PowerScale: OneFS: How to view an SPN list in a Microsoft Active Directory environment
Summary: How to view an SPN list in a Microsoft Active Directory environment.
Instructions
Introduction
Whenever a client identifies a service instance, a service principal name (SPN) is assigned to that instance. This SPN is unique, even for multiple service instances on computers with an Active Directory environment. If multiple names are used by clients for authentication purposes, a service instance is assigned multiple SPNs, one unique SPN for each name. For more information, see the Service Principal Names article in the Microsoft Dev Center.
In addition, you can manually create SPNs for the machine account. See "How to create SPN accounts to allow Kerberos authentication using SmartConnect DNS entries," KB 22042 .
In OneFS, if a cluster notifies you if SPNs are missing, you must find out which ones are missing. See "Authentication services can fail if the Service Principal Name (SPN) is incorrect or missing," 89649 .
Details
To view a list of SPNs that are registered against the cluster's machine account, run the following command:
isi auth ads spn list
Output similar to the following is displayed, where "
MyCluster" is the name of the host computer on which the service instance is running, and MY.DOMAIN.CORP is the name of the domain:
SPNs registered for MyCluster:
HOST/MyCluster
HOST/MyCluster.MY.DOMAIN.CORP