Default System Log Settings

Table 4 summarizes the default system log settings that apply to all platforms that run the Junos OS, and specifies which statement to include in the configuration to override the default value.

[edit system syslog]
host hostname {
   facility-override facility;
}

[edit system syslog]
file filename {
	structured-data;
}

[edit system syslog]
archive {
	files number;
}
file filename {
	archive {
		files number ;
	}
}

[edit system syslog]
archive {
	size size;
	}
file filename {
	archive {
		size size;
	}
}

[edit system syslog]
time-format format;

[edit system syslog]
archive {
	world-readable;
}
file filename {
	archive {
		world-readable;
	}
}

In addition, the following messages are generated by default on specific platforms. To view either type of message, you must configure at least one destination for messages as described in Minimum System Logging Configuration.

• On J Series platforms, a message is logged when a process running in the kernel consumes 500 or more consecutive milliseconds of CPU time.

  To log the message on an M Series, MX Series, or T Series platform, include the kernel info statement at the appropriate hierarchy level:

  [edit system syslog]
  (console | file filename | host destination | user username) {
  	kernel info;
  }

• The master Routing Engine on each T640 routing node in a routing matrix forwards to the master Routing Engine on the TX Matrix platform all messages with a severity of info and higher. This is equivalent to the following configuration statement included on the TX Matrix platform:

  [edit system syslog]
  host scc-master {
  	any info;
  }