Puzzle ITC Talk @Docker CH meetup CI CD_with_Openshift_0.2
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Talk by Puzzle ITC at Docker Switzerland meetup, May 2016
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Puzzle ITC Talk @Docker CH meetup CI CD_with_Openshift_0.2
- 1. Continuous Delivery with OpenShift Docker Meetup 31.5.2016 Thomas Philipona CTO
- 2. Agenda 1. OpenShift v3 2. CI / CD 3. Key Concepts 4. OpenShift CI /CD Pipeline with Jenkins
- 4. OpenShift v3 “next generation PaaS” OpenShift v3 by Red Hat V3 new implementation based on « de facto » standard technologies
- 5. Based on reliable open source concepts Docker Kubernetes
- 6. OpenShift v3 Container Platform as a Service (PaaS) Multinode platform, Docker container runtime Docker build platform Docker registry One platform runs it all! Fancy CLI und GUI (self-service) Container security enabled
- 7. Workflows ● Docker build ● Prebuilt image ● Custom builder ● Source To Image
- 8. Workflow: Source To Image (S2I) Git ? s2i builder image eg. openshift/ruby-22-centos7 code code My App 1.push code to git 2.trigger webhook 3.clone repo 4.evaluate builder 5.assemble image 6.push to registry and deploy 1 2 3 4 5 MyApplicationMyApplicationMyApp 6 Ruby, Java, PHP, NodeJs, ...
- 9. CI / CD 2
- 10. Continuous Integration ● SCM ● compile and test ● software integration ● reporting ● deployment to test environment ● extension of CI ● one artifact on all environments ● fully automated deployment with a single click ● prod release with a single click ● each release is deployed to production ● rolling deployments necessary ● blue - green deployments Continuous Delivery Continuous Deployment
- 11. If It Hurts, Do It More Frequently, and Bring the Pain Forward Source: Jez Humble, David Farley, Continuous Delivery, Pearson Education, Inc. 2011
- 12. CI / CD Workflow Overview Git code Compile, Unit-tests Integration Tests, Package Deploy to Dev Acceptance Tests Deploy to UAT env Manual Tests Deploy to Prod
- 13. Key Concepts 3
- 14. Maven / Artefactrepository Maven versioning doesn't work well with continuous delivery Each commit is a potential release candidate SNAPSHOT versions do not exist Maven release plugin is integrated into the Maven lifecycle. All or nothing mvn release:prepare mvn release:perform→ Many releases artifactrepository clean up→
- 15. Rolling Updates OpenShift supports rolling updates. The application notifies the platform when it’s ready for requests. The routing layer then forwards requests to the new containers.
- 16. Automated Database Migration DB Migrationscripts are part of the deployed application and executed during startup. $ php bin/console doctrine:schema:update $ rake db:migrate
- 17. Automated Database Migration Database knows the current schema version During application startup / deployment lifecycle hook, the DB migration is executed Rolling update DB must be backward compatible
- 18. Concepts: Automated Database Migration V41 V42 V43 dropColumn dropColumn dropTable dropTable MyApplicationMyApplicationApp DB
- 19. Concepts: Automated Database Migration App.v41 App.v42 ... oldColumn newColumn ... guild42 guild42 DB Trigger
- 20. OpenShift CI /CD Pipeline with Jenkins 4
- 21. Java Maven Example (1) Git code Jenkins code Artefact Repo artefact checkout build release deploy Jenkins code Jenkins artefact cfg + Unit test + Integration test + Code analyse
- 22. Workflow: deploy 1.Jenkins build mvn clean install trigger build on OSE 2.custom build download artefact build docker image 3.deploy container Jenkins artifact 1 2 MyApplicationMyApplicationMyApp Custom builder image 3 My App cfg
- 23. Java Maven Example (2) acceptance tests Jenkins test Jenkins artefact cfg deploy to UAT manual test Jenkins artefact cfg deploy to Prod
- 24. Jenkins Pipeline Plugin Build jobs written as Groovy scripts. Build job script is next to source code in git repository Jenkins provides the environment ● Git / Artifactory / OpenShift Accounts https://wiki.jenkins-ci.org/display/JENKINS/Pipeline+Plugin
- 25. Example Build Script // Stage Checkout stage 'Checkout' git url: 'https://gitlab.puzzle.ch/tphilipona/appuio-javaee- example.git' // Stage Build stage 'Build' sh "${mvnHome}/bin/mvn clean install"
- 26. Stage View
- 27. Conclusion 5
- 28. Key Factors: Automation and Fast Feedback Customer, PO Dev Production DeploymentIdea, Feature, Bug Fast, qualified Feedback
- 30. Q & A 01.6.2016 in BE 15.6.2016 in ZH Free APPUiO OpenShift Techlab
- 31. Thank You!