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 (20 chapters)

Deploying secrets to AWS


At this point, you are ready to deploy your changes to your CloudFormation stack, which you can do using the aws cloudformation deploy command we have used throughout the past few chapters:

> aws cloudformation deploy --template-file stack.yml \
    --stack-name todobackend --parameter-overrides $(cat dev.cfg) \
    --capabilities CAPABILITY_NAMED_IAM

Waiting for changeset to be created..
Waiting for stack create/update to complete
Successfully created/updated stack - todobackend

Deploying CloudFormation stack changes

The deployment will affect a number of resources as follows:

  • The resources supporting the custom resource will first be created, along with changes to the ECS task definitions being applied.
  • The custom resource called Secrets will be created, which once created will expose the key/value pairs of the todobackend/credentials secret to other CloudFormation resources.
  • The ApplicationDatabase resource will be updated, with the MasterPassword property updated...