Changes to Red Hat Cluster

Red Hat Cluster Suite: Configuring and Managing a Cluster
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# B.2. Changes to Red Hat Cluster

The following changes to Red Hat Cluster enable running it with Red Hat GFS in RHEL-U3:

- The Cluster Configuration Tool has been changed. After entering members in the configuration section of the application, if a member is highlighted, and you click Add Child, a dialog box is displayed, offering fence method options. You can select a fence method by clicking a radio button next to the fence method in the dialog box. Earlier Red Hat Cluster releases provided only two fence method options (under Power Controller Type): Serial and Network. For Red Hat Enterprise Linux 3 Update 3, if Red Hat GFS is installed on the node, then a third fence-method option, GULM-STONITH (the gulm-bridge fence method), is available.

- The Red Hat Cluster Manager now provides support for GULM-STONITH, the gulm-bridge fence method.

- A druid application, the GFS Setup Druid, provides for configuring an initial instance of Red Hat GFS by writing the three Red Hat GFS configuration files: `cluster.ccs`, `nodes.ccs`, and `fence.ccs`. The GFS Setup Druid requires an `/etc/cluster.xml` file when started.

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