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58 Chapter 4 Creating and Administering Clusters
Modifying and Deleting Clusters With Apple Qadministrator
Using Apple Qadministrator, you can change and delete clusters. Once a cluster is
configured, you can use Apple Qadministrator to deactivate and reactivate the processing
services on a computer in the cluster, to add a service node to the cluster, or to remove a
service node from the cluster.
Note: Unless Apple Qadministrator and the QuickCluster are on the same computer,
QuickClusters are not visible in Apple Qadministrator. Only “managed” clusters can be
modified and deleted in Apple Qadministrator. Managed clusters are clusters that were
created in Apple Qadministrator. QuickClusters must be modified in the Apple Qmaster
pane in System Preferences.
Note: If you want to change the cluster controller in a cluster, you need to delete the
cluster and then re-create it with a new cluster controller.
To modify a cluster:
1 Open Apple Qadministrator.
2 In the Cluster list (on the left side of the window), select the cluster you want to change.
If the cluster’s Service Nodes list isn’t already showing individual services, click the
disclosure triangle in the Name column to reveal them.
Make any of the following changes:
 To temporarily turn off the processing services on a computer in the cluster, deselect the
Active checkbox for that service node.
 To remove a service node from the cluster, select the computer and drag it back to the
Qmaster Service Browser at the bottom of the Apple Qadministrator window.
 To add a service node to the cluster, drag it from the service browser list at the bottom
of the window to the service nodes list.
To remove nodes from a
cluster, drag them to the
Qmaster Service Browser.