeliveryapplied-richmondjug-130321060142-phpapp01/85/Continuous-delivery-applied-RJUG-6-320.jpg)
Continuous delivery applied (RJUG)
- 1. Continuous Delivery Applied Mike McGarr jmcgarr@gmail.com @jmichaelmcgarr http://earlyandoften.wordpress.com http://www.meetup.com/DC-continuous-integration/
- 2. About Me • J. Michael (Mike) McGarr • 12 years as a software engineer • Director of DevOps for Learn, Blackboard • Founder of the DC Continuous Integration, Delivery, and Deployment Meetup 2
- 3. Continuous Delivery “Continuous delivery is a set of practices and principles aimed at, building, testing and releasing software faster and more frequently” cycle time 3
- 4. 4
- 5. Quality or Speed 5
- 6. Cycle Time “How long would it take your organization to deploy a change [to production] that involves just one single line of code? Do you do this on a repeatable, reliable basis?” - Mary and Tom Poppendieck, Implementing Lean Software Development 6
- 7. The Last Mile Manual Deployments Insufficient Configuration Management Infrequent, Error Prone Deployments 7
- 8. Stressful Releases 8
- 9. Frequent Automated Deployments http://flic.kr/p/29Ree 9
- 10. Always Production Ready 10
- 11. Applying Continuous Delivery Principles: Practices: • Improve continuously Continuous Deployment (DevOps) • Releasing software MUST be repeatable and reliable Build Pipelines • Automate everything! • If it hurts, do it more often Deployment Automation • Keep everything in version control • Done means “released” • Build quality in! Configuration Continuous Testing • Everybody has responsibility for Management Integration the release process Agile 11
- 13. Deployment Pipelines A Deployment Pipeline is an automated manifestation of your process for getting software from version control into the hands of your users. 13
- 14. Deployment Pipelines (aka Build Pipelines) 14
- 15. Continuous what? Continuous Continuous Continuous Integration Delivery Deployment commit = commit = commit = a build shippable production product release 15
- 17. Understand your Organization 17
- 18. Understand your Value Stream 18
- 19. Visualize Flow 19
- 20. Small Batches 20
- 22. It’s all about culture! http://dev2ops.org/2012/10/devops-transformation-workshop-for-technical-managers/ 22
- 23. Configuration Management 23
- 24. Version Control • Version Everything • Tool should stay out of the way • Good Branching Strategy • Don’t check-in binary files 24
- 25. Automate the Build • No IDE Builds! • KISS • Fail Fast (but smartly) • No Wiki’s to Build • Pick an appropriate Technology • Keep it organized • Dependency Management 25
- 26. Build Once, Deploy Many 26
- 27. Binary Repositories 27
- 28. Testing 28
- 29. Testing is not a Phase http://flic.kr/p/6bcg 29
- 30. Types of Tests 30
- 31. Testing Pyramid 31
- 34. Specification by Example 34
- 35. Specification by Example 35
- 37. Static Code Analysis CheckStyle 37
- 38. Continuous http://flic.kr/p/6hDAEK Integration
- 39. 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 39
- 40. Build Pipeline in Jenkins 40
- 41. Deploying 41
- 42. Automated Deployments 42
- 43. Code Deployments 1. Push New Binary to Server 2. Stop Server 3. Archive Old Binary 4. Deploy New Binary 5. Start Server 43
- 44. Version your Database 44
- 45. Database Deployments HTML .sql Production DBA DB Change Test DB Version Build Change Control Server DB Dev Change 45
- 46. 46
- 47. Infrastructure as Code 47
- 48. Puppet 48
- 49. Vagrant 49
- 50. Architecture and Design http://www.hdwallpapers.in/eiffel_tower_at_night_paris_france-wallpapers.html
- 51. Testable Design Coherence Coupling 51
- 52. Modularization http://www.voltron.com/#/history/show/lion-force-voltron 52
- 53. Evolutionary Design 53
- 54. Continuous Deployment 54
- 55. Monitoring (sucks) https://github.com/monitoringsucks 55
- 56. Key Takeaways • Continuous Delivery is hard • Fast Feedback is the key • Small, frequent releases • Version everything • Automate everything • Think culture 56
- 58. 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 58
- 59. 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 59
- 60. 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 60
- 61. 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 61
- 62. 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 62
- 63. 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 63
- 64. 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/ 64
- 65. 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/ 65
- 66. Testing Pyramids • http://fabiopereira.me/blog/2012/03/05/testing-pyramid-a-case-study/ • http://www.takadevelop.com/2013/02/09/testing-pyramid-for-agile- development/ • http://blogs.agilefaqs.com/2011/02/01/inverting-the-testing-pyramid/ • http://martinfowler.com/bliki/TestPyramid.html • http://mifos.org/contributors/qa-testing/future-quality-improvements- mifos • http://www.ibm.com/developerworks/java/library/j-aopwork11/ 66
Editor's Notes
- #6: Most orgs struggle to balance…Viewed as mutually exclusive
- #7: Cycle Time is a measure of Continuous Delivery maturity
- #8: 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.
- #9: Manual DeploymentsInsufficient Configuration ManagementInfrequent, Error Prone Deployments
- #12: Continuous improvementAutomation everythingVersion everythingQuality quality qualityShared responsibility