Book Image

Mastering Docker, Fourth Edition - Fourth Edition

Book Image

Mastering Docker, Fourth Edition - Fourth Edition

Overview of this book

Docker has been a game changer when it comes to how modern applications are deployed and created. It has now grown into a key driver of innovation beyond system administration, with a significant impact on the world of web development. Mastering Docker shows you how you can ensure that you're keeping up with the innovations it's driving and be sure you're using it to its full potential. This fourth edition not only demonstrates how to use Docker more effectively but also helps you rethink and reimagine what you can achieve with it. You'll start by building, managing, and storing images along with exploring best practices for working with Docker confidently. Once you've got to grips with Docker security, the book covers essential concepts for extending and integrating Docker in new and innovative ways. You'll also learn how to take control of your containers efficiently using Docker Compose, Docker Swarm, and Kubernetes. By the end of this Docker book, you’ll have a broad yet detailed sense of what's possible with Docker and how seamlessly it fits in with a range of other platforms and tools.
Table of Contents (22 chapters)
1
Section 1: Getting Up and Running with Docker
8
Section 2: Clusters and Clouds
16
Section 3: Best Practices

Summary

In this chapter, we looked at four different tools for launching both single-node and multi-node Kubernetes clusters. We discovered that while the method of launching each of the clusters is slightly different, once they are up and running, you get a mostly consistent experience once you start to interact with them using standard Kubernetes tools like kubectl.

At this point, I should probably confess something: two of the four tools we have covered in this chapter do not actually use Docker in the traditional sense – both MicroK8s and K3s actually use containerd.

As you may recall from Chapter 1, Docker Overview, containerd is an easily embeddable container runtime. It started life at Docker Inc., but the project was donated to the Cloud Native Computing Foundation (CNCF) – it is the container runtime of the Moby project, which Docker uses as its upstream project.

It is not only small and lightweight, but it also offers full OCI Image and OCI Runtime...