name

none 

Specifies the name of the cluster. 

config-ref

default config element’s name attribute value, server-config

References the configuration used by the cluster. 

heartbeat-port

none; value automatically generated 

Specifies the communication port the Group Management Service uses to listen for group events. Must be a valid port number. 

heartbeat-address

none; value automatically generated 

Specifies the address the Group Management Service uses to listen for group events. Must be a multicast address. 

heartbeat-enabled

false (developer profile)

true (cluster and enterprise profiles)

(optional) If true, the Group Management Service is started as a lifecycle module in each server instance in the cluster and in the Domain Administration Server. The Domain Administration Server participates in each cluster that has this attribute set to true.