Sun GlassFish Enterprise Server 2.1 Administration Reference

G

group-management-service

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

The GMS is built atop a configurable stack of group membership discovery and health monitoring protocols. These protocols have properties that can be changed for a given network and deployment topology. Protocols in the GMS are as follows:


Note –

Some topics in the documentation pertain to features that are available only in domains that are configured to support clusters. Examples of domains that support clusters are domains that are created with the cluster profile or the enterprise profile. For information about profiles, see Usage Profiles in Sun GlassFish Enterprise Server 2.1 Administration Guide.


Superelements

config

Subelements

The following table describes subelements for the group-management-service element.

Table 1–65 group-management-service Subelements

Element 

Required 

Description 

property

zero or more 

Specifies a property or a variable. 

Attributes

The following table describes attributes for the group-management-service element.

Table 1–66 group-management-service Attributes

Attribute 

Default 

Description 

failure-detection-max-tries

3

(optional) Specifies the maximum number of monitoring attempts before the GMS confirms that a failure is suspected in the group. 

failure-detection-timeout-in-millis

2000

(optional) Specifies the time between monitoring attempts. 

discovery-timeout-in-millis

2000

(optional) Specifies the time that the GMS waits for discovery of other members in the group. 

verify-failure-timeout-in-millis

1500

(optional) Specifies the timeout after which a suspected failure is marked as verified.