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syslog.conf(5)
syslog.conf(5) File Formats syslog.conf(5)
NAME
syslog.conf - configuration file for syslogd system log daemon
SYNOPSIS
/etc/syslog.conf
DESCRIPTION
The file /etc/syslog.conf contains information used by the system log
daemon, syslogd(8), to forward a system message to appropriate log
files and/or users. syslogd preprocesses this file through m4(1) to
obtain the correct information for certain log files, defining LOGHOST
if the address of loghost is the same as one of the addresses of the
host that is running syslogd.
A configuration entry is composed of two TAB-separated fields:
selector action
The selector field contains a semicolon-separated list of priority
specifications of the form:
facility.level [ ; facility.level ]
where facility is a system facility, or comma-separated list of facili‐
ties, and level is an indication of the severity of the condition being
logged. Recognized values for facility include:
user Messages generated by user processes. This is the default
priority for messages from programs or facilities not
listed in this file.
kern Messages generated by the kernel.
mail The mail system.
daemon System daemons.
auth The authorization system: login(1), su(8), getty(8), among
others.
lpr The line printer spooling system.
news Designated for the USENET network news system.
uucp Designated for the UUCP system; it does not currently use
the syslog mechanism.
cron Designated for cron/at messages generated by systems that
do logging through syslog. The current version of the
Solaris operating system does not use this facility for
logging.
audit Designated for audit messages generated by systems that
audit by means of syslog.
local0-7 Designated for local use.
mark For timestamp messages produced internally by syslogd.
* An asterisk indicates all facilities except for the mark
facility.
Recognized values for level are (in descending order of severity):
emerg For panic conditions that would normally be broadcast to all
users.
alert For conditions that should be corrected immediately, such as
a corrupted system database.
crit For warnings about critical conditions, such as hard device
errors.
err For other errors.
warning For warning messages.
notice For conditions that are not error conditions, but may
require special handling. A configuration entry with a level
value of notice must appear on a separate line.
info Informational messages.
debug For messages that are normally used only when debugging a
program.
none Do not send messages from the indicated facility to the
selected file. For example, a selector of
*.debug;mail.none
sends all messages except mail messages to the selected
file.
For a given facility and level, syslogd matches all messages for that
level and all higher levels. For example, an entry that specifies a
level of crit also logs messages at the alert and emerg levels.
The action field indicates where to forward the message. Values for
this field can have one of four forms:
o A filename, beginning with a leading slash, which indicates
that messages specified by the selector are to be written to
the specified file. The file is opened in append mode if it
exists. If the file does not exist, logging silently fails
for this action.
o The name of a remote host, prefixed with an @, as with:
@server, which indicates that messages specified by the
selector are to be forwarded to the syslogd on the named
host. The hostname loghost is treated, in the default sys‐
log.conf, as the hostname given to the machine that logs
syslogd messages. Every machine is loghost by default, per
the hosts database. It is also possible to specify one
machine on a network to be loghost by, literally, naming the
machine loghost. If the local machine is designated to be
loghost, then syslogd messages are written to the appropri‐
ate files. Otherwise, they are sent to the machine loghost
on the network.
o The name of a remote host, prefixed with an !, as with:
!server. This is rsyslog compatible forwarding, which indi‐
cates that messages specified by the selector are to be for‐
warded to rsyslogd on the named host. This option behaves
similarly to @. The only difference is that the forwarded
messages include current hostname.
o A comma-separated list of usernames, which indicates that
messages specified by the selector are to be written to the
named users if they are logged in.
o An asterisk, which indicates that messages specified by the
selector are to be written to all logged-in users.
Blank lines are ignored. Lines for which the first nonwhite character
is a '#' are treated as comments.
EXAMPLES
Example 1 A Sample Configuration File
With the following configuration file:
tab(); lw(2.75i) lw(2.75i) *.notice/var/log/notice
mail.info/var/log/notice *.crit/var/log/critical
kern,mark.debug/dev/console kern.err@server *.emerg* *.alertroot,opera‐
tor *.alert;auth.warning/var/log/auth
syslogd(8) logs all mail system messages except debug messages and all
notice (or higher) messages into a file named /var/log/notice. It logs
all critical messages into /var/log/critical, and all kernel messages
and 20-minute marks onto the system console.
Kernel messages of err (error) severity or higher are forwarded to the
machine named server. Emergency messages are forwarded to all users.
The users root and operator are informed of any alert messages. All
messages from the authorization system of warning level or higher are
logged in the file /var/log/auth.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Interface StabilityCommitted
SEE ALSO
at(1), crontab(1), logger(1), login(1), m4(1), syslog(3C), hosts(5),
attributes(7), cron(8), getty(8), su(8), syslogd(8)
Oracle Solaris 11.4 11 Dec 2020 syslog.conf(5)