User Guide

24
Will Your Cluster Include Only Extended Nodes or Be Mixed?
If all the nodes in the cluster will be extended nodes (nodes that do not have
Apple Qmaster installed), the cluster needs one intermediary node that also acts as the
cluster controller. There is no need to use the Apple Qadministrator application at all if
you are creating a cluster that contains only an intermediary node and extended
nodes. All the configuration can be done in the Apple Qmaster pane in System
Preferences, as described in “Configuring an Intermediary Node for an Extended Node
Cluster,” next.
However, if you want a cluster that contains both regular service nodes and extended
nodes, configure an intermediary node (as described next), and then add it to a regular
cluster that already has a cluster controller. (There can be only one cluster controller
per cluster.)
Configuring an Intermediary Node for an Extended Node Cluster
Before you begin, make sure that:
 The computer that will be the intermediary service node has Apple Qmaster installed.
 The computers that will be the extended nodes are running a UNIX-based operating
system and have SSH enabled.
To configure an intermediary service node to run Apple Qmaster commands
on extended nodes:
1 Open the Apple Qmaster pane in System Preferences.
2 If this intermediary node will be part of a mixed cluster, with a different computer
acting as the cluster controller, skip this step and go to step 3. If you want this
intermediary node to be the cluster controller for this cluster, do the following:
a In the “Share this computer as” section, select one of the following radio buttons:
 Services and QuickCluster controller
 Services and cluster controller
b Enter a name in the “Identify this QuickCluster as” field. This is the name you will see
in the Cluster list in Apple Qadministrator, and in the cluster pop-up menus in the
Batch Monitor and Apple Qmaster.