10.4;glb_obj.txt (file specifying GLB object UUID), NCK version 1.5.1, 89/06/05
glb_obj.txt - file specifying the object UUID of the Global Location Broker
DESCRIPTION
The Global Location Broker (GLB) is an object identified by a Universal
Unique Identifier (UUID). This UUID has a default value. The
glb_obj.txt file allows you to override the default value by specifying a
different GLB object UUID for a particular host.
The glb_obj.txt file is used only in special configurations that require
several disjoint GLB databases (each of which is possibly replicated).
In most networks and internets, there is only one GLB database (possibly
replicated), and hosts do not need to have a glb_obj.txt file.
If a host has a glb_obj.txt file, the UUID in the file identifies the GLB
object to which that host will direct lookups and updates. If the host
runs a GLB daemon (glbd or nrglbd), the UUID also identifies the GLB
object managed by that daemon, and the daemon will accept lookups and
updates only for that object. By specifying different GLB object UUIDs
on different sets of hosts, you can partition a network or internet into
Location Broker "cells."
Location Broker cells have independent GLB databases. Each cell can be
serviced by one glbd, one nrglbd, or a set of glbd replicas. All hosts
in a cell use the same GLB object UUID. Cells need not correspond in any
way to physical or logical network topology.
Managing NCS Software describes how to set up a configuration that uses
location broker cells.
A glb_obj.txt file consists of one line containing the textual
representation of a UUID, such as is generated by the uuid_gen utility.
The contents of glb_obj.txt are identical on all hosts in a cell.
If a host does not have a glb_obj.txt file, it will use the default value
for the GLB object UUID.
EXAMPLE
The following is a sample glb_obj.txt file:
437f28e72000.0d.00.00.fb.40.00.00.00
SEE ALSO
glbd, uuid_gen
Managing NCS Software