A node is a logical unit that makes up CUBRID HA. It can become one of the following nodes according to its status: master node, slave node, or replica node.
The CUBRID HA group consists of the nodes described above. You can configure the members of this group by using the ha_node_list and ha_replica_list in the cubrid.conf file. Nodes in a group have the same information. They exchange status checking messages periodically and a failover will occurs when the master node fails.
A node includes the master process (cub_master), the database server process (cub_server), the replication log copy process (copylogdb), the replication log reflection process (applylogdb), etc.