Devops-Intern.md

The Challenge

Write a FastAPI server to create a highly available K3s cluster on Azure Virtual Machine using just simple API endpoints. Deploy CloudNativePG in the K3s cluster using Helm charts.

Your task is to:

• Create a K3s cluster with High Availability using Embedded etcd for fault tolerance.
• Deploy the CloudNativePG to the K3s cluster using Helm charts. The PostgreSQL database should have an HTTP endpoint to connect.
• Configure DNS to point a custom domain name to the K3s cluster's load balancer IP.

Automate the entire setup process by writing a script that:

• Creates the Azure nodes and K3s cluster.
• Deploys the PostgreSQL (CloudNativePG) database.
• Configures DNS.
• Document the architecture and steps in a README file.

Options for Implementation

• Use Azure SDK directly or Pulumi for provisioning Azure resources.
  • For more information on using the Azure SDK for Python, refer to Azure SDK for Python.
  • For Pulumi, check out Pulumi Azure Documentation.
• Implement Ingress Nginx Controller as a reverse proxy to handle incoming requests and provide SSL termination.
• Implement Cert Manager to manage SSL certificates.

Bonus points for:

• Setting up monitoring and logging for the cluster.

Please provide the automation script, Helm charts, and documentation in a GitHub repository. Be prepared to walk through your solution and discuss the architecture and technologies used.