Book Image

The DevOps 2.3 Toolkit

By : Viktor Farcic
Book Image

The DevOps 2.3 Toolkit

By: Viktor Farcic

Overview of this book

Building on The DevOps 2.0 Toolkit, The DevOps 2.1 Toolkit: Docker Swarm, and The DevOps 2.2 Toolkit: Self-Sufficient Docker Clusters, Viktor Farcic brings his latest exploration of the DevOps Toolkit as he takes you on a journey to explore the features of Kubernetes. The DevOps 2.3 Toolkit: Kubernetes is a book in the series that helps you build a full DevOps Toolkit. This book in the series looks at Kubernetes, the tool designed to, among other roles, make it easier in the creation and deployment of highly available and fault-tolerant applications at scale, with zero downtime. Within this book, Viktor will cover a wide range of emerging topics, including what exactly Kubernetes is, how to use both first and third-party add-ons for projects, and how to get the skills to be able to call yourself a “Kubernetes ninja.” Work with Viktor and dive into the creation and exploration of Kubernetes with a series of hands-on guides.
Table of Contents (18 chapters)
The End
Other Books You May Enjoy

What now?

Wasn't that a ride?

Kubernetes relies heavily on available resources spread throughout the cluster. Still, it cannot do magic. We need to help it out by defining resources we expect our containers will consume.

Even though Heapster is not the best solution for collecting metrics, it is already available in our Minikube cluster, and we used it to learn how much resources our applications use and, through that information, we refined our resource definitions. Without metrics, our definitions are pure guesses. When we guess, Kubernetes needs to guess as well. A stable system is a predictable system based on facts, not someone's imagination. Heapster helped us transform our assumptions into measurable facts which we fed into Kubernetes which, in turn, used them in its scheduling algorithms.

Exploration of resource definitions led us to Quality Of Service (QoS)...