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To Configure the Group Management Service
The Group Management Service (GMS) is an in-process service that provides cluster
monitoring, cluster membership, and group communication services. The GMS performs the following functions:


Notifies registered modules in a GlassFish Server instance when one or more member instances are added to or removed from a cluster, or are suspected or confirmed to have failed.


Provides the ability to send and receive messages between a group of processes.



In the navigation tree, expand the Configuration node.
Select the configuration for the cluster that you are changing.
Under the configuration's node, select the Group Management Service node.
The Group Management Service page opens.
In the Maximum Missed Heartbeats field, enter the maximum number of monitoring
attempts before the GMS confirms that a failure is suspected.
The default is 3.
In the Heartbeat Frequency field, enter the period of time between monitoring
attempts.
The default is 2000 milliseconds.
In the Group Discovery Timeout field, enter the amount of time that
the GMS waits for discovery of other cluster members.
The default is 5000 milliseconds.
In the Failure Verification Wait Time field, enter the amount of time
after which a suspected failure is marked as verified.
The default is 1500 milliseconds.
To restore default values, click the Load Defaults button.
(Optional) In the Additional Properties section, specify additional properties.
The GlassFish Server does not define any additional GMS properties.

To add a property, click the Add Property button. In the blank
row that appears, type the property name in the Name field, and
type the property value in the Value field.
To modify a property, edit that property's Value field.
To delete a property, select the checkbox to the left of the
Name field of the property that you are deleting, then click the
Delete Properties button.
Click Save.
See Also
To Enable the Group Management Service


To Configure Group Management Service Settings for a Cluster




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