YAML Examples

apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app
  labels:
    app: my-app
spec:
  replicas: 3
  selector:
    matchLabels:
      app: my-app
  template:
    metadata:
      labels:
        app: my-app
    spec:
      containers:
        - name: my-app
          image: my-app:1.0.0
          ports:
            - containerPort: 8080
          env:
            - name: NODE_ENV
              value: production
          resources:
            limits:
              memory: "256Mi"
              cpu: "500m"

version: '3.8'
services:
  web:
    build: .
    ports:
      - "3000:3000"
    environment:
      - NODE_ENV=development
      - DATABASE_URL=postgres://db:5432/myapp
    depends_on:
      - db
      - redis
    volumes:
      - .:/app
      - /app/node_modules

  db:
    image: postgres: 14
    environment:
      POSTGRES_USER: admin
      POSTGRES_PASSWORD: secret
      POSTGRES_DB: myapp
    volumes:
      - postgres_data:/var/lib/postgresql/data

  redis:
    image: redis:alpine
    ports:
      - "6379:6379"

volumes:
  postgres_data:

name: CI/CD Pipeline

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

jobs:
  test:
    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 tests
        run: npm test
      
      - name: Build
        run: npm run build

  deploy:
    needs: test
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'
    steps:
      - name: Deploy to production
        run: echo "Deploying..."

apiVersion: v1
kind: Service
metadata:
  name: my-app-service
  labels:
    app: my-app
spec:
  type: LoadBalancer
  ports:
    - port: 80
      targetPort: 8080
      protocol: TCP
      name: http
  selector:
    app: my-app
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: my-app-config
data:
  database_host: "db.example.com"
  cache_enabled: "true"
  log_level: "info"

---
- name: Configure Web Servers
  hosts: webservers
  become: yes
  vars:
    app_port: 3000
    node_version: "20"

  tasks:
    - name: Update apt cache
      apt:
        update_cache: yes
        cache_valid_time: 3600
    - name: Install required packages
      apt:
        name:
          - nginx
          - git
          - curl
        state: present

    - name: Copy nginx config
      template:
        src: nginx.conf.j2
        dest: /etc/nginx/sites-available/default
      notify: Restart nginx

  handlers:
    - name: Restart nginx
      service:
        name: nginx
        state: restarted

stages:
  - build
  - test
  - deploy

variables:
  NODE_IMAGE: node:20-alpine

build:
  stage: build
  image: $NODE_IMAGE
  script:
    - npm ci
    - npm run build
  artifacts:
    paths:
      - dist/
    expire_in: 1 hour

test:
  stage: test
  image: $NODE_IMAGE
  script:
    - npm ci
    - npm run test:coverage
  coverage: '/All files[^|]*\|[^|]*\s+([\d\.]+)/'

deploy_production:
  stage: deploy
  image: alpine
  only:
    - main
  script:
    - echo "Deploying to production..."
  environment:
    name: production
    url: https://example.com