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user630702
Asked: 2020-05-10 02:42:14 +0800 CST

Should I disable systemd-timesyncd if ntp is installed?

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Is there any issue with running systemd-timesyncd and ntp on the same machine?

I'm asking this because I have started using NTP on all servers but the systemd-timesyncd is running there as well. Should I disable it? Any issues with both running?

ntp systemd-timesyncd

1 Answers

  1. It shouldn't be necessary to disable systemd-timesyncd if you install ntp, because the ntp service configuration includes the following:

    # grep -i conflict /lib/systemd/system/ntp.service 
Conflicts=systemd-timesyncd.service

    The same applies for the chrony service on newer Ubuntu versions.

    There have been startup bugs in the past which meant systemd-timesyncd tried to adjust the clock while another NTP server is running, producing harmless-but-annoying errors in the system logs. So there should be no harm in disabling systemd-timesyncd if that's what you prefer.

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