As you might expect, the cluster administrator manages a Remote Services cluster. The primary tool for doing so is grb_rs, which is the program that runs on the Remote Services node and accepts requests from client programs. The cluster administrator will need to start this on all of the nodes of a Remote Services cluster.
A second important administrative tool is grbcluster, which is used to issue commands to an already running cluster. Examples of cluster administrator commands include adding or removing nodes, and enabling or disabling job processing on a cluster. This tool provides a variety of commands, and is used for all three Remote Services roles. You can type grbcluster --help for a full list of commands.
For more details, please refer to the section about setting up and administering a cluster.