Installation guide

Chapter 1. Red Hat Cluster Suite Overview 13

cluster service can start on any cluster node in the event no member of the failover domain

is available.)

In Figure 1-10, Failover Domain 1 is conﬁgured to restrict failover within that domain;

therefore, Cluster Service X can only fail over between Node A and Node B. Failover Do-

main 2 is also conﬁgured to restrict failover with its domain; additionally, it is conﬁgured

for failover priority. Failover Domain 2 priority is conﬁgured with Node C as priority 1,

Node B as priority 2, and Node D as priority 3. If Node C fails, Cluster Service Y fails over

to Node B next. If it cannot fail over to Node B, it tries failing over to Node D. Failover

Domain 3 is conﬁgured with no priority and no restrictions. If the node that Cluster Service

Z is running on fails, Cluster Service Z tries failing over to one of the nodes in Failover

Domain 3. However, if none of those nodes is available, Cluster Service Z can fail over to

any node in the cluster.

Figure 1-10. Failover Domains