Updating The Cluster Software; Changing The Cluster Name; Disabling The Cluster Software - Red Hat CLUSTER SUITE - CONFIGURING AND MANAGING A CLUSTER 2006 Manual

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Note
The Cluster Configuration Tool does not display the Send to Cluster button if the
cluster is new and has not been started yet, or if the node from which you are run-
ning the Cluster Configuration Tool is not a member of the cluster. If the Send to
Cluster button is not displayed, you can still use the Cluster Configuration Tool;
however, you cannot propagate the configuration. You can still save the configu-
ration file. For information about using the Cluster Configuration Tool for a new
cluster configuration, refer to Chapter 3 Installing and Configuring Red Hat Cluster
Suite Software.
10. Clicking Send to Cluster causes a Warning dialog box to be displayed. Click Yes
to propagate the configuration.
11. Click the Cluster Management tab and verify that the changes have been propa-
gated to the cluster members.

4.6. Updating the Cluster Software

For information about updating the cluster software, contact an authorized Red Hat support
representative.

4.7. Changing the Cluster Name

Although the Cluster Configuration Tool provides a Cluster Properties dialog box with
a cluster Name parameter, the parameter is intended only for use during initial cluster
configuration. The only way to change the name of a Red Hat cluster is to create a new
cluster with the new name. For more information about using the Cluster Configuration
Tool, refer to Chapter 3 Installing and Configuring Red Hat Cluster Suite Software.

4.8. Disabling the Cluster Software

It may become necessary to temporarily disable the cluster software on a cluster mem-
ber. For example, if a cluster member experiences a hardware failure, you may want to
reboot that member, but prevent it from rejoining the cluster to perform maintenance on
the system.
Use the
/sbin/chkconfig
up as follows:
chkconfig --level 2345 rgmanager off
chkconfig --level 2345 gfs off
chkconfig --level 2345 clvmd off
chkconfig --level 2345 fenced off
command to stop the member from joining the cluster at boot-
Chapter 4. Cluster Administration