Syslog Logging Levels
Syslog logging levels, also known as severity levels,
indicate the importance or urgency of log messages. They range from 0 to 7,
with 0 being the most severe and 7 being the most minor severe:
0: Emergency, the system is unusable
1: Alert, action must be taken immediately
2: Critical, critical conditions
3: Error (error): error conditions
4: Warning (warn): warning conditions
5: Notice (notice): normal but significant conditions
6: Informational (info): informational messages
7: Debug (debug): messages helpful for debugging
Log levels help prioritize responses and actions. For
example, alert and emergency messages are used when something wrong occurs,
while critical, error, and warning messages are used for important events.
Syslog is a centralized logging system that collects
messages from various devices and applications. It's used for monitoring,
troubleshooting, and security analysis.
Regular logging is set to 0 through 4 and is forwarded; events for levels 5 through 7 are not forwarded.
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