4
: log-
( ) . , .
( ) /var/log/.
, .
- /var/log/messages . , .
- /var/log/dmesg , , .
- /var/log/secure . . , , .
- /var/log/audit/audit.log SELinux .
- /var/log/yum.log yum.
- /var/log/boot.log .
- /var/log/httpd/ - ..
, .
# tail /var/log/messages
10 . , -n <>.
, -f:
# tail -f /var/log/messages
, . Ctrl+C.
, - , , . head, , tail.
, , . /dev/log, 514/udp /
Syslog
syslog.conf (rsyslog.conf) /etc/ , .
, . . , , , .
syslog.conf
CentOS 5.3
, syslogd . , , , ( ).
|
|
, , , .
* ( ), none ( ),! (), = ( ).
:
authpriv.* /var/log/secure
authpriv.error (), /var/log/secure.
emerg | (PANIC) | |
alert | , | |
crit | ||
err | (ERROR) | |
warning | (WARN) | |
notice | ||
info | ||
debug | () |
, :
kern | ||
user | ||
daemon | ||
auth | , | |
syslog | ||
lpr | ||
news | . | |
uucp | . Unix-to-Unix Copy Protocol. | |
cron | cron | |
authpriv | auth, | |
ftp | FTP- | |
ntp | ||
13,14 | log audit, alert | |
clock daemon | ||
16-23 | local0-local7 | . local7, , . |
, .
- -. , . , .
- , | .
- /dev/console.
- , @ - .
syslog-ng (next generation), .
, , . logrotate, , , .
/etc/logrotate.conf
:
# man logrotate
. , - .