HP SVA V2.1 System Administration Guide

1.2.1 Site Configuration File
The Site Configuration File is created by HP when setting up the cluster initially. A
post-installation discovery process, the svaconfigure utility, identifies all the nodes in the
cluster, characterizes them by role, and defines all Display Surfaces by assuming each display
node maps to a single Display Surface. This creates a set of Display Surfaces, each with a single
tile, defined by a display node and the display device physically connected it.
Only root users can change the Site Configuration File.
See Section 2.3 for information on how to create new Display Surfaces in the Site Configuration
File for your cluster environment, including multi-tile Display Surfaces.
TIP: The Site Configuration File is called /hptc_cluster/sva/etc/sva.conf. Once this
Site Configuration File is created, you can customize it to your site needs. However, if new hosts
are added or the configuration is changed, running the svaconfigure Utility again rewrites
the Site Configuration File and changes are lost. Use INCLUDE statements to retain site-specific
changes. See Section 1.1.2.5 for details on using the INCLUDE statement.
To change the Site Configuration File, you can use a text editor. You also have the option to
execute svaputdata commands directly from the command line, or create a script that contains
svagetdata and. svaputdata commands, if you have more repetitive changes. You can write
any section and tag value. The data is always written to the Site Configuration File, replacing
any previous value. See the SVA Visualization System Software Reference Guide for details on the
syntax of these commands.
If you physically add or remove nodes from the cluster, you must rerun the cluster discovery
process using the svaconfigure utility. This is a system administrator or HP Field Service task
that requires root privileges.
Before you use the svaconfigure utility, make sure no jobs are running on the cluster.
Run the following command from the head node to begin the discovery process:
% svaconfigure
The SVA Visualization System Software Guide documents the full syntax for the svaconfigure
command. Online Help is available when you run the command with the –Help option. There
is also a manpage available for the command.
1.2.2 User Configuration File
By editing the User Configuration File, any user can override some of the job preferences specified
in the Site Configuration File. Some of the tags in the Site Configuration File are unique to that
file and cannot be overridden by the User Configuration File.
For example, you can set the Display Surface value as follows:
SVA_DISPLAY_SURFACE="my_test_display"
This sets your submitted visualization jobs to use the my_test_display Display Surface, unless
you use the command line to override the value.
Similarly, you can specify the Execution Host in the User Configuration File. This overrides the
default values specified in the Site Configuration File because of the precedence described in
Section 1.1.3.
1.2.3 Job Settings File
Before any get or put command is executed, you must have your environment variables correctly
set with svainit. Refer to the SVA Visualization System Software Guide for details on its use.
24 Managing Configuration Data Files