DevOps Engineer Task - Deploy echo-server to Kubernetes

Task Overview

You are required to deploy the ealen/echo-server container to a Kubernetes cluster using Helm and Terraform's Helm provider. The task involves containerizing the application with a minor modification, creating a Helm chart, deploying it using Terraform, and setting up a CI/CD pipeline for automated deployments.

This task is expected to take 60 minutes and will be conducted via screen sharing.

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Task Breakdown

1. Fork & Modify the Docker Image

• Complete the Dockerfile with a minor change:
  • Update the global.json configuration to change the port from 80 to 8080.
• Build and push the modified image to Docker Hub or GitHub Container Registry (GHCR).

2. Create a Helm Chart

• Write a Helm chart to deploy ealen/echo-server.
• Include a values.yaml file for configuration (e.g., setting environment variables, replica count, service type, etc.).
• Ensure the Helm chart is reusable and configurable.

3. Deploy Using Terraform

• Use Terraform's Helm provider to deploy the Helm chart to a Kubernetes cluster.
• Parameterize the deployment (e.g., image tag, number of replicas, namespace).
• Output the service URL after deployment.

4. Setup a Git Repository Structure

• Organize your repository with the following structure:

repo-root/
│── helm/
│   ├── Chart.yaml
│   ├── values.yaml
│   ├── templates/
│   │   ├── deployment.yaml
│   │   ├── service.yaml
│── terraform/
│   ├── main.tf
│   ├── variables.tf
│   ├── outputs.tf
│── .github/
│   ├── workflows/
│   │   ├── ci-cd.yaml
│── Dockerfile
│── README.md

5. CI/CD Pipeline with GitHub Actions

• Create a GitHub Actions pipeline (.github/workflows/ci-cd.yaml) that:
  • Builds the Docker image and pushes it to a registry when a feature branch is merged to main.
  • Deploys to staging when changes are merged into main.
  • Deploys to production when a release is published.

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Deliverables

• A GitHub repository containing:
  • Helm chart (helm/ directory)
  • Terraform files (terraform/ directory)
  • A GitHub Actions pipeline (.github/workflows/ci-cd.yaml)
  • A modified Dockerfile
  • A structured README.md

Bonus (if time permits)

• ArgoCD application manifest (argo-cd/applications/echo-server.yaml)

Evaluation Criteria

• Code quality & organization: Clean and structured repository.
• AI Usage: Usage of AI tools is allowed, and actually encouraged.
• git commit messages: Commit messages should be concise and descriptive.
• Infrastructure as Code (IaC): Proper use of Terraform & Helm.
• CI/CD implementation: A working pipeline that follows best practices.
• Completeness: Successful deployment of ealen/echo-server.