/corpay_interview_assignment

Primary LanguageJavaScript

Repository Overview

This repository contains the source code and IaC configurations for an example application written in Ruby on Rails (ROR). The repository is structured to facilitate CI/CD using GitHub Actions. The application is deployed to AWS ECS and relies on MySQL 8.0 RDS for its database. The CI/CD pipeline is responsible for building, testing and creating a container image, storing it in ECR, and deploying to ECS. Load balancing for the application is handled with ALB

  • Application:

    The ROR example blog application source code is located in the root directory. Ruby version: 3.2.2

  • GitHub Actions Workflow:

    The CI/CD pipeline configuration is stored in the .github/workflows directory.

  • Terraform Infrastructure: Terraform version used: v1.5.7 Infrastructure configurations for deploying the application are divided into two parts:

    1. Initial manual configurations: terraform/manual
    2. Automated configurations: terraform/auto

  • Database: MySQL v8.0 RDS

  • Monitoring ECS has enabled CloudWatch monitoring

  • Scalability The application is deployed to AWS Elastic Container Service (ECS), and load balancing is achieved using an Application Load Balancer (ALB). Application automatically scales according to the CPU/Mem consumption

  • GitHub Actions Secrets: Credentials and other sensitive information used in the GitHub Actions workflows are securely stored as secrets within GitHub.

CI/CD Workflow

CI/CD process performs the following steps:

  1. Build: The application code is built and dependencies are installed.

  2. Test: Unit tests, integration tests, or any other specified tests are executed.

  3. Docker Image Creation: A Docker container image is created, and the application code is bundled into it.

  4. Amazon ECR: The container image is pushed to Amazon Elastic Container Registry (ECR).

  5. ECS Deployment: The new container image is deployed to AWS ECS, ensuring the application is up-to-date.

CI/CD SCHEME:

Commit/PR -> Trigger build -> Build -> Test -> Deliver build to ECR -> Terraform updates ECS

Terraform Infrastructure

The Terraform configurations are divided into two parts for ease of management:

  1. Manual Part (terraform/manual): Contains configurations that require manual intervention or setup. This include VPC, RDS DB and ECS cluster.

  2. Automated Part (terraform/auto): Includes automated configurations that are used for provisioning. This include ECS, security groups, container definition and ALB.

Architecture diagram: