Arvan Interview Challenge

This repository presents a comprehensive and professional solution for the Arvan interview challenge. The project demonstrates a modern Infrastructure as Code (IaC), configuration management, and GitOps approach to application deployment, ensuring a reliable, automated, and reproducible CI/CD pipeline.

🚀 Key Features

• IaC: Provision cloud resources on Arvan Cloud using Terraform.
• Configuration Management: Automate server setup and application deployment with Ansible.
• GitOps: Utilize a Git-driven continuous deployment pipeline to automate the deployment process.
• Containerization: Leverage Docker and Kubernetes for application containerization and orchestration.
• Technology Stack: The application is built with Go (Golang).

📁 Repository Structure

The project is logically divided into the following components:

• app: Contains the source code for the Go-based application.
• terraform: Includes Terraform configurations for provisioning the required infrastructure on Arvan Cloud.
• ansible: Holds Ansible playbooks for server configuration and Kubernetes cluster setup.
• gitops: Manages the continuous deployment pipeline using ArgoCD and GitHub Actions as the single source of truth.

For a detailed breakdown of each component, please refer to their respective README files:

• Application README
• Terraform README
• Ansible README
• GitOps README

⚙️ Getting Started

To deploy this project, follow the sequential steps outlined below. Each step has detailed instructions within its respective directory's README file.

Step 1: Provision Infrastructure with Terraform

Start by provisioning the foundational cloud infrastructure. Navigate to the terraform/arvan-provision directory and apply the Terraform configuration. This will provision three virtual machines within a private network on Arvan Cloud.

cd terraform/arvan-provision
terraform apply

Step 2: Install Kubernetes Cluster with Ansible

Next, configure the provisioned virtual machines and set up the Kubernetes cluster using Ansible. This process leverages the Kubespray project for a robust and standardized cluster installation.

cd ansible
./kubespray.sh

Step 3: Implement Storage Provider with Terraform

Once the cluster is up, install a persistent storage solution. Apply the Terraform configuration in the terraform/storage-provider directory to deploy Longhorn as the storage provider and create the necessary storage classes.

cd terraform/storage-provider
terraform apply

Step 4: Deploy the Application with GitOps

Finally, deploy the application layer using ArgoCD and a GitOps approach. Apply the Terraform configuration in the terraform/argocd directory to install the ArgoCD Helm chart. This setup utilizes an App-of-Apps pattern for managing and deploying the application layer automatically.

cd terraform/argocd
terraform apply