Infrastructure Setup Project

Project Overview

Purpose

1. Build HealthCheck and CRUD API server in Kubernetes(minikube) environment
2. Deploy and integrate Database
3. Automate infrastructure using Terraform
4. Deploy applications using Helm Chart configuration

Tech Stacks

• Terraform v1.5.7
• Docker v24.0.6
• Minikube v1.31.0
• Helm v3.16.3
• PostgreSQL (Bitnami Helm Chart)

For the technology stack and selection rationale used in API server implementation, please refer to the API Server Repository link.

API Server Repository

Architecture Design and Directory Structure

Overall Architecture

Directory Structure

INFRA/
├── helm/
│   ├── api-server/
│   │   ├── templates/
│   │   │   ├── deployment.yaml
│   │   │   └── service.yaml
│   │   ├── Chart.yaml
│   │   └── values.yaml
├── images/
│   └── ...
├── manual_test/
│   ├── test-api.yml
│   └── test-db.yml
└── terraform/
   ├── .terraform/
   ├── main.tf
   ├── providers.tf
   ├── variables.tf
   ├── terraform.tfvars
   ├── terraform.tfstate
   ├── terraform.tfstate.backup
   └── .gitignore

Directory Structure Rationale (Terraform Standard Directory Structure)[https://developer.hashicorp.com/terraform/language/modules/develop/structure]

(Helm Chart Writing Guide)[https://helm.sh/docs/topics/charts/]

Implementation Report

Implementation Sequence

1. Minikube Configuration

• Kubernetes cluster verification in local development environment
• Cost-efficient testing environment

2. Manual Testing before Helm and Terraform Configuration

• Gathering baseline data for Helm Chart creation
• Independent verification of each component
• Quick debugging when issues arise

3. Terraform Configuration

4. Helm Chart Configuration

Essential Implementation Items

✅ Minikube Cluster Setup

• Stable local Kubernetes environment setup ✅ PostgreSQL StatefulSet Deployment
• Persistent storage configuration
• Data consistency assurance
• Streaming Replication setup ✅ CRUD API Server Deployment
• Health Check endpoint implementation
• CRUD API implementation
• Documentation through Swagger ✅ Infrastructure as Code
• Terraform-based infrastructure management
• Application deployment automation through Helm Chart

Deployment Results

Cluster Status

kubectl get all -n my-app

API Test Result

1. Health Check Endpoint

2. Swagger API Test

   • TODO Create

   

   • TODO Read(list)

   

   • TODO Update

   

   • TODO Delete

   

Additional Implementations

Completed Improvements

1. Enhanced Health Check System

• Kubernetes environment information provision
• DB connection status monitoring
• Detailed latency measurement
• Comprehensive system status logging

2. Github Action CI Implementation

• Automated Code convention checks
• Automated container build and upload

3. Database High Availability

• Streaming Replication configuration

Future Implementation Plans

1. Enhanced API Server

• Improved exception handling system
• Strengthened logging system

2. Monitoring System Implementation

• Prometheus metrics collection
• Grafana dashboard configuration

3. CD Pipeline Implementation

• Zero-downtime deployment based on ArgoCD
• Automated test integration