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NOTE: CentOS Enterprise Linux is built from the Red Hat Enterprise Linux source code. Other than logo and name changes CentOS Enterprise Linux is compatible with the equivalent Red Hat version. This document applies equally to both Red Hat and CentOS Enterprise Linux.
To modify the cluster configuration, use the Cluster Configuration Tool to edit the cluster
configuration file (/etc/cluster/cluster.conf). For more information
about using the Cluster Configuration
Tool, refer to Chapter 3 Cluster
Configuration.
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Important |
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Use only the Cluster Configuration
Tool to modify the cluster configuration. Do not directly edit the /etc/cluster/cluster.conf file with a text
editor.
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Important |
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Although the Cluster Configuration
Tool provides a Quorum Votes parameter
in the Properties dialog box of each
cluster member, that parameter is intended only for use during initial cluster configuration.
Furthermore, it is recommended that you retain the default
Quorum Votes value of "1". For more
information about using the Cluster
Configuration Tool, refer to Chapter
3 Cluster Configuration.
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To edit the cluster configuration file, click the Cluster Configuration tab in the cluster
configuration GUI. Clicking the Cluster
Configuration tab displays a graphical representation of the
cluster configuration. Change the configuration file according the
the following steps:
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Make changes to cluster elements (for example, create a
service).
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Propagate the updated configuration file throughout the cluster
by clicking Send to Cluster.
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Note |
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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 running 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 configuration file. For
information about using the Cluster
Configuration Tool for a new cluster configuration, refer to
Chapter 3 Cluster
Configuration.
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Clicking Send to Cluster causes a
Warning dialog box to be displayed. Click
Yes to save and propagate the
configuration.
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Clicking Yes causes an Information dialog box to be displayed, confirming
that the current configuration has been propagated to the cluster.
Click OK.
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Click the Cluster Management tab and
verify that the changes have been propagated to the cluster
members.
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