1.4. Severity levels

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An event has a default severity level, based on how serious the event is. The following eight severity levels are possible, as defined by the Syslog protocol:

0 - Emergency: Emergency conditions, which most likely led to the system being unusable.
1 - Alert: Alert conditions, which affected the functionality of the unit. Needs attention immediately.
2 - Critical: Critical conditions, which affected the functionality of the unit. Action should be taken as soon as possible.
3 - Error: Error conditions, which probably affected the functionality of the unit.
4 - Warning: Warning conditions, which could affect the functionality of the unit.
5 - Notice: Normal, but significant, conditions.
6 - Informational: Informational conditions.
7 - Debug: Debug level events.

Priority in Syslog Messages

In Syslog messages the priority is indicated by the parameter prio=nn.

Excluding Logged Messages

cOS Core allows the exclusion from logging of entire catageories of log messages or just specific log messages. It is also possible to change the severity level of log messages so that a specific category or a specific message has the severity reset to a particular level when it is sent by cOS Core. These features are documented further in the cOS Core Administrators Guide.