Configuring flashboards for a server group
When a computer failure or AR System failure occurs, the active Flashboards server on that computer also shuts down. In this case, an associated AR System server detects the shutdown and activates a backup Flashboards server in the same group. When the computer becomes active, the AR System server reactivates the first Flashboards server and deactivates the backup server.
However, when a Flashboards server fails on a host on which a AR System server is still functioning correctly, the AR System server cannot detect the failure and cannot activate the backup server.
To monitor Flashboards 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 Flashboards server and a AR System server are part of the same group, they must be installed on the same computer.
Setting the port number for a Flashboards server in a server group
If the port number (RMIRegistryPort) for Flashboards administration in the Flashboards 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 Flashboards server during server group processing.