CI/CD Pipeline on AWS environment with dockerized express js/ts app and a SQS queue worker

Tools

• Docker / ExpressJs / AWS SDK for JavaScript
• AWS S3
• AWS SQS
• AWS CloudWatch Logs
• AWS CodePipeline
• AWS CodeCommit
• AWS Elastic Container Registry (ECR)
• AWS EventBridge / EventBridge Rules / EventBus
• AWS Elastic Container Service (ECS)
  • Clutser
  • Service
  • Task
  • Service Connect
  • AWS Cloud Map (or Namespaces)
• AWS Elastic Load Balancer (ELB)

Project

To deploy nodejs express application using Docker engine and multiple AWS serivices.

Files

• cloudformation/pg-database-template-06.yaml contains the cloudformation template for RDS Postgres DB that exports the credencials to SSM Parameters as well
• cloudformation/pipeline.template-02.yaml contains the cloudformation template for AWS CI/CD pipeline
• ts-express-app/server.js is the express app entry point
• Dockerfile contains all the commands to assemble an image
• buildspec.yml is collection of build commands and related settings, in YAML format, that CodeBuild uses to run a build

Workflow

• Source code is stored in Github
• When source code is updated with new push event, the pipeline is triggered. Below are the list of different stages of pipeline.
  • Build:
    • AWS uses buildspec.yml file to build the image with the Dockerfile
  • Push:
    • Docker image is pushed to ECR Registry
  • Deploy:
    • Docker image is used to run a container in the ECS Service
• Nodejs application is reachable with {LoadBalancerUrl} url that is shown in the Output tab of Cloudformation

AWS CodePipeline Stpes

Github WebHook (To trigger aws codepipeline)

ECS Tasks

Express.js App