Sun Grid Engine Information Center
Administering Sun Grid Engine
Index

Configuring Hosts and Clusters

This section provides background information about configuring various aspects of the Grid Engine system.

For specific configuration tasks, see the following topics:

• Basic Cluster Configuration
• Changing the Master Host
• Configuring Shadow Master Hosts
• Configuring Hosts With QMON
• Configuring Hosts From the Command Line

About Hosts and Daemons

You can classify Grid Engine system hosts into four categories, depending on which daemons are running on the system and on how the hosts are registered at sge_qmaster:

Note A host can belong to more than one class. By default, the master host is an administration host and a submit host.

• Master host – The master host runs the master daemon sge_qmaster. sge_qmaster controls all Grid Engine system components such as queues and jobs. It also maintains tables that contain information such as user access permissions and the status of the components. The master host usually runs the scheduler sge_schedd. The master host requires no further configuration other than that performed by the installation procedure. For information about how to initially set up the master host, see How to Install the Master Host. For information about how to configure dynamic changes to the master host, see Configuring Shadow Master Hosts.
• Execution hosts – Execution hosts are nodes that have permission to run jobs. Therefore they host queue instances, and they run the execution daemon sge_execd. An execution host is initially set up by the installation procedure, as described in How to Install Execution Hosts.
• Administration hosts – Administration hosts have permission to perform any kind of administrative activity, even though they are not the master host. See the qconf(1) man page for details. Administrative hosts are set up with the following command:

  qconf -ah <hostname>
  

• Submit hosts – Submit hosts allow for submitting and controlling batch jobs only. In particular, a user who is logged into a submit host can use qsub to submit jobs, can use qstat to control the job status, or can run the graphical user interface QMON. Submit hosts are set up using the qconf -as hostname command. See the qconf(1) man page for details.

About Configuring Hosts

The Grid Engine software maintains object lists for all types of hosts except for the master host. The lists of administration host objects and submit host objects indicate whether a host has administrative or submit permission. The list of execution host objects includes other parameters. Among these parameters are the load information that is reported by the sge_execd running on the host, and the load parameter scaling factors that are defined by the administrator.

You can configure host objects with QMON or from the command line.

Invalid Host Names

The following host names are invalid, reserved, or otherwise not allowed to be used:

• global
• template
• all
• default
• unknown
• none