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I can see following in the syslog (on ubuntu 16.04)

Mar 28 22:51:36 gitserv systemd[1]: apt-daily.timer: Adding 5h 9min    12.773843s random time.
Mar 28 22:51:36 gitserv systemd[1]: snapd.refresh.timer: Adding 3h 24min 34.415866s random time.
Mar 28 22:51:41 gitserv systemd[1]: Time has been changed
Mar 28 22:51:41 gitserv systemd[1304]: Time has been changed

I have disabled both snapd.refresher.service and apt-daily.service

● apt-daily.service - Daily apt activities
 Loaded: loaded (/lib/systemd/system/apt-daily.service; static; vendor preset: enabled)
 Active: inactive (dead)
 Docs: man:apt(8)


● snapd.refresh.service - Automatically refresh installed snaps
Loaded: loaded (/lib/systemd/system/snapd.refresh.service; static; vendor preset: enabled)
Active: inactive (dead)
Docs: man:snap(1)

I have disabled the NTP sync as well, but this continues to appear at 2-3 second intervals.

Your help is much appreciated, thanks in advance.

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  • 1
    unix.stackexchange.com/questions/166639/… may be helpful – Mark Stosberg Mar 28 '17 at 18:31
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    Thanks for the response @Mark Stosberg, above solution points to disable logging to avoid the log entry. but it looks like apt-daily service and snapd are resetting the time set by each other, which might be the root cause. So how can I address that issue ? Thanks – Harsha Amarasiri Mar 29 '17 at 3:48
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This worked for me. Not sure if you are running your server on a Hyper-V VM though. /var/log/syslog 'systemd[1]: Time has been changed' message every 5 seconds

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