Hi, my logrotate seems never working.

I have a few customized logrotate configuration, one of them:

> cat /etc/logrotate.d/mongo.conf
# /etc/logrotate.d/

/app/intellisurf/logs/mongodb/mongod.log {
compress
copytruncate
daily
dateext
rotate 7
size 50M

manual testing is fine (> sudo logrotate -f /etc/logrotate.d/mongo.conf)

if I checked /var/lib/logrotate.status, all are long time ago:

> cat /var/lib/logrotate.status
logrotate state -- version 2
"/var/log/iscsiuio.log" 2017-5-12-11:0:0
"/var/log/apache2/deflate.log" 2017-5-12-11:0:0
"/var/log/samba/log.nmbd" 2017-5-12-11:0:0
"/var/log/news/news.crit" 2017-5-12-11:0:0
"/var/log/tomcat/catalina.out" 2017-5-14-11:0:1
"/app/intellisurf/log/mysql/mysqld.log" 2017-5-18-11:0:0
"/var/log/slpd.log" 2017-5-12-11:0:0
......

I didnot make any changes to default /etc/logrotate.conf:
> cat /etc/logrotate.conf
# see "man logrotate" for details
# rotate log files weekly
weekly
......

I can see logrotate inside /etc/cron.daily:

> ll /etc/cron.daily/
total 40
-rwxr-xr-x 1 root root 634 Sep 21 2014 logrotate
-rwxr-xr-x 1 root root 778 Oct 15 2016 mdadm
-rwxr-xr-x 1 root root 1414 Oct 26 2016 packagekit-background.cron
-rwxr--r-- 1 root root 948 Sep 27 2014 suse-clean_catman
-rwxr-xr-x 1 root root 1879 Oct 14 2016 suse.de-backup-rc.config
-rwxr-xr-x 1 root root 2059 Sep 11 2014 suse.de-backup-rpmdb
-rwxr-xr-x 1 root root 566 Sep 11 2014 suse.de-check-battery
-rwxr-xr-x 1 root root 371 Sep 11 2014 suse.de-cron-local
-rwxr-xr-x 1 root root 744 Oct 26 2016 suse.de-snapper
-rwxr--r-- 1 root root 1693 Sep 27 2014 suse-do_mandb

but I cannot see it in systemctl timer list and also cannot enable it (no such file or directory):

> sudo systemctl list-timers -all
NEXT LEFT LAST PASSED UNIT ACTIVATES
Tue 2017-10-17 12:05:01 SGT 19h left Mon 2017-10-16 12:05:01 SGT 4h 59min ago systemd-tmpfiles-clean.timer systemd-tmpfiles-clean.service
Mon 2017-10-23 00:00:00 SGT 6 days left Mon 2017-10-16 11:50:21 SGT 5h 14min ago fstrim.timer fstrim.service

2 timers listed.

How to enable logrotate and verify it?

Thanks.