3

62 Chapter 4 Creating and Administering Clusters
Setting a Service Password for Including a Computer in a Cluster
If you want to control who is able to include a specific service node or cluster controller
in a cluster, you can create a password called a service password for the computer.
Note: A service password can be stored in a user’s keychain.
To set a service password:
1 On the computer designated as the service node or cluster controller, open the
Apple Qmaster pane in System Preferences.
2 If any Apple Qmaster services are enabled on this computer, temporarily turn them off
by clicking Stop Sharing.
3 Click Require Password.
The password sheet opens.
4 Enter and verify a password, and click OK.
5 Click the relevant checkbox or the Start Sharing button to restart the services you need
on this computer.
Cluster Storage: Setting a Scratch Storage Location
By default, the Apple Qmaster distributed processing system saves temporary process
files in the /var/spool/qmaster directory on the cluster controller. You can also choose
any other location on a local disk. Computers in the cluster will access this location
as needed.
Selecting a Cluster Storage Location
Follow the steps below to change the cluster storage location.
To select a new storage location for a cluster:
1 On the cluster controller, open the Apple Qmaster pane in System Preferences.
2 If any Apple Qmaster services are enabled on this computer, click Stop Sharing to
temporarily turn them off.