Book Image

The Complete Kubernetes Guide

By : Jonathan Baier, Gigi Sayfan, Jesse White
Book Image

The Complete Kubernetes Guide

By: Jonathan Baier, Gigi Sayfan, Jesse White

Overview of this book

If you are running a number of containers and want to be able to automate the way they’re managed, it can be helpful to have Kubernetes at your disposal. This Learning Path guides you through core Kubernetes constructs, such as pods, services, replica sets, replication controllers, and labels. You'll get started by learning how to integrate your build pipeline and deployments in a Kubernetes cluster. As you cover more chapters in the Learning Path, you'll get up to speed with orchestrating updates behind the scenes, avoiding downtime on your cluster, and dealing with underlying cloud provider instability in your cluster. With the help of real-world use cases, you'll also explore options for network configuration, and understand how to set up, operate, and troubleshoot various Kubernetes networking plugins. In addition to this, you'll gain insights into custom resource development and utilization in automation and maintenance workflows. By the end of this Learning Path, you'll have the expertise you need to progress from an intermediate to an advanced level of understanding Kubernetes. This Learning Path includes content from the following Packt products: • Getting Started with Kubernetes - Third Edition by Jonathan Baier and Jesse White • Mastering Kubernetes - Second Edition by Gigi Sayfan
Table of Contents (26 chapters)
Title Page
Copyright and Credits
About Packt
Contributors
Preface
Index

CoreOS


While the specifications provide us with a common ground, there are also some trends evolving around the choice of OS for our containers. There are several tailored-fit OSes that are being developed specifically to run container workloads. Although implementations vary, they all have similar characteristics. The focus is on a slim installation base, atomic OS updating, and signed applications for efficient and secure operations.

 

 

One OS that is gaining popularity is CoreOS. CoreOS offers major benefits for both security and resource utilization. It provides resource utilization by completely removing package dependencies from the picture. Instead, CoreOS runs all applications and services in containers. By providing only a small set of services required to support running containers and bypassing the need for hypervisor usage, CoreOS lets us use a larger portion of the resource pool to run our containerized applications. This allows users to gain higher performance from their infrastructure...