Administrator's Guide

Cluster File System Administration
Cluster Messaging - GAB
Chapter 3
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Cluster Messaging - GAB
GAB provides membership and messaging services for clusters and for groups of
applications running on a cluster. The GAB membership service provides orderly startup
and shutdown of clusters.
GAB is automatically configured initially when Serviceguard is installed, and GAB is
also automatically configured each time the CFS package is started.
For more information, see the gabconfig(1m) manual page.