Chapter 13: Extending Kubernetes with CRDs
This chapter explains the many possibilities for extending the functionality of Kubernetes. It begins with a discussion of the Custom Resource Definition (CRD), a Kubernetes-native way to specify custom resources that can be acted on by the Kubernetes API using familiar kubectl commands such as get, create, describe, and apply. It is followed by a discussion of the Operator pattern, an extension of the CRD. It then details some of the hooks that cloud providers attach to their Kubernetes implementations, and ends with a brief introduction to the greater cloud-native ecosystem. Using the concepts learned in this chapter, you will be able to architect and develop extensions to your Kubernetes cluster, ...
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