Re: [chrony-users] [Question] chronyc tracking shows large offset

[Bill Unruh <unruh@xxxxxxxxxxxxxx>]

Not sure what you think the problem is. The leap second notification is sent
out by NIST I beleive, and the various sources will send it out as pat of the
ntp packet. Change to leap second has nothing to do with your machine. If you
unplug it, then there is no way your machine can know what the leapstatus is. 
so why should it change it. Note also if your machine is unplugged it cannot
know what the time is, except from itself.


William G. Unruh __|__Hagler Fellow, Distinguished |_Tel:UBC +1(604)822-3273
Physics&Astronomy _|__ Research Prof, IQSE         |__  US +1(979)7399950
UBC, Vancouver,BC _|_ TAMU4242, 578 University Dr  |_ unruh@xxxxxxxxxxxxxx
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On Wed, 5 Nov 2025, zc z wrote:

> [CAUTION: Non-UBC Email]
>
> version: chrony 4.4
>
> OS: Ubuntu 18.04
>
>
> I have a question regarding the “Leap Status” field in the chronyc -n
> tracking command.
>
> My chrony.conf configuration is as follows:
>
> server 192.168.46.99 iburst minpoll 2 maxpoll 2
> driftfile /var/lib/chrony/drift
> makestep 0.05 3
> maxdistance 1.6
>
> I ran a script to record chronyc -n tracking output every 5 seconds. When I
> unplugged the network cable and waited for 20 hours, I observed that the Leap
> Status remained Normal. At that time, the rootdelay was 1.00000238 ms and root
> dispersion was 1.338544011 s. The accumulated estimated error exceeded 1.6
> seconds (maxdistance), yet the Leap Status did not change to Not synchronized.
>
> Could you please clarify why the Leap Status remains Normal under these
> conditions? How long does it take for the Leap Status to change, or how can I
> configure it to detect anomalies, such as a network disconnection, and switch to
> Not synchronized?
>
>
> Thank you for your help.
>
> Best regards