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

Configuring an ECS task definition for Fargate


You are now ready to start defining your ECS resources, which you will configure to use the AWS Fargate service and leverage the service discovery resources that you created in the previous section.

When configuring ECS task definitions to support Fargate, there are some key considerations that you need to understand:

  • Launch type: An ECS task definition includes a parameter called RequiresCompatibilities, which defines the compatible launch types for the definition. The current launch types include EC2, which refers to ECS tasks launched on traditional ECS clusters, and FARGATE, which refers to ECS tasks launched on Fargate. By default, the RequiresCompatibilities parameter is configured as EC2, meaning that you must explicitly configure this parameter if you want to use Fargate.
  • Network mode: Fargate only supports the awsvpc network mode, which we discussed in Chapter 10 - Isolating Network Access.
  • Execution role: Fargate requires you to configure...