Book Image

Docker on Amazon Web Services

By : Justin Menga
Book Image

Docker on Amazon Web Services

By: Justin Menga

Overview of this book

Over the last few years, Docker has been the gold standard for building and distributing container applications. Amazon Web Services (AWS) is a leader in public cloud computing, and was the first to offer a managed container platform in the form of the Elastic Container Service (ECS). Docker on Amazon Web Services starts with the basics of containers, Docker, and AWS, before teaching you how to install Docker on your local machine and establish access to your AWS account. You'll then dig deeper into the ECS, a native container management platform provided by AWS that simplifies management and operation of your Docker clusters and applications for no additional cost. Once you have got to grips with the basics, you'll solve key operational challenges, including secrets management and auto-scaling your infrastructure and applications. You'll explore alternative strategies for deploying and running your Docker applications on AWS, including Fargate and ECS Service Discovery, Elastic Beanstalk, Docker Swarm and Elastic Kubernetes Service (EKS). In addition to this, there will be a strong focus on adopting an Infrastructure as Code (IaC) approach using AWS CloudFormation. By the end of this book, you'll not only understand how to run Docker on AWS, but also be able to build real-world, secure, and scalable container platforms in the cloud.
Table of Contents (26 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
Index

Deploying and testing ECS task networking


You are now ready to deploy your changes and verify that ECS task networking is working correctly. If you run the aws cloudformation deploy command, the following should happen:

  • A new revision of the application task definition will be created, which is configured for ECS task networking.
  • The ECS service configuration will detect the changes and attempt to deploy the new revision, along with the ECS service configuration changes. ECS will dynamically attach a new ENI to the private subnet and allocate this ENI to a new ECS task for the ApplicationService resource.

Once deployment is complete, you should verify your application is still working and once you have done this, you can browse to the ECS console, click on your ECS service, and select the current task running for the service. 

The following screenshot shows the ECS task screen:

 

ECS task in task networking mode

As you can see, the network mode of the task is now awsvpc, and an ENI has been dynamically...