kubectl delete
通过配置文件名、stdin、资源名称或label选择器来删除资源。
支持JSON和YAML格式文件。可以只指定一种类型的参数：文件名、资源名称或label选择器。
有些资源，如pod，支持优雅的（graceful）删除，因为这些资源一般是集群中的实体，所以删除不可能会立即生效，这些资源在强制终止之前默认定义了一个周期（宽限期），但是你可以使用--grace-period flag来覆盖该值，或者通过pass --now设置该周期为1。
如果托管Pod的Node节点已经停止或者无法连接API Server，使用delete命令删除Pod需等待时间更长。要强制删除资源，需指定- force flag，且设置周期（宽限期）为0。
如果执行强制删除Pod，则调度程序会在节点释放这些Pod之前将新的Pod放在这些节点上，并使之前Pod立即被逐出。
注意：执行delete命令时不会检查资源版本，如果在执行delete操作时有人进行了更新操作，那么更新操作将连同资源一起被删除。
语法
$ delete ([-f FILENAME] | TYPE [(NAME | -l label | --all)])
示例
使用 pod.json中指定的资源类型和名称删除pod。
kubectl delete -f ./pod.json
根据传入stdin的JSON所指定的类型和名称删除pod。
cat pod.json | kubectl delete -f -
删除名为“baz”和“foo”的Pod和Service。
kubectl delete pod,service baz foo
删除 Label name = myLabel的pod和Service。
kubectl delete pods,services -l name=myLabel
强制删除dead node上的pod
kubectl delete pod foo --grace-period=0 --force
删除所有pod
kubectl delete pods --all
Flags
| Name | Shorthand | Default | Usage |
|---|---|---|---|
| all | false | select all resources in the namespace of the specified resource types. | |
| cascade | true | If true, cascade the deletion of the resources managed by this resource (e.g. Pods created by a ReplicationController). Default true. | |
| filename | f | [] | Filename, directory, or URL to files containing the resource to delete. |
| force | false | Immediate deletion of some resources may result in inconsistency or data loss and requires confirmation. | |
| grace-period | -1 | Period of time in seconds given to the resource to terminate gracefully. Ignored if negative. | |
| ignore-not-found | false | Treat "resource not found" as a successful delete. Defaults to "true" when --all is specified. | |
| include-extended-apis | true | If true, include definitions of new APIs via calls to the API server. [default true] | |
| now | false | If true, resources are signaled for immediate shutdown (same as --grace-period=1). | |
| output | o | Output mode. Use "-o name" for shorter output (resource/name). | |
| recursive | R | false | Process the directory used in -f, --filename recursively. Useful when you want to manage related manifests organized within the same directory. |
| selector | l | Selector (label query) to filter on. | |
| timeout | 0s | The length of time to wait before giving up on a delete, zero means determine a timeout from the size of the object |
