cicd

What I do

• Design and implement CI/CD pipelines
• Automate build, test, and deployment processes
• Integrate security scanning into pipelines
• Configure deployment strategies (blue-green, canary, rolling)
• Set up artifact management and version control
• Build monitoring and feedback loops for deployments

When to use me

• When establishing DevOps practices
• When automating software delivery
• When implementing GitOps workflows
• When integrating automated testing
• When setting up release automation
• When building deployment infrastructure

Key Concepts

GitHub Actions Pipeline

name: CI/CD Pipeline

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'
      
      - name: Install dependencies
        run: npm ci
      
      - name: Run linter
        run: npm run lint
      
      - name: Run tests
        run: npm test
      
      - name: Build
        run: npm run build
      
      - name: Build Docker image
        run: |
          docker build -t myapp:${{ github.sha }} .
          docker push myapp:${{ github.sha }}

  deploy:
    needs: build
    if: github.ref == 'refs/heads/main'
    runs-on: ubuntu-latest
    steps:
      - name: Deploy to production
        run: |
          kubectl set image deployment/myapp \
            myapp=myapp:${{ github.sha }}

GitLab CI Pipeline

stages:
  - build
  - test
  - security
  - deploy

build:
  stage: build
  script:
    - npm ci
    - npm run build
  artifacts:
    paths:
      - dist/

test:
  stage: test
  script:
    - npm test
  coverage: /Coverage: \d+\.\d+%/

security:
  stage: security
  script:
    - npm audit
    - trivy image myapp:latest

deploy:
  stage: deploy
  script:
    - kubectl apply -f k8s/
  only:
    - main

Pipeline Best Practices

• Fast feedback: Run fastest tests first
• Parallel execution: Distribute tests across runners
• Caching: Cache dependencies and build artifacts
• Infrastructure as Code: Version control pipeline configs
• Secret management: Use secure vaults for credentials
• Idempotency: Pipelines should be re-runnable
• Monitoring: Track pipeline health and duration

Security Integration (DevSecOps)

security-scan:
  stage: security
  script:
    - trivy fs --severity HIGH,CRITICAL .
    - snyk test
    - checkov -d .
    - semgrep --config=auto .
  allow_failure: false

Deployment Strategies

• Blue-Green: Two identical environments, instant switch
• Canary: Gradually shift traffic, metric-based rollout
• Rolling: Update instances incrementally
• Feature Flags: Toggle features without deployment
• GitOps: Declarative infrastructure with Git