Apple Qmaster Pane of System Preferences

Use the Apple Qmaster pane of System Preferences to activate, create, or make changes to Apple Qmaster cluster-controlling and processing services (including passwords and scratch storage locations).

Figure. Diagram highlighting the “Share this computer as” section and the Services section in the Apple Qmaster pane of System Preferences.

For details about using the Apple Qmaster pane of System Preferences, see:

Also see the Apple Qmaster User Manual for more information, including information about creating an extended node cluster that uses nodes without Apple Qmaster installed.

To open the Apple Qmaster pane of System Preferences
  1. Open System Preferences.

  2. Click the Apple Qmaster button, located in the Other section.

The Apple Qmaster pane appears.

Figure. Apple Qmaster pane of System Preferences.

About Basic Settings in the Apple Qmaster Preferences Pane

You can use the Setup pane within the Apple Qmaster preferences pane to configure your distributed processing system.

Figure. Apple Qmaster pane of System Preferences.
Sharing Settings
  • “Share this computer as” buttons: Use these buttons to assign a distributed processing role to your computer.
    • QuickCluster with services: Select this option to create an “instant” cluster with unmanaged services. See About QuickClusters for more information.
    • Services and cluster controller: Select this option to build a cluster in Apple Qadministrator. See Creating Clusters with Apple Qadministrator for more information.
    • Services only: Select this option to make this computer a service node only. Service nodes perform the processing of batches. They can be included in QuickClusters or in managed clusters. See Managed vs. Unmanaged Services for more information.
Services Settings
QuickCluster Settings
  • “Identify this QuickCluster as” field: Use this field to change the name of a QuickCluster. For more information, see About QuickClusters.
  • “Include unmanaged services from other computers” checkbox: Select this checkbox to have Compressor and Apple Qmaster use the available unmanaged computers on your network for distributed processing. For more information on this option, see About QuickClusters and Managed vs. Unmanaged Services.
Security Settings
  • “Require password” checkbox: If you want to control who is able to include a specific service node or cluster controller in a cluster, select this checkbox to open a password dialog to enter and verify a password. For more information, see Setting a Service Password for Including a Computer in a Cluster.
  • Change Password button: Click this button to open a password dialog to enter and verify a new password.
Start Sharing, Reset Services, and Lock Settings
  • Start Sharing button: Click this button to enable the service node or cluster controller you are setting up.
  • Reset Services button: Click this button to restart services in the Apple Qmaster distributed processing system.
  • “Click the lock to make changes/Click the lock to prevent further changes” button: If the “Click the lock to make changes” message appears next to the lock, click the lock icon and type the administrator user name and password for your computer.

About Advanced Settings in the Apple Qmaster Preferences Pane

You can use the Advanced pane within the Apple Qmaster preferences pane to further configure your distributed processing system.

Figure. Advanced pane within the Apple Qmaster preferences pane
Advanced Service Settings

Use these features to schedule service restarts and service availability.

  • “Restart all services every 24 hours” checkbox: Selecting the “Restart all services every 24 hours” checkbox ensures a robust distributed processing system. Refreshing the services periodically prevents increased virtual memory sizes and memory leaks in third-party software.
  • “Set schedule for unmanaged services” button: If you enabled unmanaged services, you can open a calendar interface and schedule the availability of these services to the distributed processing system. For information on using the calendar interface, see Scheduling Service Availability.
Shared Cluster Storage

Use these features to configure scratch storage for this computer’s cluster controller. For more information on cluster storage, see Using Cluster Storage.

  • Delete Files Older Than N Days field: Enter the number of days temporary process files may remain on the cluster’s scratch location before they are automatically deleted. If you anticipate a transcoding session that will last up to seven days or longer, you must adjust this value.
  • Cluster Storage button: Enter a local folder directory to change the scratch location for the cluster’s temporary process files. See Using Cluster Storage for more information.
Network

Use these features to configure network settings.

  • “Allow discovery via Bonjour” checkbox: By default, this checkbox is selected to have the Apple Qmaster distributed processing system use the Bonjour networking technology. You can deselect the “Allow discovery via Bonjour” checkbox for enhanced security. This will prevent detection of your computer over a Bonjour network. This feature requires Mac OS X v10.4 or later.
  • “Enable Port Range” checkbox and fields: You can define which ports Apple Qmaster uses for service advertisements with the Enable Port Range checkbox and text fields in the Network section of the Advanced pane within the Apple Qmaster pane of System Preferences. For more information, see Defining Ports for Service Advertisements.
Extras

Use these features to configure additional settings.

  • “Log service activity to file” checkbox: If this checkbox is selected, an activity log is created and updated regularly with information about the Apple Qmaster actions on this computer. Logs are stored in /Library/Logs/Qmaster/. To turn this feature off, deselect the checkbox.

    Note: You can also access this log information using the Log button in Apple Qadministrator or the Log tab in Batch Monitor.

  • “Show Apple Qmaster service status in menu bar” checkbox: If this checkbox is selected, an Apple Qmaster icon appears in the computer’s menu bar. The menu bar item provides Apple Qmaster status and activity information. For more information, see Service Node Status Indicator in the Menu Bar.
  • “Identify this computer to Qadministrator as” field: By default, a computer is identified on the network by its computer name (as it is entered in the Sharing pane of System Preferences). You can change this name to something more meaningful if you like, since it is the name used to identify this computer in the Apple Qadministrator application. If you are setting up a managed cluster controller, this is the name that will appear in the Apple Qadministrator Controller pop-up menu.