NetApp
Cluster : Configuration > Services > Kerberos : Managing Kerberos : Editing Kerberos realm configurations

Editing Kerberos realm configurations
You can use System Manager to modify a Kerberos realm configuration at the cluster level.
Steps 
1.
From the Home tab, double-click the appropriate storage system.
2.
3.
Click Configuration > Services > Kerberos.
4.
Select the Kerberos realm configuration that you want to modify and click Edit.
5.
6.
Confirm the details and click Finish to complete the wizard.