June 2021
Intermediate to advanced
335 pages
5h 50m
Chinese
Content preview from Kubernetes编程
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204
｜
第
8
章
相似，在聚合自定义
API
服务器中，委托授权的逻辑基本上都是由
k8s.io/
apiserver
库自动实现的。
8.4
开发自定义
API
服务器
在前面的章节中，我们学习了聚合
API
服务器的架构。在这一部分，我们将
学习如何用
Golang
实现聚合自定义
API
服务器。
Kubernetes API
服务器是通过
k8s.io/apiserver
库实现的，自定义
API
服务器
也会用使用几乎相同的实现。主要的不同点在于我们的自定义
API
服务器
会在
Kubernetes
集群内运行。这意味着我们可以假设集群里有一个可用的
kube-apiserver
，并且可以用它来代理授权或获取其他
Kubernetes
原生资源。
我们同样可以假设集群中有可用的
etcd
，并且可以将其用于聚合自定义
API
服务器。这个
etcd
是否与
Kubernetes API
服务器共享的并不关键。我们的自
定义
API
服务器将使用一个不同的
etcd
键值空间来避免冲突。
本章的代码示例来自
GitHub
上的示例代码，可以从那里获取完整的源码。我
们在此只摘录感兴趣的部分，但是你可以在完整的示例项目中开展各种实验，
并在一个真实的集群里运行它，这样的实践对于学习新知识非常重要。
这个
pizza-apiserver
项目实现了“
8.2
示例：一个披萨店”中列出的示例
API
。
8.4.1
选项、配置模式和启动基础设施
k8s.io/apiserver
库使用一种“选项
-
配置”模式来创建一个可运行的
API
服
务器。
我们先来看看可以通过标记来配置的选项结构体。可以从
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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.