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Chapter 8
Monitoring Events and Managing System
Log Files
J-series Services Routers support configuring and monitoring of system log messages
(also called syslog messages). You can configure files to log system messages and
also assign attributes, such as severity levels, to messages. The View Events page on
the J-Web interface enables you to filter and view system log messages.
This chapter contains the following topics. For more information about system log
messages, see the JUNOS System Log Messages Reference.
If the router is operating in a Common Criteria environment, see the Secure
Configuration Guide for Common Criteria and JUNOS-FIPS.
■ System Log Message Terms on page 155
■ System Log Messages Overview on page 156
■ Before You Begin on page 159
■ Configuring System Log Messages with a Configuration Editor on page 160
■ Monitoring System Log Messages with the J-Web Event Viewer on page 162
System Log Message Terms
Before configuring and monitoring system log messages on Services Routers, become
familiar with the terms defined in Table 80 on page 155.
Table 80: System Log Message Terms
DefinitionTerm
Condition that occurs on a Services Router at a particular time. An event can include routine,
failure, error, emergency or critical conditions.
event
System log message code that uniquely identifies a system log message. The code begins with
a prefix indicating the software process or library that generates the event.
event ID
Group of messages that either are generated by the same software process (such as accounting
statistics) or concern a similar condition or activity (such as authentication attempts). For a list
of system logging facilities, see Table 81 on page 157.
facility
System Log Message Terms ■ 155