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- 2. Agenda - DevOps - Whatis CI/CD - Setup Gitlab CI - Configure CI Pipeline - Live Demo
- 3. DevOps DevOps is aset of software development practices that combine software development (Dev) and information-technology operations (Ops) to shorten the systems-development life cycle while delivering features, fixes, and updates frequently in close alignment with business objectives.
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- 5. CI Continuous Integration Continuous Integrationworks to integrate code from your team in a shared repository. Developers share their new code in a Merge (Pull) Request, which triggers a pipeline to build, test, and validate the new code before merging the changes in your repository.
- 6. CD Continuous Deployment Continuous Deliverydelivers CI validated code to your application. Together, CI and CD accelerate how quickly your team can deliver results for your customers and stakeholders. CI helps you catch and reduce bugs early in the development cycle, and CD moves verified to your applications faster.
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- 9. Why Gitlab CI -Integrated: GitLab CI/CD is part of GitLab - Open source: CI/CD is a part of both the open source GitLab - Seamless: Part of the single GitLab application - Scalable: Tests run distributed on separate machines - Faster results: Each build can be split in multiple jobs that run in parallel on multiple machines - Optimized for delivery: multiple stages, manual deploy gates, environments, and variables - Easy to learn
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- 11. Gitlab Runner - Toperform the actual build, you need to install GitLab Runner which is written in Go. - It can run on any platform for which you can build Go binaries, including Linux, OSX, Windows, FreeBSD and Docker. - It can test any programming language including .Net, Java, Python, C, PHP and others. - GitLab Runner has many features, including autoscaling, great Docker support, and the ability to run multiple jobs concurrently.
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- 13. Setup Gitlab Runners Seemy setup scripts https://github.com/ondrejsika/gitlab-ci-runner # create runner docker run -d --name gitlab-runner --restart always -v /var/run/docker.sock:/var/run/docker.sock -v /builds:/builds gitlab/gitlab-runner:latest
- 14. Get Runner RegistrationToken Go to Admin -> Runners
- 15. Setup Gitlab Runners #register runner to Gitlab docker exec gitlab-runner gitlab-runner register --non-interactive --url $GITLABCI_URL --registration-token $GITLABCI_TOKEN --name $RUNNER_NAME --executor docker --docker-image docker:git --docker-volumes '/var/run/docker.sock:/var/run/docker.sock' --docker-volumes '/builds:/builds'
- 16. We are readyto use CI
- 17. How to useGitlab CI - Gitlab CI configuration is stored inside of the repository in file .gitlab-ci.yml - If repository contains .gitlab-ci.yml, CI run automatically - You can work on code & CI together and merge them together - Smallest unit you can run is job, you can group jobs to stages (jobs run in parallel in stage, stages run in defined order) and stages create pipeline - You can build binaries, Docker images, deploy to Kubernetes, track environments and much more.
- 18. First Gitlab CIJob # .gitlab-ci.yml job: script: echo Hello World from Gitlab CI!
- 19. Stages # .gitlab-ci.yml stages: - build -deploy build: stage: build script: docker-compose build && docker-compose push deploy: stage: deploy script: helm template --set TAG=$CI_COMMIT_SHA helm/hello-world | kubectl apply -f
- 20. Variables - Secret variablesare defined in Gitlab - Some variables set CI runtime - Public variables are defined in .gitlab-ci.yml
- 21. Variables CI CI_PROJECT_NAME, CI_PROJECT_PATH_SLUG CI_COMMIT_REF_NAME, CI_COMMIT_REF_SLUG CI_COMMIT_SHA,CI_COMMIT_TAG CI_PIPELINE_ID, CI_JOB_ID CI_REGISTRY, CI_REGISTRY_USER, CI_REGISTRY_PASSWORD ... https://docs.gitlab.com/ce/ci/variables/README.html
- 22. Artifacts Artifacts is alist of files and directories which are attached to a job after it completes successfully.
- 23. Artifacts job: script: make build artifacts: name:"$CI_JOB_NAME" paths: - binaries/ when: on_failure https://docs.gitlab.com/ce/ci/yaml/README.html#artifacts
- 24. Docker - Fully supported -Easiest way how to create build environment - Easiest way how to run and distribute your software
- 25. Docker Environment image: ondrejsika/ci job: image:ondrejsika/ci-go script: go build server.go
- 26. Docker job: script: - 'docker login$CI_REGISTRY -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD' - docker build -t $CI_REGISTRY_IMAGE . - docker push $CI_REGISTRY_IMAGE
- 27. Environments Environment is usedto define that a job deploys to a specific environment. If environment is specified and no environment under that name exists, a new one will be created automatically.
- 28. Environment deploy: script: echo 'Deploy!' environment: name:$CI_COMMIT_REF_SLUG url: https://$CI_COMMIT_REF_SLUG.example.com
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- 30. Auto vs ManualDeployments auto_deploy_job: script: echo Auto Deploy! environment: name: deployment-$CI_PIPELINE_ID manual_deploy_job: when: manual script: echo Manual Deploy! environment: name: deployment-$CI_PIPELINE_ID
- 31. Stop Deployment deploy_job: stage: deploy script:echo Deploy! environment: name: deployment-$CI_PIPELINE_ID on_stop: stop_deploy_job stop_deploy_job: stage: deploy script: echo Stop! when: manual environment: name: deployment-$CI_PIPELINE_ID action: stop
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- 34. Resources - Moje UkazkyGitlab CI https://ondrej-sika.cz/repozitare/#gitlab-ci - Moje skoleni Gitlab CI https://ondrej-sika.cz/skoleni/gitlab-ci/ - https://docs.gitlab.com/ce/ci/ - https://docs.gitlab.com/ce/ci/yaml/ - https://docs.gitlab.com/ce/ci/quick_start/
- 35. Thank you &Questions Ondrej Sika email: ondrej@sika.io web: https://ondrej-sika.cz twitter: @ondrejsika linkedin: /in/ondrejsika/ Slides: https://sika.link/cncf-sk-ci