DevOps & Cloud Infrastructure Skill

Quick Start – Docker

FROM node:18-alpine

WORKDIR /app

COPY package*.json ./
RUN npm ci --only=production

COPY . .

EXPOSE 3000

CMD ["node", "server.js"]

# Build image
docker build -t myapp:1.0 .

# Run container
docker run -p 3000:3000 myapp:1.0

Core Technologies

Containerization

• Docker (images, containers, compose)
• Container registries
• Multi-stage builds
• Container security

Orchestration

• Kubernetes (K8s)
• Helm package management
• Operators and controllers
• GitOps (ArgoCD, Flux)

Cloud Platforms

• AWS: EC2, S3, RDS, Lambda, ECS, EKS
• GCP: Compute Engine, Cloud Run, Dataflow
• Azure: VMs, App Service, AKS

CI/CD

• GitHub Actions
• GitLab CI/CD
• Jenkins
• CircleCI

Infrastructure as Code

• Terraform
• CloudFormation
• Ansible
• Pulumi

Monitoring

• Prometheus + Grafana
• ELK Stack (Elasticsearch, Logstash, Kibana)
• DataDog, New Relic
• CloudWatch

Best Practices

1. Automation – Automate everything
2. Infrastructure as Code – Version control infrastructure
3. Monitoring – Comprehensive observability
4. Security – Defense in depth
5. Documentation – Keep runbooks current
6. Testing – Test infrastructure changes
7. Versioning – Version all configurations
8. Disaster Recovery – Regular DR testing

Resources

• Kubernetes Documentation
• Docker Documentation
• Terraform Documentation
• AWS Documentation