Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Mail Systems
Eclipse Documentation

How To Guides
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Problem Solutions
Privacy Policy




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.

4.4. Modifying the Cluster Configuration

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.

Important Important

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.

Important 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 default Quorum Votes value of "1". For more information about using the Cluster Configuration Tool, refer to Chapter 3 Cluster Configuration.

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:

  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 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 Cluster Configuration.

  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 propagated to the cluster members.

  Published under the terms of the GNU General Public License Design by Interspire