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Day 85: Deploying a Web App on AWS ECS with ECR

Day 85: Deploying a Web App on AWS ECS with ECR

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Arjun Menon
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3 min read

Introduction

In the world of cloud computing, deploying applications has become more efficient and scalable. Amazon Web Services (AWS) provides a range of services that enable developers to easily deploy and manage their applications. In this step-by-step guide, we'll walk through the process of deploying a Todo app on AWS ECS (Elastic Container Service) using ECR (Elastic Container Registry). This tutorial assumes you have a basic understanding of AWS services and have an AWS account.

Step 1: Set Up an EC2 Instance

  1. Launch an EC2 instance with Amazon Linux or any other suitable Amazon Machine Image (AMI).

  2. SSH into the instance.

ssh -i your-key.pem ec2-user@your-instance-ip

Step 2: Clone the Todo App Repository

Clone the Todo app repository from your version control system (e.g., GitHub).

git clone https://github.com/your-username/todo-app.git
cd todo-app

Step 3: Set Up ECR Repository

  1. Navigate to the AWS Management Console and open the Elastic Container Registry (ECR).

  2. Create a new repository named node-app.

Step 4: Install Docker and AWS CLI on EC2 Instance

Install Docker and the AWS CLI on your EC2 instance.

sudo apt update -y
sudo apt install docker.io
sudo usermod -a -G docker ubuntu
curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
unzip awscliv2.zip
sudo ./aws/install

Step 5: Authenticate Docker with ECR

Run the following command to retrieve an authentication token and authenticate your Docker client with your ECR registry.

aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws/u1o8l9k6

Step 6: Build and Push Docker Image to ECR

Build your Docker image and push it to the ECR repository.

docker build -t node-app .
docker tag node-app:latest public.ecr.aws/u1o8l9k6/node-app:latest
docker push public.ecr.aws/u1o8l9k6/node-app:latest

Step 7: Create ECS Cluster

  1. Navigate to ECS in the AWS Management Console.

  2. Create a new cluster named node-todo-cluster.

  3. Choose Fargate as the launch type.

Step 8: Create Task Definition and Deploy

  1. Create a new task definition named node-todo-app-task-definition.

  2. Select the task definition and click on "Deploy," then "Run Task."

Step 9: Check the App

  1. Once the task is running, note the public IP of your Fargate instance.

  2. Open a web browser and navigate to <public-ip>:8000 to check if the Todo app is running.

Conclusion

Congratulations! You have successfully deployed a Todo app on AWS ECS using ECR. This step-by-step guide covered setting up an EC2 instance, cloning the Todo app repository, configuring ECR, installing Docker and AWS CLI, building and pushing a Docker image, creating an ECS cluster, defining tasks, and finally deploying and checking the app. This workflow provides a scalable and efficient way to deploy containerized applications on AWS.

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