Deleting a cluster removes it from the nodes area. Once it is deleted, you will no longer be able to display metrics or run scripts on any node in the cluster.
To delete a cluster:
Select Delete from the option menu.
Click in the Group field and type the name of the group the node is to be deleted from, or choose the group from the drop-down list. If you choose a group that does not contain the cluster, the cluster is not deleted.
Click in the Node field and type the name of the cluster to be deleted, or choose the cluster from the drop-down list.
Click on Apply or OK.