Jenkins Pipeline for Java based application using Maven, SonarQube, Argo CD, Helm and Kubernetes

This project demonstrates a production-style end-to-end CI/CD pipeline for a Spring Boot Java application using Jenkins for CI and ArgoCD for GitOps-based CD on a Kubernetes cluster.

Prerequisites:

Java application code hosted on a Git repository

Jenkins server

Kubernetes Cluster

Install Kubectl

Install docker

SonarQube

Argo CD

The pipeline automates:

• Build and test

• Static code analysis

• Docker image creation & push

• Kubernetes deployment via ArgoCD

Architecture Overview

Flow:

Tech Stack

• Language: Java (Spring Boot)

• CI Tool: Jenkins

• Code Quality: SonarQube

• Containerization: Docker

• Container Registry: Docker Hub

• CD Tool: ArgoCD (GitOps)

• Orchestration: Kubernetes (Minikube / EKS)

• Cloud: AWS EC2

Problem Statement

Manual deployments are slow, error-prone, and difficult to scale. This project automates the entire software delivery lifecycle using DevOps best practices and GitOps, ensuring:

• Faster deployments

• Consistent environments

• Automated quality checks

• Zero manual kubectl apply

Project Workflow

Step 1: Run Application Manually

The Spring Boot application is built using Maven.

mvn clean package
java -jar target/Spring-boot-web.jar

Docker build and run:

docker build . -t ultimate-cicd:v1
docker run -d -p 8010:8080 ultimate-cicd:v1

Step 2: Continuous Integration with Jenkins

Jenkins pipeline performs:

• Pull code from GitHub

• Build with Maven

• Run SonarQube analysis

• Build Docker image

• Push image to Docker Hub

• Update Kubernetes deployment YAML with new image tag

Jenkins uses:

• GitHub credentials

• SonarQube token

• Docker Hub credentials

• Image tag is dynamically updated using Jenkins BUILD_NUMBER.

Step 3: Continuous Delivery with ArgoCD (GitOps)

ArgoCD continuously monitors the Git repository for Kubernetes YAML changes.

When Jenkins updates the deployment file:

• ArgoCD detects the change

• Automatically syncs to Kubernetes

• Deploys the new version

No manual deployment required.

Screenshots

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