Rotating Log
A list of log files maintained by rsyslogd can be found in the /etc/rsyslog.conf configuration file. Most log files are located in the /var/log/ directory. Some applications such as httpd and samba have a directory within /var/log/ for their log files.
You may notice multiple files in the /var/log/ directory with numbers after them (for example, cron-20100906). These numbers represent a time stamp that has been added to a rotated log file. Log files are rotated so their file sizes do not become too large. The logrotate package contains a cron task that automatically rotates log files according to the /etc/logrotate.conf configuration file and the configuration files in the /etc/logrotate.d/ directory.
you could see cron executaions
# cat /etc/cron
cron.d/ cron.daily/ cron.deny cron.hourly/ cron.monthly/ crontab cron.weekly/
# ls /etc/cron.daily/
logrotate man-db.cron mlocate prelink readahead.cron rhsmd
# cat /etc/cron.daily/logrotate
#!/bin/sh
/usr/sbin/logrotate -s /var/lib/logrotate/logrotate.status /etc/logrotate.conf
EXITVALUE=$?
if [ $EXITVALUE != 0 ]; then
/usr/bin/logger -t logrotate "ALERT exited abnormally with [$EXITVALUE]"
fi
exit 0
important link https://www.redhat.com/sysadmin/setting-logrotate
#vi /etc/logrotate.conf
//here the log rotate and compress and backlog period everything configured
-------------------------------------------
//include new log file on this rotation
//logrotate.conf file has been included /etc/logroate.d/ directory
//whatever the config written in /etc/lograte.d directory that would be taken cate of the rotate option
//hence i'm creating new log file config
//here I'm making a new log on the server, hence i put below config on rsyslog.con
#vi /etc/rsyslog.conf
#Newly created log that fetch all user SYSLOG
user.info /var/log/user.log
#vi /etc/logrotate.d/user
/var/log/user.log {
create 0666 root root
weekly
missingok
rotate 8
compress
notifempty
sharedscripts
dateext
postrotate
/bin/kill -HUP `cat /var/run/syslogd.pid 2> /dev/null` 2> /dev/null || true
endscript
}
//now validate this config or exute
#logrotate -s /var/log/logstatus /etc/logrotate.conf
//execute specific file
#logrotate -f /etc/logrotate.conf
//execute all the file under logroate.d
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