Merge pull request #27939 from feitnomore/patch-2

Updating --cascade as false is deprecated on Kubectl 1.21

Author: k8s-ci-robot

content/en/docs/tasks/run-application/delete-stateful-set.md

@@ -43,14 +43,14 @@ You may need to delete the associated headless service separately after the Stat
 kubectl delete service <service-name>
 ```
 
-When deleting a StatefulSet through `kubectl`, the StatefulSet scales down to 0. All Pods that are part of this workload are also deleted. If you want to delete only the StatefulSet and not the Pods, use `--cascade=false`.
+When deleting a StatefulSet through `kubectl`, the StatefulSet scales down to 0. All Pods that are part of this workload are also deleted. If you want to delete only the StatefulSet and not the Pods, use `--cascade=orphan`.
 For example:
 
 ```shell
-kubectl delete -f <file.yaml> --cascade=false
+kubectl delete -f <file.yaml> --cascade=orphan
 ```
 
-By passing `--cascade=false` to `kubectl delete`, the Pods managed by the StatefulSet are left behind even after the StatefulSet object itself is deleted. If the pods have a label `app=myapp`, you can then delete them as follows:
+By passing `--cascade=orphan` to `kubectl delete`, the Pods managed by the StatefulSet are left behind even after the StatefulSet object itself is deleted. If the pods have a label `app=myapp`, you can then delete them as follows:
 
 ```shell
 kubectl delete pods -l app=myapp