Overview

This PR adds complete Terraform infrastructure for deploying the voting app to AWS production.

Changes

• VPC & Networking: VPC with public/private subnets across 2 AZs, Internet Gateway, NAT Gateway, and route tables
• Security: Security groups for ALB, ECS tasks, RDS, and ElastiCache with proper ingress/egress rules
• Load Balancing: Application Load Balancer with listeners for vote app (port 80) and result app (port 8080)
• Container Orchestration: ECS Fargate cluster with task definitions and services for vote, result, and worker containers
• Databases: RDS Postgres (replacing local db container) and ElastiCache Redis (replacing local redis container)
• IAM: Task execution role and task role with appropriate permissions for CloudWatch logging
• Monitoring: CloudWatch alarms for ECS CPU utilization and RDS connection counts
• Logging: CloudWatch log group for container logs

Infrastructure Outputs

• Vote app: http://voting-app-alb-1286019119.us-east-1.elb.amazonaws.com
• Result app: http://voting-app-alb-1286019119.us-east-1.elb.amazonaws.com:8080
• RDS endpoint: voting-app-postgres.caho6aeqymqv.us-east-1.rds.amazonaws.com
• Redis endpoint: voting-app-redis.l0by20.0001.use1.cache.amazonaws.com

Testing

Infrastructure deployed and tested. Vote app is functional and accepting votes.

Files Added

• terraform/main.tf
• terraform/variables.tf
• terraform/vpc.tf
• terraform/security_groups.tf
• terraform/alb.tf
• terraform/ecs.tf
• terraform/iam.tf
• terraform/rds.tf
• terraform/elasticache.tf
• terraform/cloudwatch.tf
• terraform/outputs.tf