Add the section of kubectl, to be filled

Author: yeasy

SUMMARY.md

@@ -103,6 +103,7 @@
    * [简介](kubernetes/intro.md)
    * [快速上手](kubernetes/quickstart.md)
    * [架构设计](kubernetes/design.md)
+   * [kubectl 使用](kubernetes/kubectl.md)
 * [附录一：命令查询](appendix_command/README.md)
 * [附录二：常见仓库介绍](appendix_repo/README.md)
    * [Ubuntu](appendix_repo/ubuntu.md)

kubernetes/kubectl.md

@@ -0,0 +1,51 @@
+# kubectl 使用
+[kubectl](https://github.com/GoogleCloudPlatform/kubernetes) 是 Kubernetes 自带的客户端，可以用它来直接操作 Kubernetes。
+
+使用格式有两种：
+```sh
+kubectl [flags]
+kubectl [command]
+```
+
+## get
+Display one or many resources
+## describe
+Show details of a specific resource
+## create
+Create a resource by filename or stdin
+## update
+Update a resource by filename or stdin.
+## delete
+Delete a resource by filename, stdin, resource and ID, or by resources and label selector.
+## namespace
+SUPERCEDED: Set and view the current Kubernetes namespace
+## log
+Print the logs for a container in a pod.
+## rolling-update
+Perform a rolling update of the given ReplicationController.
+## resize
+Set a new size for a Replication Controller.
+## exec
+Execute a command in a container.
+## port-forward
+Forward one or more local ports to a pod.
+## proxy
+Run a proxy to the Kubernetes API server
+## run-container
+Run a particular image on the cluster.
+## stop
+Gracefully shut down a resource by id or filename.
+## expose
+Take a replicated application and expose it as Kubernetes Service
+## label
+Update the labels on a resource
+## config
+config modifies kubeconfig files
+## cluster-info
+Display cluster info
+## api-versions
+Print available API versions.
+## version
+Print the client and server version information.
+## help
+Help about any command