2.9.1 Overview of monitoring a cluster by sending heartbeats

The EADS servers in a cluster mutually send a heartbeat at a predefined interval (the default is every 0.4 seconds).

In a cluster, the EADS servers check the cluster status by comparing the cluster information managed by individual EADS servers with the multicast heartbeats.

The cluster information provides information about that EADS servers' state of life or death within the cluster.