Vagrant web load balancer demo

This project is a simple example of how to build a NodeJS web app and run a HAProxy Load Balancer in front of the web app, using docker containers. This is managed by a multi-machine Vagrantfile that uses the Vagrant docker provider for setting up the containers.

Installation

• Install vagrant: http://vagrantup.com/downloads.html
• Install docker: https://docs.docker.com/install

Quick Start

Clone this repo: git clone https://github.com/dglynn/demo-lb-web.git

vagrant up --no-parallel

The need to use the --no-parallel flag is because the lb container is linked to the web container: https://www.vagrantup.com/docs/docker/configuration.html#link

How it Works

Once the installation finishes, you can browse to localhost from your web browser. The HAProxy is listening on port 80 and it will forward your request to the web app running on port 8080 on localhost.

The web app is using NodeJS, ExpressJS and EJS for templating the NodeJS app.

PR's and issues welcome.