Book Image

Mastering Kubernetes - Fourth Edition

By : Gigi Sayfan
3.3 (3)
Book Image

Mastering Kubernetes - Fourth Edition

3.3 (3)
By: Gigi Sayfan

Overview of this book

The fourth edition of the bestseller Mastering Kubernetes includes the most recent tools and code to enable you to learn the latest features of Kubernetes 1.25. This book contains a thorough exploration of complex concepts and best practices to help you master the skills of designing and deploying large-scale distributed systems on Kubernetes clusters. You’ll learn how to run complex stateless and stateful microservices on Kubernetes, including advanced features such as horizontal pod autoscaling, rolling updates, resource quotas, and persistent storage backends. In addition, you’ll understand how to utilize serverless computing and service meshes. Further, two new chapters have been added. “Governing Kubernetes” covers the problem of policy management, how admission control addresses it, and how policy engines provide a powerful governance solution. “Running Kubernetes in Production” shows you what it takes to run Kubernetes at scale across multiple cloud providers, multiple geographical regions, and multiple clusters, and it also explains how to handle topics such as upgrades, capacity planning, dealing with cloud provider limits/quotas, and cost management. By the end of this Kubernetes book, you’ll have a strong understanding of, and hands-on experience with, a wide range of Kubernetes capabilities.
Table of Contents (21 chapters)
19
Other Books You May Enjoy
20
Index

Cluster API

The Cluster API (AKA CAPI) is a project from the Cluster Lifecycle SIG. Its goal is to make provisioning, upgrading, and operating multiple Kubernetes clusters easy. It supports both kubeadm-based clusters as well as managed clusters via dedicated providers. It has a cool logo inspired by the famous “It’s turtles all the way down” story. The idea is that the Cluster API uses Kubernetes to manage Kubernetes clusters.

Figure 11.1: The Cluster API logo

Cluster API architecture

The Cluster API has a very clean and extensible architecture. The primary components are:

  • The management cluster
  • The work cluster
  • The bootstrap provider
  • The infrastructure provider
  • The control plane
  • Custom resources

Figure 11.2: Cluster API architecture

Let’s understand the role of each one of these components and how they interact with each other.

Management cluster

The management cluster...