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

Testing your custom ECS container instance image


You have now completed all customizations and it is time to rebuild your image using the packer build command. Before you do this, now is a good time to verify you have the correct Packer template in place, and also have created the associated supporting files. The following example shows the folder and file structure you should now have in your packer-ecs repository:

> tree
.
├── Makefile
├── files
│   └── firstrun.sh
├── manifest.json
├── packer.json
└── scripts
    ├── cleanup.sh
    ├── cloudinit.sh
    ├── storage.sh
    └── time.sh


2 directories, 8 files

Verifying the Packer repository

Assuming everything is in place, you can now run your Packer build once again by running the make build command.

Once everything is complete and your AMI has been successfully created, you can now view your AMI in the AWS console by navigating to Services | EC2 and selecting AMIs from the menu on the left:

EC2 dashboard AMIs

In the preceding screenshot...