Many thanks Vince and Scott. On Sunday, February 10, 2019 at 7:24:12 PM UTC-5, Scott Grayban wrote: > > If you look > at > /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf > > # don't run timesyncd if we have another NTP daemon installed > *ConditionFileIsExecutable=!/usr/sbin/ntpd* > ConditionFileIsExecutable=!/usr/sbin/openntpd > ConditionFileIsExecutable=!/usr/sbin/chronyd > ConditionFileIsExecutable=!/usr/sbin/VBoxService > > So it's completely disabled with NTP > > On Sunday, February 10, 2019 at 11:05:40 AM UTC-8, vince wrote: >> >> On Sunday, February 10, 2019 at 10:44:48 AM UTC-8, V. Kelly Bellis wrote: >>> >>> http://weewx.com/docs/usersguide.htm states that I should run a NTP >>> <http://www.ntp.org/> daemon, but doesn't address an existing/ running >>> pre-installed timesync service; e.g., installed with Raspbian via NOOBS >>> >>> Elsewhere <http://raspberrypi.tomasgreno.cz/ntp-client-and-server.html>, >>> we read that timesync and NTP should not be run at the same time - "*but >>> you can not have running both of them at the same time*" >>> >>> Is the pre-installed timesync sufficient for weewx? Either way, could >>> the users guide include some mention of timesync's shortcomings or >>> sufficiency insofar as weewx is concerned? >>> >>> >>> >> The users guide can't/shouldn't try to cover all the nuances of every >> operating system nor the sheer unfettered joy that is systemd (ha - beat >> Matthew to it!) >> >> What happens is if you run NTP, systemd gets out of the way and doesn't >> enable its ntp hack/feature/whatever. >> >> So, FWIW, I always run NTP because I have decades of positive experience >> with that software. It's a well-understood thing. Much easier to debug >> when that's needed. >> >> (and any time I can disable systemd 'helping' me, I tend to do so. That >> thing is much harder to debug when it goes whacko.) >> >> >
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