Book Image

Getting Started with Kubernetes - Third Edition

By : Jonathan Baier, Jesse White
Book Image

Getting Started with Kubernetes - Third Edition

By: Jonathan Baier, Jesse White

Overview of this book

Kubernetes has continued to grow and achieve broad adoption across various industries, helping you to orchestrate and automate container deployments on a massive scale. Based on the recent release of Kubernetes 1.12, Getting Started with Kubernetes gives you a complete understanding of how to install a Kubernetes cluster. The book focuses on core Kubernetes constructs, such as pods, services, replica sets, replication controllers, and labels. You will understand cluster-level networking in Kubernetes, and learn to set up external access to applications running in the cluster. As you make your way through the book, you'll understand how to manage deployments and perform updates with minimal downtime. In addition to this, you will explore operational aspects of Kubernetes , such as monitoring and logging, later moving on to advanced concepts such as container security and cluster federation. You'll get to grips with integrating your build pipeline and deployments within a Kubernetes cluster, and be able to understand and interact with open source projects. In the concluding chapters, you'll orchestrate updates behind the scenes, avoid downtime on your cluster, and deal with underlying cloud provider instability within your cluster. By the end of this book, you'll have a complete understanding of the Kubernetes platform and will start deploying applications on it.
Table of Contents (23 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Chapter 3. Working with Networking, Load Balancers, and Ingress

In this chapter, we will discuss Kubernetes' approach to cluster networking and how it differs from other approaches. We will describe key requirements for Kubernetes networking solutions and explore why these are essential for simplifying cluster operations. We will investigate DNS in the Kubernetes cluster, dig into the Container Network Interface (CNI) and plugin ecosystems, and will take a deeper dive into services and how the Kubernetes proxy works on each node. Finishing up, we will look at a brief overview of some higher level isolation features for multitenancy.

In this chapter, we will cover the following topics:

  • Kubernetes networking
  • Advanced services concepts
  • Service discovery
  • DNS, CNI, and ingress
  • Namespace limits and quotas