Installation guide

72 Chapter 4. Cluster Administration
Warning
Do not manually edit the contents of the /etc/cluster/cluster.conf file without guid-
ance from an authorized Red Hat representative or unless you fully understand the con-
sequences of editing the /etc/cluster/cluster.conf file manually.
Important
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 de-
fault Quorum Votes value of 1. For more information about using the Cluster Configura-
tion Tool, refer to Chapter 3 Installing and Configuring Red Hat Cluster Suite Software.
To edit the cluster configuration file, click the Cluster Configuration tab in the cluster
configuration GUI. Clicking the Cluster Configuration tab displays a graphical represen-
tation of the cluster configuration. Change the configuration file according the the follow-
ing steps:
1. Make changes to cluster elements (for example, create a service).
2. Propagate the updated configuration file throughout the cluster by clicking Send to
Cluster.
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 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 Installing and Configuring Red Hat Cluster Suite Software.
3. Clicking Send to Cluster causes a Warning dialog box to be displayed. Click Yes
to save and propagate the configuration.
4. Clicking Yes causes an Information dialog box to be displayed, confirming that the
current configuration has been propagated to the cluster. Click OK.
5. Click the Cluster Management tab and verify that the changes have been propa-
gated to the cluster members.