Logrotate uses 100% CPU issue on CentOS

A typical /var/lib/logrotate.status looks like:

logrotate state -- version 2
"/var/log/daemon.log" 2015-5-9
"/var/log/portage/elog/summary.log" 2015-5-9
"/var/log/mysql/mysql.err" 2015-5-9
"/var/log/mysql/mysql.log" 2015-5-9
"/var/log/mysql/mysqld.err" 2015-5-9
"/var/log/atop/dummy_before" 2015-5-25
"/var/log/atop/dummy_after" 2015-5-25
"/var/log/net-snmpd.log" 2015-5-9
"/var/log/xinetd.log" 2015-5-23
"/var/log/wtmp" 2015-5-9

It is a small file say hundred bytes, but the size may reaches megabytes if there are some config errors.

Following command can be used to check the configuration of logrotate without change anything:

sudo /usr/sbin/logrotate -d /etc/logrotate.conf

reading config file /etc/logrotate.conf

including /etc/logrotate.d

reading config file daemon

reading config info for /var/log/daemon.log

reading config file elog-save-summary

reading config info for /var/log/portage/elog/summary.log

reading config file mysql

...

It may indicate a bad logrotate.status file if the command hangs with a huge logrotate status file,  

To fix the problem, simply delete the logrotate.status. The logrotate will re-create a new one for you.