Kubernetes DevOps Project with Jenkins, Docker, Helm, and Monitoring

This project demonstrates an end-to-end CI/CD pipeline deploying a microservices-based application on AWS EKS using Jenkins, Docker, Helm, Prometheus, and Grafana with Dev, Stage, and Prod environments.

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🚀 Manual Setup Instructions

1. Prerequisites

Install the following tools on your local or cloud VM:

• AWS CLI
• kubectl
• Docker
• Helm
• Jenkins
• Git

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2. Setup AWS and EKS Cluster

aws configure
eksctl create cluster --name devops-cluster --region us-east-1 --nodes 2
aws eks update-kubeconfig --name devops-cluster --region us-east-1

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3. Create Kubernetes Namespaces

kubectl create ns dev
kubectl create ns stage
kubectl create ns prod
kubectl create ns monitoring

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4. Build and Push Docker Images

cd services/product-service
docker build -t product-service .

# Push to ECR
aws ecr create-repository --repository-name product-service
aws ecr get-login-password | docker login --username AWS --password-stdin <your-ecr-url>
docker tag product-service:latest <your-ecr-url>:latest
docker push <your-ecr-url>:latest

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5. Deploy Using Helm

# Dev
helm upgrade --install product-service ./helm-charts/product-service -f ./helm-charts/product-service/values-dev.yaml -n dev

# Stage
helm upgrade --install product-service ./helm-charts/product-service -f ./helm-charts/product-service/values-stage.yaml -n stage

# Prod
helm upgrade --install product-service ./helm-charts/product-service -f ./helm-charts/product-service/values-prod.yaml -n prod

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6. Setup Jenkins on EC2 (Optional)

sudo apt update
sudo apt install openjdk-11-jdk -y
wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -
sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'
sudo apt update && sudo apt install jenkins -y

Then open Jenkins UI and set up the pipeline using the Jenkinsfile.

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7. Monitoring Setup

# Prometheus & Grafana
helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo add grafana https://grafana.github.io/helm-charts
helm repo update

helm install prometheus prometheus-community/kube-prometheus-stack -n monitoring -f monitoring/prometheus-values.yaml
helm install grafana grafana/grafana -n monitoring -f monitoring/grafana-values.yaml

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8. Access Grafana Dashboard

kubectl port-forward svc/grafana 3000:80 -n monitoring

Login: admin / prom-operator

Import the dashboards from monitoring/dashboards/.

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9. Manage Secrets & Configs

kubectl create secret generic db-secret --from-literal=DB_PASSWORD=admin123 -n dev
kubectl create configmap app-config --from-literal=ENV=dev -n dev

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✅ Summary

This project covers:

• CI/CD with Jenkins
• Containerization with Docker
• Multi-environment deployment with Helm
• Monitoring with Prometheus and Grafana
• Secrets and config management