Orchestrating CI/CD Workflows for AWS Fargate Using GitHub Actions

A comprehensive project involved setting up an automated containerized application on Amazon ECS Fargate using Terraform, with Docker images pushed to Amazon ECR. I implemented secure private networking, Blue-Green deployments, and encrypted logging via CloudWatch and KMS.

 •  Provision ECS Fargate tasks within private subnets using Terraform to enhance security and isolation.
 •  Configure VPC Interface Endpoints for Amazon ECR and Amazon S3 to ensure all data traffic remains within the AWS network, reducing exposure to the public internet.
 •  Build and containerize the application using Docker, and securely push the image to Amazon Elastic Container Registry (ECR).
 •  Deploy the application to Amazon ECS services , with integrated health checks and enable centralized monitoring through Amazon CloudWatch Logs.
 •  Implement AWS Key Management Service (KMS) encryption , to secure CloudWatch log data and ECR image layers at rest.
 •  Integrate AWS CodeDeploy to orchestrate Blue-Green deployments , on ECS Fargate, facilitating seamless and controlled traffic shifting between application environments.
 •  Leverage ECS Fargate’s serverless container platform , to eliminate infrastructure management overhead and optimize costs through a pay-per-use pricing model.

The architecture is designed for high availability, security, and operational excellence, consisting of:

𝗕𝗹𝘂𝗲/𝗚𝗿𝗲𝗲𝗻 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁 𝗦𝘁𝗿𝗮𝘁𝗲𝗴𝘆
 • A Enhances availability by deploying updates to a separate (green) environment first.
 • A Enables safe testing and minimizes rollback risks and downtime.
 • A Improves reliability: Blue/Green deployments provide stable updates with built-in safety features.

𝗩𝗣𝗖 𝗘𝗻𝗱𝗽𝗼𝗶𝗻𝘁𝘀 - 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 𝗙𝗶𝗿𝘀𝘁
 • A Used Interface Endpoints for ECR and S3, ensuring that traffic stays within AWS's private network and has no exposure to the public internet.
 • A Deploying worker nodes in auto-scaling groups across private subnets.
 • A IAM role assignments to securely manage cluster access.

AWS Services and Tools Used
• Terraform:  Provision ECS Fargate tasks in private subnets
• VPC Endpoints:  (ECR & S3) Keep traffic within AWS network boundaries.
• Amazon ECR:  Docker Image Build → Scan → Push to Amazon ECR.
• AWS CloudWatch:  App Deployment to ECS Services with Health Checks + CloudWatch Logs.
• KMS:  KMS encryption for both CloudWatch logs and ECR image layers.
• AWS Code Deploy and GitHub Actions:  Blue-Green Deployments using CodeDeploy + GitHub Actions.
• AWS IAM:  IAM roles are assigned to nodes in the EKS cluster to ensure secure access control.

Best Practices for orchestrating CI/CD Workflows for AWS Fargate Using GitHub Actions
• Leveraging VPC endpoints ensures all data stays within the AWS network — no internet exposure.
• Blue-Green deployments with CodeDeploy help achieve zero-downtime deployments.
• Using KMS encryption ensures data security at rest and in transit.
• Infrastructure as Code with Terraform makes the whole process repeatable and scalable.
• CloudWatch Container Insights offers real-time monitoring for proactive issue resolution.
• CI/CD integration with GitHub Actions simplifies automation and boosts productivity.

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