2 node cluster - app deployment

Example app: Front-end: A React application providing the user interface. Back-end: A Node.js application handling business logic and API requests. Database: A MongoDB database storing application data.

Define the Kubernetes Cluster

1. Install Minikube(https://minikube.sigs.k8s.io/docs/start/) and kubectl (https://kubernetes.io/docs/tasks/tools/)

2. Start Minikube with Two Nodes

   minikube start --nodes=2

Build and Push Docker Images

Navigate to the directories containing the Dockerfiles and run the following commands:

# For the React front-end
# (cd frontend)
docker build -t my-docker-repo/react-frontend:latest .
# For the Node.js back-end
# (cd backend)
docker build -t my-docker-repo/node-backend:latest .

Push the Docker Images to Docker Hub: Make sure you are logged in to Docker Hub using docker login.

# For the React front-end
docker push my-docker-repo/react-frontend:latest
# For the Node.js back-end
docker push my-docker-repo/node-backend:latest

Deploy to Kubernetes

# (from project root)
kubectl apply -f k8s/react-deployment.yaml
kubectl apply -f k8s/react-service.yaml
kubectl apply -f k8s/node-backend-deployment.yaml
kubectl apply -f k8s/node-backend-service.yaml
kubectl apply -f k8s/mongo-deployment.yaml
kubectl apply -f k8s/mongo-service.yaml

Verify distribution across nodes

kubectl get pods -o wide