Continuous Integration/Deployment with Gitlab CI
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This document discusses continuous integration/deployment with Gitlab CI. It provides an introduction and overview of continuous integration, continuous delivery, and deployment. It then discusses Gitlab and Gitlab CI in more detail, including stages and pipelines, the UI, runners, using CI as code, and examples for Node.js + React, Java + Angular, and Electron applications. The sources section lists links and image sources for additional information.
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Continuous Integration/Deployment with Gitlab CI
- 2. Who we are? David Hahn, Dipl-Inf.(FH) Senior Software Engineer [email protected] Denis Filimonov, B.Sc Software Engineer d.fi[email protected] 2
- 3. Agenda - Introduction - Continuous Integration - Continuous Delivery and Deployment - About Gitlab - Gitlab CI - About Gitlab CI - Stages and Pipelines - UI - Runners - CI as Code - Show Cases - Node.js + React - Java + Angular - Electron 3
- 4. Continuous Integration Definition Continuous Integration is a software development practice where members of a team integrate their work frequently, usually each person integrates at least daily - leading to multiple integrations per day. Each integration is verified by an automated build (including test) to detect integration errors as quickly as possible. Martin Fowler 4
- 5. Continuous Integration How and Why? - Maintain a single source repository - Automate the build - Make your build self-testing - Keep the build fast - Keep the build on the CI machine - Test in a clone of production environment - Make it easy for everyone to get the latest executable - Make the process transparent for everyone How: - Detect development problems earlier - Reduce risks of cost, schedule and budget - Find and remove bugs earlier - Deliver new features and get user feedback more rapidly Why: 5
- 6. Continuous Delivery is a development discipline where you build software in such a way that the software can be released to production at any time. Continuous Deployment means that every change goes through the pipeline and automatically gets put into production, resulting in many production deployments every day. Martin Fowler Continuous Delivery/Deployment Definition 6
- 7. Continuous Delivery/Deployment How and Why? - Continuously integrating the software done by the development team - Run automated tests - Push build to production-like environment - Can release one version at the push of the button How: - Reduce deployment risks - Change the version in production more rapidly - Get the feedback earlier Why: 7
- 9. Gitlab What is it? - Git based hosting and collaboration platform - Open source, freemium - Hosted (free) or on premise - Actively maintained 9 Git Repository User Management CI Wiki Issue Boards Container Registry Time Tracker Mattermost integration
- 10. Gitlab CI What and Why? - Fully integrated with Gitlab - Integrated since v. 8.0 - Build scripts hosted in repo - Git hooks - Hosted (free) or on premise - Actively maintained What: - Code and build scripts in the same repo - Easy to start - Scalable - Isolated test environment Why: 10
- 11. Gitlab CI Pipelines and Stages A pipeline is a group of jobs that get executed in stages(batches). All of the jobs in a stage are executed in parallel, and if they all succeed, the pipeline moves on to the next stage. If one of the jobs fails, the next stage is not executed. Pipelines are defined in .gitlab-ci.yml by specifying jobs in stages: 11
- 12. Gitlab CI UI Pipeline status: Job status: 12
- 13. Gitlab CI Runners Runner is an application, that processes builds. It receives commands from Gitlab CI. It is possible to tag runners so jobs run on runners which can process them (e.g. different OS). - Works with Linux, Windows and OSX - Works as a Docker container - Shared or specific - Multiple Executors: - Docker -> In Docker container - Shell -> Locally - Docker SSH -> In Docker container over SSH - SSH -> Remote using SSH 13
- 14. Gitlab CI CI as Code 1414 Define Stages .gitlab-ci.yml in root Gitlab CI Variables Define environment Example
- 15. Gitlab CI CI as Code: Stage Variables Before script Script After Script Artifacts Only/ Except Tags When 15
- 16. 16
- 17. Show Case Node.js + React - Using of docker runner - Using of Gitlab Pages - Using of Node.js for Tests and Build - Deploying Single Page Application without Backend - Using of Gitlab CI Cache 17
- 18. Show Case Java + Angular - Using of shell runner - Connecting the containers in docker network - Using of docker-compose for simple management of containers 18
- 19. Show Case Java + Angular: Architecture 19
- 20. Show Case Java + Angular: Docker-Compose Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application’s services. Then, with a single command, you create and start all the services from your configuration. 20
- 21. Show Case Electron - Build on 3 platforms with different runners - Artifacts Api - Build Trigger Api 21
- 23. Gitlab CI vs Jenkins - Parallel builds - Docker integration - Fully Integrated in Gitlab - Configurability per branch already on jobs-level - Permission inheritance (Repository Manager) - Highly customisable - Community. A lot of resources and tutorials - Supports multiple version control systems - Easy to get up and running - Cross-platform - Build-in time based execution - UI and Dashboard - Report integration Pros: - Integrated only in Gitlab - Poor quality of some plug-ins - High overhead (setup and host). Contras: 23
- 24. Environments Auto DevOps Review Apps Trigger pipelines through the GitLab API Trigger pipelines on a schedule Deploy Boards - Check the current health … 24 Gitlab CI Another features But not today!
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- 27. Sources Links: - https://about.gitlab.com/features/gitlab-ci-cd/ - https://www.inovex.de/blog/modern-cicd-with-jenkins-2-and-gitlab-ci-comparison/ - https://martinfowler.com/ - https://docs.docker.com/compose/ - https://www.docker.com 27 Pictures: - http://sqlity.net/wp-content/uploads/2015/01/Benefits_of_Continuous_Integration.png - https://www.zuehlke.com/blog/app/uploads/2015/11/geek-and-poke.png - http://electric-cloud.com/wp-content/uploads/use-case-graphic_continuous-delivery.png - https://docs.gitlab.com/ee/ci/img/cicd_pipeline_infograph.png - https://image.slidesharecdn.com/ranchergitlab320171006-171007014521/95/rancher-gitlab-3-21-638.jpg? cb=1507341238 - https://i.pinimg.com/originals/2b/be/4b/2bbe4b9818440b610eadd30195fff3fa.gif - https://denibertovic.com/talks/supercharge-development-env-using-docker/img/what_is_docker.png - http://blog.arungupta.me/wp-content/uploads/2015/12/docker-networking.png - https://media.serious.io/98dadb4361c5f588/static.gif - http://geekandpoke.typepad.com/.a/6a00d8341d3df553ef0134887d41fd970c-pi