Kubernetes Deployment of Java Application

Project Overview

This project demonstrates the deployment of a Java Spring Boot application on Kubernetes using Minikube running on an AWS EC2 instance.

The application is containerized using Docker and deployed to a Kubernetes cluster using Deployment and Service resources. The project also demonstrates pod scaling and service exposure through Kubernetes.

Architecture

User

↓

Kubernetes Service (NodePort)

↓

Kubernetes Deployment

↓

Spring Boot Application Pods

Technologies Used

• AWS EC2
• Amazon Linux 2023
• Docker
• Kubernetes
• Minikube
• kubectl
• Java 21
• Spring Boot
• Git
• GitHub

Project Structure

kubernetes-java-application-deployment/

├── deployment.yaml

├── service.yaml

└── README.md

Kubernetes Deployment

Deployment configuration creates multiple replicas of the Spring Boot application.

Features:

• Multiple Pod Replicas
• Self-Healing Pods
• Containerized Application Deployment
• Rolling Updates Support

Kubernetes Service

NodePort service exposes the application to external users.

Features:

• Internal Cluster Networking
• External Access Through NodePort
• Load Distribution Across Pods

Deployment Steps

Apply Deployment

kubectl apply -f deployment.yaml

Apply Service

kubectl apply -f service.yaml

Verify Pods

kubectl get pods

Verify Deployment

kubectl get deployments

Verify Service

kubectl get svc

Scaling Application

Scale deployment to 4 replicas:

kubectl scale deployment backend-deployment --replicas=4

Verify:

kubectl get pods

Project Outcome

Successfully deployed a Java Spring Boot application on Kubernetes and managed application lifecycle using Kubernetes Deployments and Services.

Learning Outcomes

• Kubernetes Cluster Setup
• Minikube Administration
• Pod Management
• Deployments
• Services
• Scaling Applications
• Container Orchestration
• AWS EC2 Administration

Author

Vignesh

AWS | DevOps | Linux | Kubernetes