When specifying the destination for system log messages, you
can specify the class (facility) of messages to log and the minimum
severity level (level) of the message for each location.
Each system log message belongs to a facility, which is a group
of messages that are either generated by the same software process
or concern a similar condition or activity.
Table 162 lists the system
logging facilities, and Table 163 lists the system logging severity levels. For more information about
system log messages, see the JUNOS System Log Messages Reference.
Table 162: System
Logging Facilities
Facility
Description
any
Any facility
authorization
Any authorization attempt
change-log
Any change to the configuration
cron
Cron scheduling process
daemon
Various system processes
interactive-commands
Commands executed in the CLI
kernel
Messages generated by the JUNOS kernel
user
Messages from random user processes
Table 163: System Logging
Severity Levels
Severity Level (from Highest to Lowest Severity)
Description
emergency
System panic or other conditions that cause the routing platform
to stop functioning.
alert
Conditions that must be corrected immediately, such as a corrupted
system database.
critical
Critical conditions, such as hard drive errors.
error
Standard error conditions that generally have less serious consequences
than errors in the emergency, alert, and critical levels.
warning
Conditions that warrant monitoring.
notice
Conditions that are not error conditions but are of interest
or might warrant special handling.
