The Galaxy Configuration Utility (GCU) is a DECwindows Motifapplication that allows system managers to configure and managean OpenVMS Galaxy system from a single workstation window.
Usingthe GCU, system managers can:
Display the active Galaxy configuration.
Reassign resources among Galaxy instances.
View resource-specific characteristics.
Shut down or reboot one or more Galaxy instances.
Invoke additional management tools.
Create and engage Galaxy configuration models.
Create a single-instance Galaxy on any Alpha system(for software development on non-Galaxy hardware platforms).
View the online Galaxy documentation.
Determine hot-swap characteristics of the currenthardware platform.
The GCU resides in the SYS$SYSTEM directory along with a smallnumber of files containing configuration information.
The GCU consists of the following files:
File
Description
SYS$SYSTEM:GCU.EXE
GCU executable image
SYS$MANAGER:GCU.DAT
Optional DECwindows resourcefile
SYS$MANAGER:GALAXY.GCR
Galaxy Configuration Ruleset
SYS$MANAGER:GCU$ACTIONS.COM
System management procedures
SYS$MANAGER:xxx.GCM
User-defined configurationmodels
SYS$HELP:GALAXY_GUIDE.DECW$BOOK
Online help in Bookreader form
The GCU can be run from any Galaxy instance. If the systemdoes not directly support graphics output, then the DECwindows displaycan be set to an external workstation or suitably configured PC.However, the GCU application itself must always run on the Galaxysystem.
When the GCU is started, it loads any customizations foundin its resource file (GCU.DAT); then it loads the Galaxy ConfigurationRuleset (GALAXY.GCR). The ruleset file contains statements thatdetermine the way the GCU displays the various system components,and includes rules that govern the ways in which users can interactwith the configuration display. Users do not typically alter theruleset file unless they are well versed in its structure or aredirected to do so by an HP Services engineer.
After the GCU display becomes visible, the GCU determineswhether the system is currently configured as an OpenVMS Galaxyor as a single-instance Galaxy on a non-Galaxy platform. If thesystem is configured as a Galaxy, the GCU displays the active Galaxyconfiguration model. The main observation window displays a hierarchicalview of the Galaxy. If the system has not yet been configured asa Galaxy, the GCU prompts you as to whether or not to create a single-instanceGalaxy. Note that the GCU can create a single-instance Galaxy onany Alpha system, but multiple-instance OpenVMS Galaxy environmentsare created by using console commands and console environment variables.
Once the Galaxy configuration model is displayed, users caneither interact with the active model or take the model off lineand define specific configurations for later use. The followingsections discuss these functions in greater detail.
HP OpenVMS Alpha Partitioning and Galaxy Guide
