ついでにログローテーションの確認をしてみると、エラーをはいていた。
# cat /var/log/router (略 May 22 13:37:18 xxxxxx logrotate: ALERT exited abnormally with [1]
ログローテートコマンドで確認してみる。
# /usr/sbin/logrotate -vd /etc/logrotate.conf reading config file /etc/logrotate.conf including /etc/logrotate.d reading config file acpid reading config info for /var/log/acpid reading config file clamav reading config info for /var/log/clamav/clamd.log reading config file conman (略 reading config file syslog reading config info for /var/log/messages /var/log/secure /var/log/maillog /var/log/spooler /var/log/boot.log /var/log/cron /var/log/router reading config file vsftpd.log reading config info for /var/log/vsftpd.log error: vsftpd.log:7 duplicate log entry for /var/log/xferlog