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3.4. Adding and Deleting Members

The procedure to add a member to a cluster varies slightly, depending on whether the cluster is already running or is a newly-configured cluster.

3.4.1. Adding a Member to a New Cluster

To add a member to a new cluster, follow these steps:

Figure 3-6. Adding a Member to a New Cluster

  1. Click the Cluster Node property and click the Add a Cluster Node button. It prompts for a member name.

  2. Enter the name or address of a system on the cluster subnet. Note that each member must be on the same subnet as the system on which you are running the Cluster Configuration Tool and must be defined either in DNS or in each cluster system's /etc/hosts file

    The system on which you are running the Cluster Configuration Tool must be explicitly added as a cluster member; the system is not automatically added to the cluster configuration as a result of running the Cluster Configuration Tool.

  3. Enter the Quorum Votes needed for the node to run in and join the cluster. If you leave the field blank, the node is assigned one quorum vote by default.

  4. Click OK.

  5. Choose File => Save to save the changes to the cluster configuration.

3.4.2. Deleting a Member from a Cluster

To delete a member from an existing cluster that is currently in operation, follow these steps:

  1. Ensure that the cluster service is not running on the member to be deleted. Invoke the service cman stop command to stop the cluster cluster.

  2. On one of the running members, invoke the Cluster Configuration Tool to delete the new member, as follows:

    1. If necessary, click the triangle icon to expand the Cluster Nodes property.

    2. Select the cluster node to be deleted and click the Delete Node button.

    3. Click Yes to confirm deletion.

    Figure 3-7. Deleting a Member

  3. Choose File => Save to save the changes to the cluster configuration. The cluster node fence device assignment is removed, and the node is removed from the cluster as well as any failover domain memberships.

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