logrotate with /etc/logrotate.conf file

skmdu · #1 (**permalink**) 10-16-2009

Hi there,

I want to rotate the logfiles which are located in /var/log/jboss/tomcat*

so I have created a file named as 'tomat' in /etc/logrotate.d/tomcat with the following content.

Code:

# cat /etc/logrotate.d/tomcat
/var/log/jboss/tomcat_access_log*.log {
        daily
        nocreate
        rotate 1
        compress
        missingok
        postrotate
                find /var/log/jboss/ -iname 'tomcat_access_log*.gz' -type f -mtime +4 -exec rm -f \{\} \;
        endscript
}

As of now, /var/log/jboss has two tomcat access log files.

Code:

$ls -l /var/log/jboss
-rw-r--r-- 1 root root 46546 Oct 14 10:22 tomcat_access_log.2009-10-14.log
-rw-r--r-- 1 root root 46546 Oct 15 14:10 tomcat_access_log.2009-10-15.log

Content of default logrotate configuration file /etc/logrotate.conf

Code:

# cat /etc/logrotate.conf
# Let's do daily rotations on this system.
daily
rotate 30
create
compress
include /etc/logrotate.d
/var/log/wtmp {
        monthly
        create 0664 root utmp
        rotate 1
}

Executed the following command :

Code:

$ /usr/sbin/logrotate -v /etc/logrotate.conf
rotating pattern: /var/log/jboss/tomcat_access_log*.log  after 1 days (1 rotations)
empty log files are rotated, old logs are removed
considering log /var/log/jboss/tomcat_access_log.2009-10-14.log
  log does not need rotating
considering log /var/log/jboss/tomcat_access_log.2009-10-15.log
  log does not need rotating
not running postrotate script, since no logs were rotated
not running postrotate script, since no logs were rotated

If you see the above logs, it doesnt rotate any log files...

Code:

$ls -l /var/log/jboss
-rw-r--r-- 1 root root 46546 Oct 14 10:22 tomcat_access_log.2009-10-14.log
-rw-r--r-- 1 root root 46546 Oct 15 14:10 tomcat_access_log.2009-10-15.log

When execute the same command with -f (force) option it is rotating and compressing the file..

My Doubt is :

I have logrotate to execute in the cron.daily.

Code:

# cat /etc/cron.daily/logrotate
#!/bin/sh

/usr/sbin/logrotate /etc/logrotate.conf
EXITVALUE=$?
if [ $EXITVALUE != 0 ]; then
    /usr/bin/logger -t logrotate "ALERT exited abnormally with [$EXITVALUE]"
fi
exit 0
chmod a+r /var/log/messages

I could able to see from the cron logs cron.daily was executed. But when I saw /var/log/jboss directory log files are there with out compressing and rotating.. But when I execute manually using -f option its rotation.

How to resolve this issue ? Any help is appreciated.

TonyFullerMalv · #2 (**permalink**) 10-16-2009

I'd try increasing the:
rotate 1
to a larger number?
I know 1 means "1 extra" log file but I have never seen such a low number used.

pludi · #3 (**permalink**) 10-17-2009

The "problem" is that logrotate doesn't immediately switch any logs, but only after the rotation time for a file (in your case 1 day) has passed since it was first seen. So if you have 2 files, for the 14th and 15th of the month, and logrotate first sees them on the 16th of the month, they'll normally get rotated on the 17th.

With applications separating their logs by themselves, it's probably easier to work with find, eg:

Code:

find /var/log/jboss -type f -name '*.log' -mtime +1 -exec gzip -9 '{}' ';'
find /var/log/jboss -type f -name '*.log.gz' -mtime +4 -exec rm -f '{}' ';'

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