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Puzzle ITC Talk @Docker CH meetup CI CD_with_Openshift_0.2
This document discusses continuous delivery using OpenShift. It begins with an overview of OpenShift v3, including that it is a container platform as a service based on Docker and Kubernetes. It then covers key concepts in continuous integration and continuous delivery like automated database migrations and rolling updates. Finally, it provides an example of setting up a continuous integration/continuous delivery pipeline in OpenShift using Jenkins, including building and deploying a Java/Maven application through various stages.
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Puzzle ITC Talk @Docker CH meetup CI CD_with_Openshift_0.2
- 1. Continuous Delivery with OpenShift DockerMeetup 31.5.2016 Thomas Philipona CTO
- 2. Agenda 1. OpenShift v3 2.CI / CD 3. Key Concepts 4. OpenShift CI /CD Pipeline with Jenkins
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- 4. OpenShift v3 “next generationPaaS” OpenShift v3 by Red Hat V3 new implementation based on « de facto » standard technologies
- 5. Based on reliableopen source concepts Docker Kubernetes
- 6. OpenShift v3 Container Platformas 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 ToImage (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, ...
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- 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 / CDWorkflow Overview Git code Compile, Unit-tests Integration Tests, Package Deploy to Dev Acceptance Tests Deploy to UAT env Manual Tests Deploy to Prod
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- 14. Maven / Artefactrepository Mavenversioning 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 supportsrolling 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 DBMigrationscripts are part of the deployed application and executed during startup. $ php bin/console doctrine:schema:update $ rake db:migrate
- 17. Automated Database Migration Databaseknows 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 DatabaseMigration V41 V42 V43 dropColumn dropColumn dropTable dropTable MyApplicationMyApplicationApp DB
- 19. Concepts: Automated DatabaseMigration App.v41 App.v42 ... oldColumn newColumn ... guild42 guild42 DB Trigger
- 20. OpenShift CI /CDPipeline 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 mvnclean 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 Buildjobs 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"
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- 28. Key Factors: Automationand Fast Feedback Customer, PO Dev Production DeploymentIdea, Feature, Bug Fast, qualified Feedback
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- 30. Q & A 01.6.2016in BE 15.6.2016 in ZH Free APPUiO OpenShift Techlab
- 31.