Global-Cluster Node Names and Node IDs

The name of a node in a global cluster is the same name that you assign to the physical or virtual host when you install it with the Oracle Solaris OS. See the hosts(5) man page for information about naming requirements.

In single-host cluster installations, the default cluster name is the name of the node.

During Oracle Solaris Cluster configuration, you specify the names of all nodes that you are installing in the global cluster. The node name must be same as the output of the uname -n command.

A node ID number is assigned to each cluster node for intracluster use, beginning with the number 1. Node ID numbers are assigned to each cluster node in the order that the node becomes a cluster member. If you configure all cluster nodes in one operation, the node from which you run the scinstall utility is the last node assigned a node ID number. You cannot change a node ID number after it is assigned to a cluster node.

A node that becomes a cluster member is assigned the lowest available node ID number. If a node is removed from the cluster, its node ID becomes available for assignment to a new node. For example, if in a four-node cluster the node that is assigned node ID 3 is removed and a new node is added, the new node is assigned node ID 3, not node ID 5.

If you want the assigned node ID numbers to correspond to certain cluster nodes, configure the cluster nodes one node at a time in the order that you want the node ID numbers to be assigned. For example, to have the cluster software assign node ID 1 to phys-schost-1, configure that node as the sponsoring node of the cluster. If you next add phys-schost-2 to the cluster established by phys-schost-1, phys-schost-2 is assigned node ID 2.

For information about node names in a zone cluster, see Zone Clusters.