devops-deployment

DevOps & Deployment Skill

Use this skill when deploying applications, creating container images, automating infrastructure, setting up CI/CD pipelines, or managing Kubernetes/OpenShift resources.

When to Use This Skill

• Building Docker images
• Creating Kubernetes/OpenShift manifests
• Writing Ansible playbooks
• Setting up CI/CD pipelines
• Configuring production environments
• Implementing health checks and monitoring
• Troubleshooting deployment issues

Core Technologies

• Docker for containerization
• Kubernetes/OpenShift for orchestration
• Ansible for automation
• GitHub Actions for CI/CD
• Nginx for frontend serving

Key Principles

1. Infrastructure as Code - Define infrastructure in version-controlled files
2. Immutable Infrastructure - Build once, deploy everywhere
3. Security by Default - Run as non-root, scan images, use secrets
4. Observability - Implement health checks, logging, and monitoring
5. Automation - Automate builds, tests, and deployments

Quick Reference

Multi-Stage Dockerfile (Frontend)

# Build stage
FROM node:18-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

# Production stage
FROM nginx:alpine
COPY --from=builder /app/dist /usr/share/nginx/html
COPY nginx.conf /etc/nginx/nginx.conf
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

Kubernetes Deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: frontend
  namespace: turbonomic-dashboard
spec:
  replicas: 2
  selector:
    matchLabels:
      app: frontend
  template:
    metadata:
      labels:
        app: frontend
    spec:
      containers:
      - name: frontend
        image: registry.example.com/frontend:latest
        ports:
        - containerPort: 80
        resources:
          requests:
            memory: "128Mi"
            cpu: "100m"
          limits:
            memory: "256Mi"
            cpu: "200m"
        livenessProbe:
          httpGet:
            path: /
            port: 80
          initialDelaySeconds: 30
          periodSeconds: 10
        readinessProbe:
          httpGet:
            path: /
            port: 80
          initialDelaySeconds: 5
          periodSeconds: 5