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Using the Integration Capabilities of the VPO Motif-based GUI
Event Integration Through Messages
Chapter 3104
The monitor agent checks the received values against the configured
thresholds and creates user-defined messages for any exceeded threshold
values. This happens for the values of all types of objects (program,
external or SNMP MIB) that arrive at the monitor agent. If the monitor
agent receives a value of an object which was not configured, it will
generate an opcerror log entry with an appropriate warning on the
managed node. For example:
File is: /var/opt/OV/log/OpC/<managed_node>/opcerror
VPO message: OpC30-613
08/05/00 10:39 WARNING Monitor Agent(10827):
Can’t find object ‘<Monitored Object>’.
Unknown monitor ’<Monitored Object>’.
Ignoring received value.
If a monitored object should be checked by a user-provided script invoked
by the monitor agent, and a corresponding name-value pair is not
returned, (that is, the script/program does not call opcmon) the monitor
agent will generate a warning message and send it to the management
server. For example, the message OpC30-608:
Can’t retrieve value for monitor <Monitored Object>.
Suppressing further error messages.