The Galaxy Configuration Utility (GCU) is a DECwindows Motif
application that allows system managers to configure and manage
an OpenVMS Galaxy system from a single workstation window.
Using
the 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 current
hardware platform.
The GCU resides in the SYS$SYSTEM directory along with a small
number of files containing configuration information.
The GCU consists of the following files:
File
Description
SYS$SYSTEM:GCU.EXE
GCU executable image
SYS$MANAGER:GCU.DAT
Optional DECwindows resource
file
SYS$MANAGER:GALAXY.GCR
Galaxy Configuration Ruleset
SYS$MANAGER:GCU$ACTIONS.COM
System management procedures
SYS$MANAGER:xxx.GCM
User-defined configuration
models
SYS$HELP:GALAXY_GUIDE.DECW$BOOK
Online help in Bookreader form
The GCU can be run from any Galaxy instance. If the system
does not directly support graphics output, then the DECwindows display
can be set to an external workstation or suitably configured PC.
However, the GCU application itself must always run on the Galaxy
system.
When the GCU is started, it loads any customizations found
in its resource file (GCU.DAT); then it loads the Galaxy Configuration
Ruleset (GALAXY.GCR). The ruleset file contains statements that
determine the way the GCU displays the various system components,
and includes rules that govern the ways in which users can interact
with the configuration display. Users do not typically alter the
ruleset file unless they are well versed in its structure or are
directed to do so by an HP Services engineer.
After the GCU display becomes visible, the GCU determines
whether the system is currently configured as an OpenVMS Galaxy
or as a single-instance Galaxy on a non-Galaxy platform. If the
system is configured as a Galaxy, the GCU displays the active Galaxy
configuration model. The main observation window displays a hierarchical
view of the Galaxy. If the system has not yet been configured as
a Galaxy, the GCU prompts you as to whether or not to create a single-instance
Galaxy. Note that the GCU can create a single-instance Galaxy on
any Alpha system, but multiple-instance OpenVMS Galaxy environments
are created by using console commands and console environment variables.
Once the Galaxy configuration model is displayed, users can
either interact with the active model or take the model off line
and define specific configurations for later use. The following
sections discuss these functions in greater detail.