The Kerberos SPN Format Generator validates the node host name. If the node host name is not valid, the utility does not generate an SPN. Instead, it displays the following message: Unable to resolve host name.
<application service name>/<node name>/<domain name>@<REALM NAME>
Keytab File Name
Format for the name of the keytab file to be created for the associated SPN. The keytab file name is case sensitive.
The following table describes the keytab file name formats: