How to check ntp status?

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2

You can add an hotplug script to react when there is an ntpd event.

For my own system I have set a logging line for the initial synchronising and the server stratum events, but not for every periodic update.

Below is example from my build, where I use hotplug to log NTP events to system log:

root@router1:~# cat /etc/hotplug.d/ntp/20-ntpd-logger
#!/bin/sh
[ $ACTION = "step" ]    && logger -t ntpd Time set, stratum=$stratum interval=$poll_interval offset=$offset
[ $ACTION = "stratum" ] && logger -t ntpd Stratum change, stratum=$stratum interval=$poll_interval offset=$offset

The output in system log looks like:

root@router1:~# logread | grep ntp
Tue Mar 24 08:24:51 2020 user.notice ntpd: Time set, stratum=16 interval=32 offset=41280.463320
Tue Mar 24 08:24:52 2020 user.notice ntpd: Stratum change, stratum=3 interval=32 offset=-0.000191
Tue Mar 24 10:17:57 2020 user.notice ntpd: Stratum change, stratum=4 interval=512 offset=0.007282
Tue Mar 24 10:26:39 2020 user.notice ntpd: Stratum change, stratum=3 interval=512 offset=0.002756
Tue Mar 24 11:46:07 2020 user.notice ntpd: Stratum change, stratum=4 interval=1024 offset=0.008404
Tue Mar 24 12:01:00 2020 user.notice ntpd: Stratum change, stratum=3 interval=1024 offset=0.002724

See

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