🚀 Enterprise DevOps 3-Tier Web Application Roadmap

A production-grade 3-Tier architecture web application (React, Node.js, MySQL) designed to demonstrate a complete end-to-end DevOps lifecycle—ranging from local containerization to high-availability cloud orchestration and enterprise monitoring.

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🏗️ Architecture Breakdown

This application follows a strict 3-tier decoupling architecture strategy:

• Presentation Tier (Frontend): A responsive, stateful dashboard built with React.js to manage milestones dynamically.
• Logic Tier (Backend): A robust RESTful API built with Node.js & Express handling core CRUD operations, interacting with the database layer, and exposing dedicated health-check endpoints (/health).
• Data Tier (Database): A relational storage sub-system powered by a MySQL 8.0 container instance.

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🗺️ Implementation & Deployment Roadmap

The project is structured to progress through four distinct deployment phases mimicking real-world production environments:

📍 Phase 1: Local Multi-Container Orchestration (Current State)

• Objective: Containerize all tiers and enable localized, single-command bootstrapping.
• Tech Stack: Docker, Dockerfile, Docker Compose.
• Tasks:
  • Write isolated, optimized Multi-stage Dockerfiles for both Frontend and Backend layers.
  • Construct a docker-compose.yml file to handle networking, persistent storage (named volumes), environment variables, and initialization order (depends_on).

📍 Phase 2: Cloud Staging Environment (AWS EC2 & Docker Hub)

• Objective: Establish a remote Developer/Staging environment on the cloud utilizing automated container registries.
• Tech Stack: AWS EC2 (Ubuntu AMI), Git, Docker Hub, Security Groups.
• Tasks:
  • Tag, build, and publish production-ready application images to Docker Hub.
  • Provision an AWS EC2 Instance, configure networking/firewalls (Security Groups), and install Docker runtimes.
  • Pull and deploy the architecture seamlessly on the cloud instance.

📍 Phase 3: Production Grade Orchestration (AWS EKS)

• Objective: Transition from a single-instance environment to a highly available, fault-tolerant, auto-scaling distributed system.
• Tech Stack: AWS EKS (Elastic Kubernetes Service), eksctl, kubectl, Kubernetes Manifests (YAML).
• Tasks:
  • Design declarative K8s manifests: Deployments (for stateless app tiers), StatefulSets/PV/PVC (for persistent MySQL state), and Services (ClusterIP & LoadBalancer).
  • Secure confidential credentials (DB passwords) using Kubernetes Secrets and config management via ConfigMaps.
  • Provision and deploy into a managed AWS EKS Cluster.

📍 Phase 4: Observability & Enterprise Monitoring

• Objective: Set up robust logging and metric-collection systems to monitor cluster health, node performance, application uptime, and database error rates.
• Tech Stack: Prometheus, Grafana, Helm Core.
• Tasks:
  • Install and configure Prometheus inside the cluster to scrape telemetry and node metrics.
  • Connect Grafana to visualize the time-series data using dynamic dashboards.
  • Setup alert configurations for critical failures or high resource thresholds.

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🚀 How to Run Locally (Traditional Node Bootstrapping)

Prerequisites

• Node.js (v18+)
• Docker Desktop (Running)

1. Database Tier Setup

Run the localized MySQL container instance and initialize the schema:

# Start MySQL Container
docker run -d --name my-mysql-db -p 3306:3306 -e MYSQL_ROOT_PASSWORD=password -e MYSQL_DATABASE=devops_db mysql:8.0

# Initialize Database Schema
docker exec -it my-mysql-db mysql -uroot -ppassword -e "USE devops_db; CREATE TABLE IF NOT EXISTS tasks (id INT AUTO_INCREMENT PRIMARY KEY, title VARCHAR(255) NOT NULL, status VARCHAR(50) NOT NULL);"