[CentOS] strange system outage

[Larry Martell]

On Wed, May 10, 2017 at 3:11 PM, Larry Martell <larry.martell at gmail.com> wrote:
> On Wed, May 10, 2017 at 3:05 PM, Alexander Dalloz <ad+lists at uni-x.org> wrote:
>> Am 10.05.2017 um 20:40 schrieb Larry Martell:
>>>
>>> I have a CentOS 7 system that I run a home grown python daemon on. I
>>> run this same daemon on many other systems without any incident. On
>>> this one system the daemon seems to die or be killed every day around
>>> 3:30am. There is nothing it its log or any system logs that tell me
>>> why it dies. However in /var/log/messages every day I see something
>>> like this:
>>>
>>> May 10 03:35:58 localhost pure-ftpd: (tool at xx.xx.xx.xx) [NOTICE]
>>> /usrMay 10 03:57:57 localhost pure-ftpd: (tool at xx.xx.xx.xx) [NOTICE]
>>>
>>> /usr/local/motor/data//B31/today/Images/CP0982436.00C_T6PH8_M0-R_1/T6PH8_M0-RN_TT6PH8_M0-R_P4_M1_FX-1_FY4_RR1_TR1_Ver3.jpg
>>> uploaded  (90666 bytes, 8322.34KB/sec)
>>>
>>>
>>> Notice how the message that was being printed at 03:35:58 is truncated
>>> mid-message and the next message is at 03:57:57 – there are always
>>> messages like around the time when the daemon dies. What could be
>>> going on here?
>>
>>
>> Have you checked /etc/cron.daily/ for a cron job to restart the pure-ftpd
>> service? /etc/cron.daily is called from /etc/anacrontab with some randomness
>> so that the execution time varies.
>
> I will check that, but the the pure-ftpd service is not my daemon that
> is getting killed - I was thinking the sudden stopping of the logging
> and subsequent time gap would be some sort of clue as to what is
> happing at that time.

/etc/cron.daily has:

0yum-daily.cron  logrotate  man-db.cron  mlocate