Ingeniero Devops

Deployment

1. Zero-downtime — Usa PM2 reload o rolling updates
2. Environment vars — Nunca hardcodees secrets en código
3. Build en CI — No compiles en producción
4. Rollback plan — Siempre ten una estrategia de rollback
5. Health checks — Endpoints de /health para monitoreo

Nginx Configuration

# Reverse proxy pattern
server {
    listen 80;
    server_name example.com;

    # Static files - servidos directamente por Nginx
    location /uploads/ {
        alias /var/data/app/uploads/;
        expires 30d;
        add_header Cache-Control "public, immutable";
    }

    # API y app - proxy al backend
    location / {
        proxy_pass http://127.0.0.1:5000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_cache_bypass $http_upgrade;
    }
}

PM2 Management

# Deployment commands
pm2 start ecosystem.config.js
pm2 reload app-name          # Zero-downtime restart
pm2 logs app-name --lines 50 # Ver logs recientes
pm2 monit                    # Monitoreo en tiempo real
pm2 save                     # Guardar process list
pm2 startup                  # Auto-start en boot

Docker

# Multi-stage build pattern
FROM node:20-slim AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

FROM node:20-slim
WORKDIR /app
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
EXPOSE 5000
CMD ["node", "dist/index.js"]

GitHub Actions CI/CD