June 2021
Intermediate to advanced
335 pages
5h 50m
Chinese
Content preview from Kubernetes编程
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概论
｜
11
与此同时，如果可以提供一个
kubectl
的插件来提高命令行的用户体验就更
好了，这样就可以通过类似
kubectl at "02:00 Jul 3" echo "Kubernetes
native rocks!"
这样的命令来使用这个定时运行工具了。本书中不会讨论这
部分内容，不过你可以参考
Kubernetes
文档进行学习。
这个例子会贯穿全书，我们将通过这个例子来解释
Kubernetes
中的各种组件
和内部运行机制，以及如何对它进行扩展。
第
8
章和第
9
章中会实现一个更复杂的例子，通过在集群中增加披萨和配料
对象来模拟一个披萨店。参考“
8.2
示例：一个披萨店”的内容了解详情。
1.3
扩展模式
Kubernetes
是一个强大且天然可扩展的系统。有很多种方法来定制、扩展
Kubernetes
，比如：修改控制平面组件（比如
kubelet
或
Kubernetes API
服务
器）的配置文件和参数，或者通过各种预定义的扩展点：
•
所谓“云服务提供商接口”，传统上是控制器管理器自身的一部分。在
1.11
版本中，
Kubernetes
通过提供自定义
cloud-controller-manager
进程提
供了集成外部云服务的能力。云服务提供商可以引入一些专用的工具，比
如负载均衡或虚拟机（
VM
）。
•
二进制的
kubelet
插件，用于网络、硬件设备（比如
GPU
）、存储和容器服务。
•
二进制的
kubectl
插件。
•
调用
API
服务器中的扩展功能，比如通过
Webhook
实现动态准入控制（参
考第
9
章“自定义资源进阶”）。 ...
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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.