vsftpd/vsftpd.logrotate

/var/log/vsftpd.log {
	compress
	dateext
	maxage 365
	rotate 99
	size=+1024k
	notifempty
	missingok
	create 600 root root
	sharedscripts
	postrotate
		pgrep vsftpd && killall -HUP vsftpd || exit 0
	endscript
}