Continuous Integration and Deployment with Jenkins for PCF
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The document presents an overview of Jenkins, an automation server for continuous integration and deployment, highlighting its ease of setup, extensive documentation, and support for pipeline as code. It discusses the benefits of CI pipelines, multibranch workflows, and the integration with container runtimes like Docker and Kubernetes. Additionally, it emphasizes the importance of using Jenkins' visual pipeline editor and built-in features for effectively managing and tracking jobs.
Continuous Integration and Deployment with Jenkins for PCF
- 1. Andrei Krasnitski Cloud Foundry Engineer ALTOROS @altoros Continuous Integration and Deployment with Jenkins for PCF @infra-red
- 2. 2 ABOUT JENKINS An extensible automation server built on the JVM with hundreds of plugin to support nearly every continuous integration, delivery and deployment pipeline imaginable
- 3. 3 ABOUT ME • Cloud Foundry Engineer at Altoros Andrei Krasnitski • Long time Jenkins user and community member • Contributor on various open-source projects @infra-red @andreikrasnitski • Maintainer of the Log Search project
- 4. 4 WHY JENKINS? • Easy setup Procedure • Cross system support • Answers to most of the questions are available on the WEB • Extensive Documentation and Tutorials • Distributed builds • Full Transparency and Total Control
- 5. 5 LEARNING CURVE Scripts, Jenkins CRON with UI Automation flows based on plugins Custom plugins, Advanced features
- 6. 6 PIPELINE AS CODE DESCRIBING JENKINS JOBS VIA CODE
- 7. 7 BENEFITS? • CI pipelines + project source code are in a one place • Configuration change tracking • Built-in global library to share scripts, functions, variables across jobs • Extend the DSL with your own steps
- 8. 8 PIPELINE SAMPLE • Syntax: Groovy-based DSL • Store job description on SCM, e.g. jenkinsfile in the repo’s root • https://tiny.cc/jenkins-pipeline
- 9. 9 SNIPPET GENERATOR • First steps are always the hardest • Create your code for individual steps • Discover all the steps provided by plugin
- 10. 10 PIPELINE EDITOR • Edit the Jenkinsfile for a specific branch directly from the Web user interface using the Visual Pipeline Editor
- 11. 11 TOOLS • Blue Ocean editor • Command-line pipeline linter • Jenkins Pipeline Unit Testing Framework • ”Replay” function
- 12. 12 MULTIBRANCH WORKFLOW • Job configurations contain only the reference to the SCM • Jenkins takes pipeline from jenkinsfile in SCM • Pull-request builds • Jenkins creates separate subtasks for branches, builds and report results separately • Organization Folders
- 14. 14 CONTAINER RUNTIME Docker Kubernetes Apache Mesos Docker is an open platform for developers and sysadmins to build, ship, and run distributed applications, whether on laptops, data center VMs, or the cloud. Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications. Apache Mesos is an open-source project to manage computer clusters.
- 15. 15 BENEFITS? • No need for manual worker nodes management • All builds run in stateless infrastructure • Restriction of services • Isolation of resources
- 16. 16 DOCKER SLAVES • No need to install software on Jenkins nodes • Use multiple versions of the same tool • Possibility to use existing containers based on Dockerfile content
- 18. 18 SUMMARY • Finally nice pipelines! • The way to go with Jenkins • Many of Jenkins plugins already compatible • Pipeline as code! • Versioned • Code sharing • New UI stuff is still broken • Endless possibilities – can be complex and painful