README for DevOps Python Platform

Overview

This project is a Python API that reads and writes to a database, fully automated on a Linux server, using Bash scripts for operations tasks and CI/CD for deployment.

Tech Stack

• Linux (Ubuntu Server)
• Bash (automation & deployment)
• Python (Flask or FastAPI)
• PostgreSQL (or MySQL)
• Docker
• GitHub Actions
• Nginx
• Systemd
• AWS EC2 (or any VPS)

Architecture

User
 ↓
Nginx (Linux)
 ↓
Python API (Docker)
 ↓
PostgreSQL

Core Features

• REST API (CRUD)
• /health endpoint
• Reads & writes to DB
• Uses env vars (12-factor style)

Scripts

• deploy.sh – pull image & restart service
• backup_db.sh – scheduled DB backups
• health_check.sh – service monitoring
• log_rotate.sh – clean old logs
• setup_server.sh – one-command server bootstrap

CI/CD Pipeline

• Run Python tests
• Lint code
• Build Docker image
• Push image to registry
• SSH into Linux server
• Run Bash deploy script

Linux System Design

• systemd service for API
• Nginx as reverse proxy
• UFW firewall
• Non-root user
• SSH key auth only