JenkinsLab – CI/CD Pipeline on Kubernetes

🎯 Purpose

Demonstrates containerized CI/CD pipeline deployment using Kubernetes, showcasing automated build and deployment workflows for cloud-native applications.

🏗️ Architecture

• Kubernetes Cluster (Rancher Desktop with K3s)
• Jenkins Controller (Deployed via Helm)
• Jenkins Agents (Kubernetes pods)
• Multi-stage Pipeline (Build, Test, Deploy)

⚙️ Technical Implementation

Deployment Steps

# Install Jenkins via Helm
helm repo add jenkins https://charts.jenkins.io
helm install jenkins jenkins/jenkins --namespace jenkins

# Access Jenkins UI
kubectl --namespace jenkins port-forward svc/jenkins 8080:8080

# Get admin credentials
kubectl exec --namespace jenkins -it svc/jenkins -c jenkins -- \
  /bin/cat /run/secrets/additional/chart-admin-password

Pipeline Configuration

pipeline {
    agent any
    stages {
        stage('Build') {
            steps {
                echo 'Building the application...'
            }
        }
        stage('Test') {
            steps {
                echo 'Running tests...'
            }
        }
        stage('Deploy') {
            steps {
                echo 'Deploying to production...'
            }
        }
    }
}

🎯 Key Features

• ✅ Containerized Jenkins deployment on Kubernetes
• ✅ Automated CI/CD pipeline execution
• ✅ GitHub webhook integration
• ✅ Multi-stage pipeline validation
• ✅ Dashboard and CLI monitoring

📊 Results

• Deployment Time: < 5 minutes via Helm
• Build Time: ~2-3 minutes per pipeline
• Agent Scaling: Dynamic pod creation
• Platform: Cross-platform (Windows/Linux via WSL2)

🔧 Technical Highlights

• Kubernetes-native CI/CD orchestration
• Helm chart management for consistent deployments
• Jenkins distributed builds across multiple agents
• Container networking and troubleshooting
• WSL2 runtime issue resolution

📈 Future Enhancements

• GitOps integration with automated GitHub triggers
• Advanced pipeline features (parallel stages, approval gates)
• RBAC and secrets management implementation
• Multi-environment deployment workflows
• Prometheus and Grafana monitoring stack

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Built with: Kubernetes | Jenkins | Helm | Docker | GitHub Actions

Tags: kubernetes jenkins cicd helm automation devops containerization