load-balancer-nginx-docker-v1

Dockerized Node.js Project with Nginx Load Balancing

This project demonstrates how to Dockerize a Node.js application and set up Nginx as a load balancer to distribute traffic among multiple Node.js containers.

Prerequisites

Make sure you have Docker installed on your machine. You can download and install Docker from Docker's official website.

Project Structure

• app.js: Node.js application file.
• Dockerfile: Dockerfile for building the Node.js application image.
• nginx.conf: Custom Nginx configuration file for load balancing.

Setup Instructions

Step 1: Create Docker Network

Create a Docker network named internal to allow communication between containers:

docker network create internal
docker build -t my-node-app .

docker run -d --name node-app --network internal -p 4000:4000 my-node-app
docker run -d --name node-app2 --network internal -p 4001:4000 my-node-app
# Add more instances as needed, adjusting ports accordingly
docker run -d --name nginx --network internal -p 80:80 nginx:latest

docker cp ./nginx.conf nginx:/etc/nginx/conf.d/default.conf

docker restart nginx