AWS ECS Blue/Green Deployment Lab 🚀

This project demonstrates a production-grade CI/CD workflow for containerized applications using Amazon ECS (Fargate) and AWS CodeDeploy.

📐 Architecture Diagram

The following diagram represents the cloud infrastructure and deployment flow:

graph TD
    subgraph "Public Internet"
        User((User))
    end

    subgraph "AWS Cloud (VPC)"
        ALB[Application Load Balancer]
        
        subgraph "ECS Cluster"
            Service[ECS Service: my-service]
            TaskBlue[Task Set: Blue - v5]
            TaskGreen[Task Set: Green - v6]
        end
        
        subgraph "Deployment Control"
            CD[AWS CodeDeploy]
            TG1[(Target Group 1: Blue)]
            TG2[(Target Group 2: Green)]
        end
    end

    subgraph "Registry"
        ECR[(Amazon ECR)]
    end

    User --> ALB
    ALB -- Port 80 --> TG1
    ALB -- Port 8080 --> TG2
    TG1 --> TaskBlue
    TG2 --> TaskGreen
    CD -- "Traffic Shift" --> ALB
    ECR -- "Image Pull" --> TaskGreen

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✅ Deployment Validation & Logs

Note: Infrastructure was decommissioned post-testing for cost optimization.

1. Verifying Running Tasks

$ aws ecs list-tasks --cluster ecs-cluster --service-name my-service --desired-status RUNNING
{
    "taskArns": [
        "arn:aws:ecs:us-east-1:582726398736:task/ecs-cluster/e1c4d47f494643938a0a5b7eddb03910"
    ]
}

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Author: Adetunji Mathew Babatunde Certifications: AWS SAA, AWS DVA, AWS AI Practitioner.