Containerizing a Microservice E-Commerce Application with Multiple Microservices Locally

App Description

The e-commerce application is divided into four distinct services:

1. Nginx (API Gateway): This service acts as the central hub for processing incoming requests. It listens to various endpoints (“/”, “/api”, “/webapi”) and routes them accordingly.
2. Angular Client: Responsible for rendering the front end of the website or user interface, accessible through the “/” endpoint.
3. Node.js Backend (Emart API): Manages and takes charge of the business logic and interacts with a MongoDB database. Accessed through the “/api” endpoint.
4. Java Backend (Books API): Another backend service handling book-related functionalities, backed by a MySQL database. Accessed through the “/webapi” endpoint.

Archietecture Image

The Need for Containerization

Containerization provides a standardized and portable environment for applications. It encapsulates each microservice along with its dependencies, ensuring consistency across different environments. Docker, a leading containerization platform, is the tool of choice for this project.

Initial Steps

1. Clone the repository.

$ git clone https://github.com/Amit-unchartered/E-MART_App.git

2. Change directory to E-MART_App, then to vagrant

$ cd E-MART_App/vagrant

3. Do vagrant up, it contains all the commands for docker installation and its dependencies.

$ vagrant up
$ vagrant ssh

4. Switch to root user

$ sudo -i

Project Setup

1. Clone the repository inside the VM.

# git clone https://github.com/Amit-unchartered/E-MART_App.git

2. change directory into E-MART_App.

# cd E-MART_App

3. Make sure there are no other containers present, if present then to stop and remove the container

# docker compose down

4. Remove all the earlier containers and images before setting up this project.

# docker system prune -a

5. Now, we will be orchestrating with docker compose.

# docker compose up -d

6. The project is set up, if you want to access it from outside the VM, then we must know the VM's IP address

# ip addr show

Find for the class C ip address i.e 192.168.x.y, type this ip at top of your browser, it will route the request to port 80.