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

Summary


In this chapter, you created a solution for managing the life cycle of your ECS container instances and ensuring the applications and services running on your ECS clusters are not impacted any time you need to terminate and replace an ECS container instance within your ECS cluster.

You learned how to configure rolling updates for your EC2 Auto Scaling groups, by leveraging CloudFormation update policies that enable you to control how new instances can be added to your Auto Scaling groups in a rolling fashion.  You saw that this feature works well at an Auto Scaling and EC2 instance level, however you found that the abrupt termination of existing ECS container instances in your cluster causes outages for your applications.

To address this challenge, you created an EC2 life cycle hook registered for EC2_INSTANCE_TERMINATING events and configured this hook to publish notifications to an SNS topic, which in turn triggers a Lambda function. This function is responsible for locating the...