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Docker on Amazon Web Services

You're reading from   Docker on Amazon Web Services Build, deploy, and manage your container applications at scale

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Product type Paperback
Published in Aug 2018
Publisher Packt
ISBN-13 9781788626507
Length 822 pages
Edition 1st Edition
Tools
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Author (1):
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Justin Menga Justin Menga
Author Profile Icon Justin Menga
Justin Menga
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Table of Contents (26) Chapters Close

Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
1. Container and Docker Fundamentals FREE CHAPTER 2. Building Applications Using Docker 3. Getting Started with AWS 4. Introduction to ECS 5. Publishing Docker Images Using ECR 6. Building Custom ECS Container Instances 7. Creating ECS Clusters 8. Deploying Applications Using ECS 9. Managing Secrets 10. Isolating Network Access 11. Managing ECS Infrastructure Life Cycle 12. ECS Auto Scaling 13. Continuously Delivering ECS Applications 14. Fargate and ECS Service Discovery 15. Elastic Beanstalk 16. Docker Swarm in AWS 17. Elastic Kubernetes Service 1. Assessments 2. Other Books You May Enjoy Index

Configuring lifecycle policies


If you have followed along in this chapter, you will have published the todobackend image to your ECR repository several times, and chances are, you will have created what are known as orphan images in your ECR repository. In earlier chapters, we discussed orphaned images that were being created in your local Docker Engine, and defined these an image whose tag has been superseded by a newer image, effectively leaving the older images nameless and hence "orphaned."

If you browse to your ECR repository and select the Images tab in the ECS console, you may notice that you have a few images that no longer have a tag, which will be because you pushed several images with the latest tag, that have superseded the now-orphaned images:

Orphaned ECR images

In the preceding figure, notice that your storage usage in ECR has now tripled, even though you only have one current latest image, which means you may also be paying triple the storage costs. Of course you can manually...

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