Configuring flashboards for a server group
When a computer failure or failure occurs, the active server on that computer also shuts down. In this case, an associated detects the shutdown and activates a backup server in the same group. When the computer becomes active, the reactivates the first server and deactivates the backup server.
However, when a server fails on a host on which a is still functioning correctly, the cannot detect the failure and cannot activate the backup server.
To monitor servers for server failure
Use the following command: java -jar FlashboardAgent.jar ping -h <serverHostName>
This command returns a 0 to standard out when the server is functioning correctly, and returns a -1 to standard out if the server fails.
If a server and a are part of the same group, they must be installed on the same computer.
Setting the port number for a server in a server group
If the port number (RMIRegistryPort) for administration in the server is changed from the default (1150), set the port number in the AR System Administration: AR System Configuration Generic UI form to the same port number.
The syntax is as follows: Server-Group-Flashboards-Admin-Port: 2021
See Updating-configuration-settings-by-using-the-AR-System-Configuration-Generic-UI-form.
This enables the server to communicate flashboards administration information to the server during server group processing.