Provision EKS cluster with microservices application

[pulumi]

Summary

This PR provisions a complete EKS cluster with a microservices application stack including HTTPS ingress, autoscaling, and CI/CD pipeline.

Infrastructure Created

EKS Cluster

• Cluster: 3 t3.small nodes in default VPC
• Region: us-west-2
• OIDC Provider: Enabled for IAM roles for service accounts

Microservices Application

• Frontend: React app (nginx) with 2 replicas
• Backend API: Node.js service with 2-10 replicas (HPA enabled)
• Redis Cache: Single replica for caching

Networking & Security

• NGINX Ingress Controller: LoadBalancer service for external access
• cert-manager: Automated Let's Encrypt HTTPS certificates
• Ingress Routes:
  • / → Frontend
  • /api → Backend API

Autoscaling

• Horizontal Pod Autoscaler for backend:
  • Min replicas: 2
  • Max replicas: 10
  • Target CPU: 70%

CI/CD

• GitHub Actions workflow configured:
  • Preview on pull requests
  • Deploy on merge to main
  • Uses AWS OIDC for secure authentication

Configuration Required

Before deploying, set these configuration values:

pulumi config set domain your-domain.com
pulumi config set letsencryptEmail your-email@example.com

And configure GitHub secrets:

• PULUMI_ACCESS_TOKEN: Your Pulumi access token
• AWS_ROLE_ARN: AWS IAM role ARN for OIDC

Deployment Status

✅ Successfully deployed with pulumi up

• 42 resources created
• Cluster name: eks-cluster-eksCluster-20a63c6
• All services running

Next Steps

1. Point your domain DNS to the load balancer (get hostname with the exported kubectl command)
2. Wait 1-2 minutes for Let's Encrypt certificate issuance
3. Access your application at https://your-domain.com
4. Replace sample container images with your actual React and Node.js applications

Files Changed

• index.ts: Complete infrastructure definition
• package.json: Dependencies for EKS and Kubernetes
• .github/workflows/pulumi.yml: CI/CD pipeline
• README.md: Documentation and setup instructions
• Pulumi.dev.yaml: Stack configuration with ESC environment