The local configuration file, target.conf, contains
the cluster ID, attributes, and election roles for each node in the cluster.
For example, the target.conf file will specify whether
the node is a master-eligible node. The target.conf file
is located on each node on the cluster and contains a description of the
node on which it is located.
The following is an example of a target.conf file:
domain_id: 128 # Cluster ID
attributes: - # Local nodes attributes
election: 5 # Election round number
role: MASTER # Role
For an explanation of the fields in the example, see the cluster_nodes_table(4)
man page.