June 2021
Intermediate to advanced
335 pages
5h 50m
Chinese
Content preview from Kubernetes编程
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30
第
2
章
Kubernetes API
基础
在本章中我们会介绍
Kubernetes API
的基础知识，包括深入
API
服务器的内
部机制、
API
本身，以及如何通过命令行来调用
API
。我们会介绍
Kubernetes
API
中的一些概念，比如资源（
Resource
）和 型 别（
Kind
），以 及 组（
Grouping
）
和版本（
Versioning
）。
2.1 API
服务器
Kubernetes
集群由一系列节点组成（构成集群的机器），这些节点分属于不
同的角色，如图
2-1
所示，主控节点上的控制平面由
API
服务器、控制器管
理器和调度器组成。
API
服务器是完成中心管理的实体，也是唯一一个直接
与分布式存储组件
etcd
交互的组件。
API
服务器包含以下的职责：
•
提供
Kubernetes API
。这个
API
会在集群内被主控节点、工作节点组件和
原生
Kubernetes
应用直接调用，也可以被集群外的一些客户端程序调用，
比如
kubectl
。
•
为其他集群组件提供代理，比如
Kubernetes
管理大盘、日志串流、服务端口，
以及提供
kubectl exec
会话。
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.