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You're reading from Mastering Docker Unlock new opportunities using Docker's most advanced features

Product type Paperback

Published in Oct 2018

Publisher

ISBN-13 9781789616606

Length 426 pages

Edition 3rd Edition

Tools

Docker

Concepts

Containerization

Authors (2):

Scott Gallagher

Russ McKendrick

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Table of Contents (17) Chapters

Preface

1. Docker Overview

2. Building Container Images FREE CHAPTER

3. Storing and Distributing Images

4. Managing Containers

5. Docker Compose

6. Windows Containers

7. Docker Machine

8. Docker Swarm

9. Docker and Kubernetes

10. Running Docker in Public Clouds

11. Portainer - A GUI for Docker

12. Docker Security

13. Docker Workflows

14. Next Steps with Docker

15. Assessments

16. Other Books You May Enjoy

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Roles within a Docker Swarm cluster

Which roles are involved with Docker Swarm? Let's take a look at the two roles a host can assume when running within a Docker Swarm cluster.

Swarm manager

The Swarm manager is a host that is the central management point for all Swarm hosts. Swarm manager is where you issue all your commands to control those nodes. You can switch between the nodes, join nodes, remove nodes, and manipulate those hosts.

Each cluster can run several Swarm managers. For production, it is recommended that you run a minimum of five Swarm managers: this would mean that our cluster can take a maximum of two Swarm manager node failures before you start to encounter any errors. Swarm managers use the Raft Consensus...

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Authors (2)

Russ McKendrick

Russ McKendrick is an experienced DevOps practitioner and system administrator with a passion for automation and containers. He has been working in IT and related industries for the better part of 30 years. During his career, he has had responsibilities in many different sectors, including first-line, second-line, and senior support in client-facing and internal teams for small and large organizations. He works almost exclusively with Linux, using open source systems and tools across dedicated hardware and virtual machines hosted in public and private clouds at Node4, where he holds the title of practice manager (SRE and DevOps). He also buys way too many records!

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Scott Gallagher

Scott Gallagher has been fascinated with technology since he played Oregon Trail in elementary school. His love for it continued through middle school as he worked on more Apple IIe computers. In high school, he learned how to build computers and program in BASIC. His college years were all about server technologies such as Novell, Microsoft, and Red Hat. After college, he continued to work on Novell, all the while maintaining an interest in all technologies. He then moved on to manage Microsoft environments and, eventually, what he was most passionate about Linux environments. Now, his focus is on Docker and cloud environments.

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