$ sudo journalctl -u loglist
-- Logs begin at Fri 2016-12-02 21:20:01 EST, end at Mon 2016-12-05 10:13:42 EST. --
Dec 04 06:47:54 xmpp1 systemd[1]: loglist.service: Main process exited, code=killed, status=9/KILL
Dec 04 06:47:54 xmpp1 systemd[1]: loglist.service: Unit entered failed state.
Dec 04 06:47:54 xmpp1 systemd[1]: loglist.service: Failed with result 'signal'.
That's OOM Killer. I think that's not a loglist issue, but the cause is lack of available RAM on our production server. Will fix with systemd configuration.
Here's what we have in the logs today:
That's all. No idea or logs about what happened.