Automating Devops With Gitlab Ci/cd Pipelines Read Online Guide

DevOps emerged to bridge the gap between development and operations. Its core philosophy is — automating builds, tests, deployments, and monitoring. Among the many CI/CD tools available today (Jenkins, CircleCI, GitHub Actions), GitLab CI/CD has emerged as a powerful, integrated, and scalable solution. Why? Because GitLab isn't just a Git repository manager. It's a complete DevOps platform with CI/CD built directly into the same application that hosts your code.

build: stage: build-image image: docker:20.10.16 services: - docker:20.10.16-dind script: - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY - docker build -t $IMAGE_TAG . - docker push $IMAGE_TAG only: - main automating devops with gitlab ci/cd pipelines read online

(set in GitLab UI → Settings → CI/CD → Variables) can be masked or protected for specific branches. 3.2 Conditional Logic with rules The only/except keywords are deprecated in favor of rules . DevOps emerged to bridge the gap between development

curl --request POST --form "token=$CI_JOB_TOKEN" --form "ref=main" "https://gitlab.com/api/v4/projects/123/trigger/pipeline" This allows external systems (monitoring, chatops) to start pipelines. DevOps automation must include security. GitLab provides native security scanning. SAST (Static Application Security Testing) Add to your pipeline: build: stage: build-image image: docker:20

GitLab then shows a dashboard of deployments, and you can roll back from the UI. For secure cluster access, use the GitLab Agent instead of storing kubeconfig .

Now every commit to main automatically builds, tags, scans, and pushes a Docker image. CI/CD isn't just about deployment; it's about confidence . GitLab automates multiple testing layers. 5.1 Unit Tests & Coverage unit_tests: stage: test script: - pytest --cov=myapp tests/ coverage: '/TOTAL.+ ([0-9]1,3%)/' artifacts: reports: coverage_report: coverage_format: cobertura path: coverage.xml 5.2 Linting & Static Analysis lint: stage: test script: - flake8 myapp/ - black --check myapp/ 5.3 Merge Request Pipelines Enable pipelines for merge requests. Add:

container_scan: stage: scan image: docker:latest script: - docker run --rm $IMAGE_TAG trivy image $IMAGE_TAG