DevOps – CI/CD Pipeline – 3-Tier Web Application

Project 2

Project Overview

The project implements a complete CI/CD pipeline starting from code commits in GitHub to production deployment in Kubernetes clusters. It ensures automation, reliability, and security throughout the software delivery lifecycle.

Architecture

  • GitHub – Version control and code repository.
  • Jenkins – Orchestrates builds, tests, and deployment stages.
  • Docker – Packages applications into portable containers.
  • Kubernetes – Runs and scales containerized workloads.
  • Monitoring – Logs and metrics with Prometheus & Grafana.

Pipeline Flow

  1. Developer pushes code changes to GitHub.
  2. Jenkins triggers automatically using webhooks.
  3. Build stage runs unit tests, security scans (Trivy, SonarQube).
  4. Docker image is built and pushed to DockerHub.
  5. Deployment manifests are applied to Kubernetes.
  6. Monitoring and alerting configured for proactive incident response.

Key Outcomes

  • Reduced deployment time from hours to minutes.
  • Improved release reliability with automated testing.
  • Enhanced security with container scanning and RBAC in Kubernetes.
  • High availability with auto-scaling and rolling updates.
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