This repo can be used an example how you handle infrastructure day-to-day.

This is a coding exercise for someone who works as an Infrastructure Engineering This whole work can be completed in around 1-2 hours.

Things that you'll learn by this repo -

An ability to handle code like a software engineer Maintainability of solutions Containers Infrastructure as Code Monitoring Consideration of CI/CD Resilience Ability to develop applications locally in a consistent environment Concise documentation (please include a README) As you must only be interested in the code, I didn't let this project running and in order not to incur any aws costs.

Okay, let's begin -

We are going to create a simple 'Hello World' web application (for example, node.js) and deploy it to a Cloud Infrastructure, such as an AWS account, using appropriate tools and best practices. When deployed, the root url should display 'Hello World'.

PS - Changed output to "Hello" :)

Click here - http://test-lb-tf-1964796265.us-east-2.elb.amazonaws.com

Prerequisites

• AWS account - used free tier account
• Node - v14.6.0
• Docker
• Terraform - v0.12.29

Overview of the Solution

• Created a simple Node app
• Dockerize the Node app.
• Push the image to AWS ECR

Used Terraform to -

• provision network resources
• provision an AWS ECS cluster
• Create an AWS ECS task
• Create an AWS ECS service
• Create a load balancer

Step 1 - Created the Node App

create and navigate to application’s directory:

$ mkdir nodeapp-on-aws-CondeNast

$ cd nodeapp-on-aws-CondeNast

created an npm project: $ npm init --y

Install Express: $ npm install express

Created node.js file :

'use strict';
const express = require('express');
// Constants
const PORT = 3000;
const HOST = '0.0.0.0';
// App
const app = express();
app.get('/', (req, res) => {
  res.send('Hello Condé Nast');
});
app.listen(PORT, HOST);
console.log(`Running on http://${HOST}:${PORT}`);

$ node node.js app should be running at - http://localhost:3000/

Step 2 - Dockerize the Node App

created a Dockerfile

FROM node:14-slim
WORKDIR /app
COPY package.json .
RUN yarn
COPY . .
EXPOSE 3000
CMD [ "node", "node.js" ]

Step 3 - Pushed the Node App image to AWS ECR

Step 4 Run terraform to provision network and infrastructure components

Apply complete! Resources: 15 added, 0 changed, 0 destroyed.

Outputs:

App_URL = test-lb-tf-1964796265.us-east-2.elb.amazonaws.com  

ramaurya@ramaurya-mac nodeapp-on-aws (master)*$ curl http://test-lb-tf-1964796265.us-east-2.elb.amazonaws.com
Hello World

Directory structure

ramaurya@ramaurya-mac nodeapp-on-aws (master) $ tree
.
├── Dockerfile
├── main.tf
├── node.js
├── package.json
├── providers.tf
└── README.md
└── variables.tf