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Deploying a 3 Tier Application on Kubernetes

Abhimanyu Garg

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TechManyu

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9 min read

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Sep 16, 2023

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In this deployment scenario, we aim to create a three-tier application architecture within a Kubernetes cluster. The application consists of a web tier, a Python Flask app tier, and a MySQL database tier. To facilitate this architecture, we’ll deploy NGINX as a reverse proxy for the Python Flask app to handle incoming web traffic.

The architecture includes the following components:

1. Web Tier (NGINX): NGINX will serve as a reverse proxy to direct incoming web requests to the Python Flask app. It will be deployed in its own pods for scalability.
2. Python Flask App Tier: The Python Flask app, which we previously created, will be deployed in separate pods to handle web requests and communicate with the MySQL database.
3. MySQL Database Tier: A MySQL database will be deployed to store data for the Python app. The Python app containers will communicate with this database tier.

This architecture allows for better scalability, maintainability, and separation of concerns within the Kubernetes cluster. Communication between the components is established through Kubernetes services, enabling the seamless flow of data and requests throughout the application.

We highly encourage you to check our Kubernetes Concepts series before starting with hands-on…