Python Web Application with Kubernetes Deployment

📘 Project Description

A simple Python web application with login functionality, containerized and deployed on Kubernetes. The application serves a login page and handles authentication with hardcoded credentials for demonstration purposes.

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📁 Project Structure

├── server.py          # Python HTTP server implementation
├── index.html         # Login page HTML file
├── deployment.yaml    # Kubernetes deployment configuration
├── service.yaml       # Kubernetes service configuration
└── README.md          # Project documentation

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⚙️ Application Components

Backend (server.py)

• Built with Python’s http.server module

• Handles GET requests for serving the login page

• Processes POST requests for login authentication

• Hardcoded credentials:

  • Username: admin
  • Password: 1234

• Server runs on port 8001

Frontend (index.html)

• Clean, responsive login form
• CSS styling for modern appearance
• Form submission to /login endpoint

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☸️ Kubernetes Configuration

Deployment (deployment.yaml)

• Deployment name: pythonapp-deployment
• Replicas: 2 (for high availability)
• Container image: ima110/pythonapp:latest
• Container port: 8001

Service (service.yaml)

• Service name: python-app-service
• Type: LoadBalancer
• External port: 80
• Target port: 8001
• Selector: app: pythonapp

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🧩 Prerequisites

• A running Kubernetes cluster
• kubectl configured
• Docker image available at ima110/pythonapp:latest

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🚀 Quick Start

Deploy to Kubernetes

# Apply the deployment
kubectl apply -f deployment.yaml

# Apply the service
kubectl apply -f service.yaml

Verify Deployment

# Check deployment status
kubectl get deployments

# Check service and get external IP
kubectl get services

# Monitor pods
kubectl get pods -l app=pythonapp

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🌐 Access the Application

Once deployed, access the app using the external IP from the LoadBalancer service:

http://<EXTERNAL-IP>/

Default Login Credentials

Username: admin
Password: 1234

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📊 Monitoring and Logs

# View application logs
kubectl logs -l app=pythonapp

# Check pod status
kubectl get pods -l app=pythonapp

# View detailed pod information
kubectl describe pod -l app=pythonapp

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🔒 Security Note

This application uses hardcoded credentials for demonstration only. For production environments:

• Implement secure credential storage
• Use environment variables
• Enforce HTTPS and encryption

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🔁 CI/CD Integration

The deployment is compatible with Jenkins CI/CD pipelines. Jenkins dynamically updates the deployment by replacing the latest image tag with the appropriate build tag during automated deployment.