Red Hat GFS 6.0 -, Administrator'S Manual

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Appendix A.
Using Red Hat GFS with Red Hat Cluster Suite
This appendix provides information about considerations to take when running Red Hat GFS 6.0 with
Red Hat Cluster Suite and consists of the following sections:
•
Section A.1 Terminology
•
Section A.2 Changes to Red Hat Cluster
•
Section A.3 Installation Scenarios
A.1. Terminology
You may have encountered new terms associated with Red Hat Cluster Suite. The following list pro-
vides a brief description of terms used with Red Hat GFS and Red Hat Cluster Suite:
GFS Setup Druid
This application is a Red Hat Cluster GUI for initial configuration of Red Hat GFS. The GUI is
launched separately from the Red Hat Cluster GUI, the Cluster Configuration Tool . The GFS
Setup Druid uses
/etc/cluster.xml
as input. If
/etc/cluster.xml
does not exist, the
GFS Setup Druid displays a message and exits.
Note
You must run the Cluster Configuration Tool before running the GFS Setup Druid ; the Cluster
Configuration Tool creates
/etc/cluster.xml
.
To run the GFS Setup Druid , enter the following at the command line:
#
redhat-config-gfscluster
gulm-bridge
This is a fence method available for Red Hat Cluster nodes, if and only if the Red Hat GFS RPM
is installed on the node that the Cluster Configuration Tool runs on. The gulm-bridge fence
method has been added to Red Hat Cluster Suite specifically for the Red Hat Enterprise Linux
Update 3 release. Using this fence method on a Red Hat Cluster Manager member prevents it
from being fenced twice.
Red Hat Cluster
Red Hat Cluster Manager is part of the Red Hat Cluster Suite. It provides cluster administration
functionality for Red Hat Enterprise Linux Red Hat Cluster Manager contains two major
components:
•
Red Hat Cluster Manager — The underlying software (non-GUI) that performs Red Hat
Cluster administrations services.
•
Cluster Configuration Tool — This component is the graphical user interface (GUI) for Red
Hat Cluster Manager. The GUI provides a configuration interface and a status monitor for
members and services in a Red Hat Cluster Manager system. The Cluster Configuration
Tool accepts configuration data from a user and writes it to the
/etc/cluster.xml
file. The
Red Hat Cluster Manager reads the configuration data from the
/etc/cluster.xml
file.
3
3.