Red Hat GFS 6.0 -, Руководство администратора

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132 Appendix A. Using Red Hat GFS with Red Hat Cluster Suite
Also, the Cluster Configuration Tool wraps several command line calls into the Red Hat
Cluster Manager , such as starting and stopping services.
A.2. Changes to Red Hat Cluster
The following changes to Red Hat Cluster enable running it with Red Hat GFS in
•
The Cluster Configuration Tool has been changed. After entering members in the configuration
section of the application, if a member is highlighted, and you click Add Child , a dialog box
is displayed, offering fence method options. You can select a fence method by clicking a radio
button next to the fence method in the dialog box. Earlier Red Hat Cluster releases provided only
two fence method options (under Power Controller Type ): Serial and Network . For Red Hat
Enterprise Linux Update 3, if Red Hat GFS is installed on the node, then a third fence-method
option, GULM-STONITH (the gulm-bridge fence method), is available.
•
The Red Hat Cluster Manager now provides support for GULM-STONITH , the gulm-bridge
fence method.
•
A druid application, the GFS Setup Druid , provides for configuring an initial instance of Red
Hat GFS by writing the three Red Hat GFS configuration files:
cluster.ccs
,
nodes.ccs
, and
fence.ccs
. The GFS Setup Druid requires an
/etc/cluster.xml
file when started.
A.3. Installation Scenarios
When running Red Hat GFS with Red Hat Cluster Manager, you must take into account certain con-
siderations, according to the following circumstances:
•
New installations of Red Hat GFS and Red Hat Cluster Manager
•
Adding Red Hat GFS to an existing Red Hat Cluster Manager deployment
•
Upgrading Red Hat GFS 5.2.1 to Red Hat GFS 6.0
A.3.1. New Installations of Red Hat GFS and Red Hat Cluster Manager
When installing Red Hat GFS and Red Hat Cluster Manager for the first time into a cluster, install
and configure Red Hat Cluster Suite before installing and configuring Red Hat GFS. With the Cluster
Configuration Tool , you can configure up to 16 nodes — the maximum number of nodes allowed in
Red Hat Cluster Manager system.
You can add services and failover domains (and other functions) after initially configuring Red Hat
GFS with the GFS Setup Druid .
Note
The only configuration items in Red Hat Cluster that Red Hat GFS or the GFS Setup Druid depend
on are setting up Red Hat Cluster Manager members and specifying fence devices.
RHEL3-U3
3