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Core group service settings


To set up the appserver properties that relate to core groups.

Servers | Server Types | Application servers | server | Additional Properties | Core group service

Click Save to save and synchronize the changes with all managed nodes.

Enable service at server startup

Select if we want the core group service, also known as the high availability manager service, to start on this process when the server starts. The core group service must be started before high availability functions, such as routing, and failover, work properly.

Avoid trouble: The default value for this setting is selected Before disabling the core group service for a server process, make sure that none of the components that this process uses require high availability functions.

Default Core group service starts when the server starts.

Core group name

Name of the core group that contains this appserver as a member. To move a server to a different core group, in the admin console, click...

Servers | Core groups | Core group settings | core_group | Core group servers

Data type String

Allow activation

Select if high availability group members can be activated on this application server.

Is alive timer

Time interval, in seconds, at which the high availability manager will check the health of all of the active high availability group members that are running in this appserver process. An active group member is a member that is able to accept work. If a group member fails, the appserver on which the group member resides is restarted. If -1 is specified, the timer is disabled. If 0 (zero) is specified, the default value of 120 seconds is used.

Avoid trouble: The value specified for this property can be overridden for the high availability groups using a particular policy if the Is alive timer property for that policy specifies a different time interval. If the Is alive timer setting specified for a policy is greater than 0 (zero), the high availability manager uses that time interval, instead of the one specified at this level, when determining how frequently it should check the health of a high availability group member using that particular policy.

Data type Any integer between -1 and 600, inclusive
Default 120 seconds

Transport buffer size

Buffer size, in megabytes, of the underlying group communication transport. The minimum buffer size is 10 megabytes.

Data type String
Default 10 megabytes





 

Related concepts


When to use a high availability manager

 

Related tasks


Manage appservers