DevOps & CI/CD
Stage Guidance
Plan Stage
Focus: Plan CI/CD pipeline architecture and infrastructure requirements. Consider deployment strategies and monitoring needs.
Activities:
- •Define pipeline stages (build, test, deploy)
- •Identify infrastructure requirements
- •Plan deployment strategy (rolling, blue-green, canary)
- •Consider monitoring and alerting needs
- •Plan secret management approach
Ready for Code when:
- • Pipeline architecture is documented
- • Deployment strategy is chosen and justified
- • Infrastructure requirements are identified
- • Monitoring approach is defined
Code Stage
Focus: Implement CI/CD pipelines and infrastructure as code. Follow best practices for containerization and deployment automation.
Activities:
- •Configure CI/CD pipeline stages
- •Implement infrastructure as code (Terraform, CloudFormation)
- •Create Dockerfiles with security best practices
- •Set up monitoring and alerting
- •Configure secret management
- •Implement deployment automation
Ready for Review when:
- • Pipeline runs on every commit
- • Tests run before deployment
- • Deployments are automated
- • Infrastructure is version controlled
- • Secrets are managed securely
- • Monitoring is in place
Review Stage
Focus: Verify pipeline reliability, security, and operational readiness. Ensure rollback procedures work and documentation is complete.
Activities:
- •Verify pipeline runs successfully end-to-end
- •Test rollback procedures
- •Review security configurations
- •Validate monitoring and alerts
- •Check documentation completeness
Ready for Complete when:
- • Pipeline is tested and reliable
- • Rollback procedure is documented and tested
- • Alerts are configured and tested
- • Runbooks exist for common issues
Reference
CI/CD Pipeline Stages
Build
- •Install dependencies
- •Compile/transpile code
- •Generate artifacts
- •Cache dependencies for speed
Test
- •Run unit tests
- •Run integration tests
- •Static analysis and linting
- •Security scanning
Deploy
- •Deploy to staging environment
- •Run smoke tests
- •Deploy to production
- •Verify deployment health
Infrastructure as Code
Terraform
hcl
# Define resources declaratively
resource "aws_instance" "example" {
ami = "ami-0c55b159cbfafe1f0"
instance_type = "t2.micro"
}
Docker
dockerfile
FROM node:18-alpine WORKDIR /app COPY package*.json ./ RUN npm ci --only=production COPY . . CMD ["node", "server.js"]
Deployment Strategies
Rolling Deployment
- •Gradual replacement of instances
- •Zero downtime
- •Easy rollback
Blue-Green Deployment
- •Two identical environments
- •Switch traffic atomically
- •Fast rollback
Canary Deployment
- •Route small percentage to new version
- •Monitor for issues
- •Gradually increase traffic