Cloud & Networking
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You're reading from  The KCNA Book

Product typeBook
Published inJun 2023
PublisherPackt
ISBN-139781835080399
Edition1st Edition
Tools
Kubernetes
Concepts
Containerization
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Author (1)
Nigel Poulton
Nigel Poulton
author image
Nigel Poulton

Nigel Poulton is a cloud-native subject matter expert who spends his life creating books and training videos on the latest cloud technologies. He is the author of best-selling books on Docker and Kubernetes and the most popular online training videos on the same topic. He is a Docker Captain. Prior to this, Nigel has held various infrastructure roles for large enterprises. When he is not playing with technology, he is dreaming about it. When he is not dreaming about it, he is reading and watching sci-fi. He wishes he lived in the future so he could explore spacetime, the universe, and tons of other mind-blowing stuff. He likes cars, football (soccer), and food. He has a fabulous wife and three children.
Read more about Nigel Poulton

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The Kubernetes API and API server

If you’re new to the concept of APIs, you should think of the Kubernetes API as a catalog listing every possible Kubernetes object and their properties. This catalog (API) is accessed via the API server.

For example, Kubernetes defines a lot of objects such as pods, deployments, replicasets, statefulsets, cronjobs, services, ingresses, network policies, and more. All of these are defined in the API, along with all of their properties that can be used to configure them. When you deploy an object, such as a deployment, you define it in a declarative manifest that you send to the API server where it’s authenticated, authorised, and scheduled to the cluster.

If you try to deploy an object that isn’t defined in the API, the operation will fail. Also, if you try and configure a property of an object that no longer exists, it will fail.

The Kubernetes API is divided into named groups to make it easier to understand, navigate, and expand...

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The KCNA Book
Published in: Jun 2023Publisher: PacktISBN-13: 9781835080399
© 2023 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Nigel Poulton

Nigel Poulton is a cloud-native subject matter expert who spends his life creating books and training videos on the latest cloud technologies. He is the author of best-selling books on Docker and Kubernetes and the most popular online training videos on the same topic. He is a Docker Captain. Prior to this, Nigel has held various infrastructure roles for large enterprises. When he is not playing with technology, he is dreaming about it. When he is not dreaming about it, he is reading and watching sci-fi. He wishes he lived in the future so he could explore spacetime, the universe, and tons of other mind-blowing stuff. He likes cars, football (soccer), and food. He has a fabulous wife and three children.
Read more about Nigel Poulton

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