Kubernetes

by David K. Rensin

Released September 2015

Publisher(s): O'Reilly Media, Inc.

ISBN: 9781491931875

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Book description

As remarkable as Docker containers are, they still need to be heavily scheduled and orchestrated to run efficiently, and seamlessly replaced and re-balanced when they fail. It’s a big job, well beyond the abilities of Chef, Puppet, and similar tools. This O'Reilly report introduces you to Kubernetes, a cluster management system from Google that’s capable of scheduling and launching roughly 7,000 containers a second.

Dave Rensin, who directs Global Cloud Support and Services at Google, explains piece-by-piece how this system works. If you’ve created at least one simple container with Docker, you’ll understand how to get started with Kubernetes by using one of several options.

Examine pods, a collection of containers bundled and scheduled together
Run through volumes, the filesystems your container can see and use
Create and organize pods with labels and annotations
Use replication controllers to manage replicas: multiple copies of a pod
Set up services, long-lived endpoints that identify a set of pods in your cluster
Get started using your own servers, VMs from the public cloud, or a managed offering from a major cloud provider
Find examples on GitHub of Kubernetes in use, including WordPress and Guestbook