Book Image

CoreOS Essentials

By : Rimantas Mocevicius
Book Image

CoreOS Essentials

By: Rimantas Mocevicius

Overview of this book

<p>This book will help you get up and running on using CoreOS to develop effective computing networks. You will begin with understanding the basics of CoreOS. You will then discover what etcd is and how it is used, followed by launching Docker containers with systemd and fleet. Learn how to manage clusters, read system logs, and customize with cloud-config. You will set up the deployment to production using Docker builder and a private Docker registry. You will also see how to set up and use CoreUpdate and Enterprise Registry, and get an introduction to the new App Container called rkt and the newly introduced cluster manager known as Kubernetes.</p> <p>This book will equip you with all the information you need to leverage the power of CoreOS and the related containers for the effective deployment of your applications.</p>
Table of Contents (17 chapters)
CoreOS Essentials
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

What is Kubernetes?


Google has been running everything in containers for more than decade. Internally, they use a system called Borg (http://research.google.com/pubs/pub43438.html), the predecessor of Kubernetes, to scale and orchestrate containers across servers.

Lessons learned from Borg were used to build Kubernetes, an open source container orchestration system. It became popular very quickly when it was released in June 2014.

All of the best ideas from Borg were incorporated into Kubernetes. Many of Borg's developers now work on Kubernetes.

Kubernetes received thousands of stars at it's GitHub project (https://github.com/GoogleCloudPlatform/kubernetes), and hundreds of supporters from the open source community and companies such as CoreOS, Red Hat, Microsoft, VMware, and so on.

Primary components of Kubernetes

Kubernetes can be run on any modern Linux operating system.

Here are the main components of Kubernetes:

  • Master: This is the set of main Kubernetes control services, usually running...