June 2021
Intermediate to advanced
335 pages
5h 50m
Chinese
Content preview from Kubernetes编程
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56
｜
第
3
章
通过在创建客户端前修改相对应的
REST
配置，可以让原生
Kubernetes
资源
的客户端默认使用
Protobuf
：
cfg, err := clientcmd.BuildConfigFromFlags("", *kubeconfig)
cfg.AcceptContentTypes = "application/vnd.kubernetes.protobuf,
application/json"
cfg.ContentType = "application/vnd.kubernetes.protobuf"
clientset, err := kubernetes.NewForConfig(cfg)
注意，第
4
章中将要介绍的自定义资源对象不支持通过
Protocol Buffers
编码。
3.1.5
版本与兼容性
Kubernetes API
是带版本的。在前一节中我们已经尝试使用了
v1
版本核心组
中的
Pod
对象。目前，核心组其实只有一个版本。不过对于其他的
API
组，
比如
apps
组，就同时拥有
v1
、
v1beta2
和
v1beta1
（本书写作时的最新版本）
等多个版本。如果你看一下
k8s.io/api/apps
包，会发现所有的
API
对象都有
这些版本。在
k8s.io/client-go/kubernetes/typed/apps
包中，可以看到对应版本
的客户端实现。
所有的这些版本都仅存在于客户端，与
Kubernetes
集群或
API
服务器都没有
直接关系。如果使用一个
API
服务器不支持的 ...
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