Adding A Failover Domain - Red Hat Cluster for Enterprise Linux 5 Configuration

• Ordered — Allows you to specify a preference order among the members of a failover do-
main. The member at the top of the list is the most preferred, followed by the second mem-
ber in the list, and so on.
Note
Changing a failover domain configuration has no effect on currently running ser-
vices.
Note
Failover domains are not required for operation.
By default, failover domains are unrestricted and unordered.
In a cluster with several members, using a restricted failover domain can minimize the work to
set up the cluster to run a cluster service (such as
figuration identically on all members that run the cluster service). Instead of setting up the entire
cluster to run the cluster service, you must set up only the members in the restricted failover do-
main that you associate with the cluster service.
Tip
To configure a preferred member, you can create an unrestricted failover domain
comprising only one cluster member. Doing that causes a cluster service to run on
that cluster member primarily (the preferred member), but allows the cluster ser-
vice to fail over to any of the other members.
The following sections describe adding a failover domain, removing a failover domain, and re-
moving members from a failover domain:
• Section 6.1, "Adding a Failover Domain"
• Section 6.2, "Removing a Failover Domain"
• Section 6.3, "Removing a Member from a Failover Domain"

6.1. Adding a Failover Domain

To add a failover domain, follow these steps:
1. At the left frame of the the Cluster Configuration Tool, click Failover Domains.
6.1. Adding a Failover Domain
), which requires you to set up the con-
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