clean up the environment (#16430)

content/en/docs/tasks/configure-pod-container/configure-persistent-volume-storage.md

@@ -160,6 +160,22 @@ hostPath volume:
 
     Hello from Kubernetes storage
 
+## Clean up
+
+Delete the Pod,  the PersistentVolumeClaim and the PersistentVolume:
+
+```shell
+kubectl delete pod task-pv-pod
+kubectl delete pvc task-pv-claim
+kubectl delete pv task-pv-volume
+```
+
+Remove the file:
+
+```shell
+sudo rm -rf /mnt/data
+```
+
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