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.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Database
+*.db
+*.sqlite
+
+# Docker
+.dockerignore
+
+#Kiro
+.kiro
+hiring-challenge-devops-python.*

API.md

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+# Server Inventory Management API
+
+## Overview
+
+REST API for managing server inventory with CRUD operations. Built with FastAPI and PostgreSQL.
+
+**Base URL**: `http://localhost:8000`
+
+## Quick Start
+
+```bash
+# Start with Docker
+docker compose up -d
+
+# Check health
+curl http://localhost:8000/health
+```
+
+## Endpoints
+
+### Health Check
+```bash
+GET /health
+# Response: {"status": "healthy", "database": "connected", "server_count": 5}
+```
+
+### Server Operations
+
+| Method | Endpoint | Description |
+|--------|----------|-------------|
+| `POST` | `/servers` | Create server |
+| `GET` | `/servers` | List all servers |
+| `GET` | `/servers/{id}` | Get server by ID |
+| `PUT` | `/servers/{id}` | Update server |
+| `DELETE` | `/servers/{id}` | Delete server |
+
+## Examples
+
+### Create Server
+```bash
+curl -X POST http://localhost:8000/servers \
+  -H "Content-Type: application/json" \
+  -d '{
+    "hostname": "web-server-01",
+    "ip_address": "192.168.1.100",
+    "state": "active"
+  }'
+```
+
+**Response (201)**:
+```json
+{
+  "id": 1,
+  "hostname": "web-server-01",
+  "ip_address": "192.168.1.100",
+  "state": "active",
+  "created_at": "2023-12-01T10:00:00Z",
+  "updated_at": "2023-12-01T10:00:00Z"
+}
+```
+
+### List Servers
+```bash
+curl http://localhost:8000/servers
+```
+
+### Get Server
+```bash
+curl http://localhost:8000/servers/1
+```
+
+### Update Server
+```bash
+curl -X PUT http://localhost:8000/servers/1 \
+  -H "Content-Type: application/json" \
+  -d '{"state": "offline"}'
+```
+
+### Delete Server
+```bash
+curl -X DELETE http://localhost:8000/servers/1
+```
+
+## Data Model
+
+```json
+{
+  "id": 1,
+  "hostname": "web-server-01",
+  "ip_address": "192.168.1.100",
+  "state": "active",
+  "created_at": "2023-12-01T10:00:00Z",
+  "updated_at": "2023-12-01T10:00:00Z"
+}
+```
+
+**Fields**:
+- `hostname`: Unique server name (1-255 chars)
+- `ip_address`: Valid IPv4/IPv6 address
+- `state`: `active`, `offline`, or `retired`
+
+## Error Responses
+
+| Code | Description | Example |
+|------|-------------|---------|
+| `409` | Conflict (duplicate hostname/IP) | `{"detail": "Server with hostname 'web-01' already exists"}` |
+| `404` | Server not found | `{"detail": "Server not found"}` |
+| `422` | Validation error | `{"detail": "Invalid IP address format"}` |
+
+## Validation Rules
+
+- **Hostname**: Must be unique, 1-255 characters
+- **IP Address**: Must be valid IPv4 or IPv6
+- **State**: Must be `active`, `offline`, or `retired` (case-sensitive)
+
+## Interactive Documentation
+
+- **Swagger UI**: http://localhost:8000/docs
+- **ReDoc**: http://localhost:8000/redoc
+
+## Configuration
+
+Set via environment variables:
+
+```bash
+export DATABASE_HOST=localhost
+export DATABASE_PORT=5432
+export DATABASE_NAME=server_inventory
+export DATABASE_USER=inventory_user
+export DATABASE_PASSWORD=inventory_password
+export API_HOST=0.0.0.0
+export API_PORT=8000
+```
+
+For complete examples and deployment details see `COMMAND_REFERENCE.md`