Todo App Kubernetes Deployment

This repository contains the Kubernetes configuration files to deploy my Todo App.

Description

The Todo App is a web application for creating, reading, updating, and deleting the task to do. It is built using Node.js and is containerized using Docker.

Containers Used

• elineen/todo-app:latest: The main application container that runs the Todo App.

Kubernetes Objects

• Namespace: namespace.yaml - The namespace in which all other objects are created.
• Deployment: deployment.yaml - Defines the deployment configuration for the Todo App.
• StatefulSet: statefulset.yaml - Defines the stateful set configuration for the Todo App, including PersistentVolume and PersistentVolumeClaim objects.
• Service: service.yaml - Exposes the Todo App to the network.

Virtual Networks and Named Volumes

• PersistentVolume: Defines a persistent volume for storing application data.
• PersistentVolumeClaim: Claims the persistent volume for use by the StatefulSet.

Container Configuration

The container configuration includes the following:

• Image: elineen/todo-app:latest
• Ports: The application listens on port 8080.
• Volume Mounts: The container mounts the persistent volume at /data.

Instructions

Prerequisites

• Kubernetes cluster (e.g., Minikube, Docker Desktop, or a cloud provider like GKE, EKS, AKS)
• kubectl command-line tool installed and configured to interact with your Kubernetes cluster
• Docker installed and configured to pull images from Docker Hub

Prepare the Application

Run the following script to prepare the application, build the Docker image, and create the persistent volumes:

./prepare-app.sh

Start the Application

Run the following script to create all Kubernetes objects and start the application:

./start-app.sh

Stop the Application

Run the following script to delete all created Kubernetes objects and stop the application:

./stop-app.sh

View the Application

If you are using a LoadBalancer service, you can access the application using the external IP address provided by the service. Run the following command to get the service details:

kubectl get services -n my-namespace

Open a web browser, enter this sentence and replace with the external IP address obtained from the previous step.

http://<external-ip>

This is it, your Todo-List is working, enjoy!