Hands-On Lab: Deploying a Docker Container on AWS

Are you ready to take your cloud deployment skills to the next level? Do you want to learn how to deploy a Docker container on AWS? If so, you've come to the right place! In this hands-on lab, we'll walk you through the process of deploying a Docker container on AWS step by step.

Prerequisites

Before we get started, there are a few things you'll need to have in place:

• An AWS account
• Basic knowledge of Docker
• Basic knowledge of AWS services such as EC2, VPC, and Security Groups

If you're new to AWS, don't worry! We'll provide you with all the information you need to get started.

Setting Up Your Environment

The first step in deploying a Docker container on AWS is to set up your environment. This involves creating an EC2 instance, configuring security groups, and installing Docker.

Creating an EC2 Instance

To create an EC2 instance, log in to your AWS account and navigate to the EC2 dashboard. From there, click on the "Launch Instance" button and follow the prompts to create a new instance.

When creating your instance, be sure to select an appropriate instance type and configure your storage options. You'll also need to select a security group that allows inbound traffic on port 80 (HTTP) and port 22 (SSH).

Configuring Security Groups

Once you've created your EC2 instance, you'll need to configure your security groups to allow inbound traffic on port 80 and port 22. To do this, navigate to the "Security Groups" section of the EC2 dashboard and create a new security group.

When creating your security group, be sure to add inbound rules for port 80 and port 22. You can do this by selecting "HTTP" and "SSH" from the "Type" dropdown menu and specifying the appropriate port numbers.

Installing Docker

With your EC2 instance and security groups configured, the next step is to install Docker. To do this, SSH into your EC2 instance and run the following commands:

sudo yum update -y
sudo amazon-linux-extras install docker
sudo service docker start
sudo usermod -a -G docker ec2-user

These commands will update your instance, install Docker, start the Docker service, and add your user to the Docker group.

Deploying Your Docker Container

With your environment set up, it's time to deploy your Docker container. In this lab, we'll be deploying a simple "Hello, World!" application using a Docker container.

Creating Your Docker Image

The first step in deploying your Docker container is to create your Docker image. To do this, create a new directory on your local machine and create a new file called "Dockerfile" in that directory.

In your Dockerfile, add the following code:

FROM alpine:latest
CMD echo "Hello, World!"

This code specifies that we'll be using the latest version of the Alpine Linux distribution as our base image and that our container should simply print "Hello, World!" when it starts up.

With your Dockerfile created, navigate to the directory containing your Dockerfile and run the following command to build your Docker image:

docker build -t hello-world .

This command will build your Docker image and tag it with the name "hello-world".

Pushing Your Docker Image to AWS ECR

With your Docker image built, the next step is to push it to AWS ECR (Elastic Container Registry). To do this, you'll need to create a new repository in ECR and configure your Docker CLI to authenticate with your AWS account.

To create a new repository in ECR, navigate to the ECR dashboard and click on the "Create repository" button. Follow the prompts to create a new repository with the name "hello-world".

Once you've created your repository, you'll need to configure your Docker CLI to authenticate with your AWS account. To do this, run the following command:

aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin <your-account-id>.dkr.ecr.us-east-1.amazonaws.com

This command will retrieve an authentication token from AWS ECR and use it to authenticate your Docker CLI with your AWS account.

With your Docker CLI authenticated, you can now push your Docker image to ECR. To do this, run the following command:

docker tag hello-world:latest <your-account-id>.dkr.ecr.us-east-1.amazonaws.com/hello-world:latest
docker push <your-account-id>.dkr.ecr.us-east-1.amazonaws.com/hello-world:latest

These commands will tag your Docker image with the appropriate ECR repository URL and push it to ECR.

Deploying Your Docker Container to AWS ECS

With your Docker image pushed to ECR, the final step is to deploy your Docker container to AWS ECS (Elastic Container Service). To do this, you'll need to create a new ECS task definition and service.

To create a new task definition, navigate to the ECS dashboard and click on the "Task Definitions" tab. From there, click on the "Create new Task Definition" button and follow the prompts to create a new task definition.

When creating your task definition, be sure to specify the appropriate container image URL (the URL of your ECR repository) and configure your container to listen on port 80.

Once you've created your task definition, you can create a new ECS service to deploy your container. To do this, navigate to the "Services" tab of the ECS dashboard and click on the "Create" button. Follow the prompts to create a new service and specify the appropriate task definition.

With your service created, your Docker container should now be up and running on AWS ECS! To test it out, navigate to the public IP address of your EC2 instance in your web browser. You should see the message "Hello, World!" displayed on the page.

Conclusion

Congratulations! You've successfully deployed a Docker container on AWS using ECS. By following this hands-on lab, you've gained valuable experience in setting up an EC2 instance, configuring security groups, installing Docker, creating a Docker image, pushing your image to ECR, and deploying your container to ECS.

We hope you found this lab informative and enjoyable. If you have any questions or feedback, please don't hesitate to reach out to us. Happy learning!

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