NetApp
System Manager : Understanding System Manager : System logging
System logging
System logging is an essential tool for application troubleshooting. In case of problems with an application, it is helpful to enable system logging so that the problem can be located. You can enable System Manager logging at runtime without modifying the application binary.
Log output can be so voluminous that it quickly becomes overwhelming. System Manager enables you to refine the logging output by selecting which type of log statements are output. By default, system logging is set to INFO. You can choose one of the following log levels:
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DEBUG
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INFO
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WARN
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ERROR
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FATAL
These levels function hierarchically, so that a log level set to "WARN" logs any WARN, ERROR, or FATAL log events.