Clase 03 — Mapas y Diccionarios

Mapas básicos

persona:
  nombre: RoxsRoss
  edad: 30
  rol: DevOps Engineer
  activo: true

Mapas en línea

coordenadas: {lat: -34.6037, lon: -58.3816}
dimensiones: {ancho: 100, alto: 50}

Mapas anidados

empresa:
  nombre: TechCorp
  fundada: 2020
  direccion:
    calle: "Av. Principal 123"
    ciudad: "Buenos Aires"
    pais: Argentina
  contacto:
    email: info@techcorp.com
    redes:
      twitter: "@techcorp"
      github: "techcorp"

Ejemplo: Docker Compose completo

version: "3.8"
services:
  frontend:
    build:
      context: ./frontend
      dockerfile: Dockerfile
    ports:
      - "3000:3000"
    environment:
      REACT_APP_API_URL: http://backend:8080
    depends_on:
      - backend

  backend:
    build: ./backend
    ports:
      - "8080:8080"
    environment:
      DB_HOST: postgres
      DB_PORT: "5432"
      DB_PASS: ${DB_PASSWORD}
    depends_on:
      postgres:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
      interval: 30s
      timeout: 10s
      retries: 3

  postgres:
    image: postgres:16-alpine
    environment:
      POSTGRES_DB: app_db
      POSTGRES_USER: admin
      POSTGRES_PASSWORD: ${DB_PASSWORD}
    volumes:
      - postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U admin"]
      interval: 10s
      retries: 5

volumes:
  postgres_data:

networks:
  app-network:
    driver: bridge

Ejemplo: Kubernetes Deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mi-api
  namespace: produccion
  labels:
    app: mi-api
spec:
  replicas: 3
  selector:
    matchLabels:
      app: mi-api
  template:
    metadata:
      labels:
        app: mi-api
    spec:
      containers:
        - name: api
          image: registry.example.com/mi-api:2.0
          ports:
            - containerPort: 8080
          resources:
            requests:
              cpu: "250m"
              memory: "256Mi"
            limits:
              cpu: "500m"
              memory: "512Mi"
          env:
            - name: DB_HOST
              valueFrom:
                configMapKeyRef:
                  name: db-config
                  key: host
            - name: DB_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: db-secret
                  key: password
          livenessProbe:
            httpGet:
              path: /health
              port: 8080
            initialDelaySeconds: 15
            periodSeconds: 20

Ejemplo: Ansible Playbook

---
- name: Configurar servidor web
  hosts: webservers
  become: true
  vars:
    app_port: 8080
    app_user: deploy
  tasks:
    - name: Instalar paquetes
      apt:
        name: [nginx, python3, python3-pip]
        state: present
    - name: Crear usuario
      user:
        name: "{{ app_user }}"
        shell: /bin/bash
    - name: Copiar config Nginx
      template:
        src: templates/nginx.conf.j2
        dest: /etc/nginx/sites-available/mi-app
      notify: Reiniciar Nginx
  handlers:
    - name: Reiniciar Nginx
      service:
        name: nginx
        state: restarted