Book Image

Mastering Docker - Second Edition

By : Russ McKendrick, Scott Gallagher
Book Image

Mastering Docker - Second Edition

By: Russ McKendrick, Scott Gallagher

Overview of this book

<p>Docker has been a game-changer when it comes to how modern applications are deployed and architectured. It has now grown into a key driver of innovation beyond system administration, with an impact on the world of web development and more. But how can you make sure you're keeping up with the innovations it's driving? How can you be sure you're using it to its full potential?</p> <p>This book shows you how; it not only demonstrates how to use Docker more effectively, it also helps you rethink and reimagine what's possible with Docker.</p> <p>You will also cover basic topics such as building, managing and storing images along with best practices to make you confident before delving more deeply into Docker security.</p> <p>You'll find everything related to extending and integrating Docker in new and innovative ways. Docker Swarm and Docker Compose will help you take control of your containers in an efficient way.</p> <p>By the end of the book, you will have a broad and detailed sense of exactly what's possible with Docker and how seamlessly it fits in with a range of other platforms and tools.</p>
Table of Contents (21 chapters)
Title Page
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
Index

Monitoring


Next, we are going to take a look at monitoring our containers and also Docker hosts. In Chapter 4, Managing Containers, we discussed the docker container top and docker container stats commands; you may recall that both of these commands show real-time information only; there is no historical data kept.

While this is great if you are trying to debug a problem as it is running or want to quickly get an idea of what is going on inside your containers, it is not too helpful if you need to look back at a problem: maybe you have configured your containers to restart if they have become unresponsive. While that will help with the availability of your application, it isn't much of a help if you need to look at why your container became unresponsive.

We are going to be looking at quite a complex setup. There are alternatives to this configuration, and also, there is ongoing development within the Docker community to make the configuration that we are going to be looking at more straightforward...