Juniper Networks J-Series Sending System Log Messages to a User Terminal, Archiving System Logs

Chapter 8: Monitoring Events and Managing System Log Files

Sending System Log Messages to a User Terminal

To direct system log messages to the terminal session of one or more specific users (or all users) when they are logged into the local Routing Engine, specify one or more JUNOS usernames. Separate multiple values with spaces, or use the asterisk (*) to indicate all users who are logged into the local Routing Engine. For the list of logging facilities and severity levels, see Table 81 on page 157 and Table 82 on page 158.

The procedure provided in this section sends any critical messages to the terminal of the sample user frank, if he is logged in.

To send messages to a user terminal:

1.Navigate to the top of the configuration hierarchy in either the J-Web or CLI configuration editor.

2.Perform the configuration tasks described in Table 85 on page 161.

3.If you are finished configuring the network, commit the configuration.

Table 85: Sending Messages to a User Terminal

Task	J-Web Configuration Editor		CLI Configuration Editor
Navigate to the Syslog level	1.	In the J-Web interface, select Configuration>View	From the [edit] hierarchy level,
in the configuration		and Edit>Edit Configuration.	enter
hierarchy.	2.	Next to System, click Configure or Edit.
			edit system syslog
	3.	Next to Syslog, click Configure or Edit.

Send all critical messages to the user frank.

1.Next to User, click Add new entry.

2.In the User name box, type frank.

3.Next to Contents, click Add new entry.

4.In the Facility list, select any.

5.In the Level list, select critical.

Set the filename and the facility and severity level:

set user frank any critical

Archiving System Logs

By default, the JUNOS logging utility stops writing messages to a log file when the file reaches 128 KB in size. It closes the file and adds a numerical suffix, then opens and directs messages to a new file with the original name. By default, the logging utility creates up to 10 files before it begins overwriting the contents of the oldest file. The logging utility by default also limits the users who can read log files to the root user and users who have the JUNOS maintenance permission.

To enable all users to read log files, include the world-readablestatement at the [edit system syslog archive] hierarchy level. To restore the default permissions, include the no-world-readablestatement. You can include the archive statement at the [edit system syslog file filename] hierarchy level to configure the number of files, file size,

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