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Chapter 1 Messages and Output Destinations
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A message classification is assigned to a message, according to its level of urgency. Messages are
classified into the following three classifications, in the order of urgency: "ERROR", "WARNING",
"NOTICE", and "INFO".
Meanings of the messages are as follows:
ERROR: Error message
This message indicates an error that has a critical effect to the functions, and prompt recovery by an
administrator is required. An administrator must troubleshoot and recover the system promptly.
WARNING: Warning message
This message indicates an event that requires attention regarding the system operations, though the event
does not necessarily lead to the system down immediately. An administrator must remove the cause of
the event and take measures to operate the system normally.
NOTICE: Notifying message
This message notifies the state of internal processes. Although the event notified by the message does
not have any effect on the main functions of the system, an administrator must take appropriate measures
as necessary.
INFO: Information message
This message indicates operating information. No measures are required.
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