June 2021
Intermediate to advanced
335 pages
5h 50m
Chinese
Content preview from Kubernetes编程
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84
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第
3
章
源也有分组和版本号，所以也有对应的
GroupVersionResource
概念，简写为
GVR
。
每种
GVR
对应一个
HTTP
（基础）路径。
GVR
用于标识
Kubernetes API
的
REST
端点。比如
apps/v1.deployments
这个
GVR
映射为
/apis/apps/v1/
namespaces/
namespace
/deployments
。
客户端库使用这种映射来构造
HTTP
路径，以便访问
GVR
。
区分命名空间级别或集群级别的资源
你需要了解有两种
GVR
：命名空间级别或集群级别的，它们的
HTTP
路径是不同的。以
Deployment
为例，它是一个命名空间级别的资源，
所以在它的
HTTP
路径中包含了命名空间。其他一些
GVR
，比如
rbac.
authorization.k8s.io/v1.clusterroles
是集群级别的，可以通过
apis/rbac.
authorization.k8s.io/v1/clusterroles
这样的路径来访问它。
资源名称习惯上使用小写字母并使用复数型式，通常与其型别的复数型式对
应。它们必须遵循
DNS
路径的标签格式（
RFC 1025
）。由于资源会直接映射
成
HTTP
路径，所以这样的规定并不奇怪。
3.5.3 REST
映射
GVK
与
GVR
之间的映射关系被称为
REST
映射。
RestMapper
是一个
Golang
的接口，用于请求一个
GVK
所对应的
GVR
：
RESTMapping(gk schema.GroupKind, versions ...string) ...
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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.