running without pool or other servers
Gary E. Miller
gem at rellim.com
Mon Sep 11 20:11:02 UTC 2017
Yo shouldbe!
On Mon, 11 Sep 2017 15:17:37 +0100
shouldbe q931 <shouldbeq931 at gmail.com> wrote:
> I am attempting to run ntpsec in a "standalone" instance where it is
> only provided time and PPS from a GPS receiver (via gpsd).
>
> The relevant lines in ntp.conf I have arrived at are
>
> # GPS PPS reference (NTP1)
> refclock shm unit 1 refid PPS minpoll 0 maxpoll 0
>
> # GPS Serial data reference (NTP0)
> refclock shm unit 0 prefer minpoll 4 maxpoll 4 time1 +0.118 stratum 1
> refid GPS flag1 1
You are missing prefer on SHM(1). Otherwise ntpd does not know to prefer
the PPS over the NMEA time. Some would also add noselect to SHM(0).
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
gem at rellim.com Tel:+1 541 382 8588
Veritas liberabit vos. -- Quid est veritas?
"If you can’t measure it, you can’t improve it." - Lord Kelvin
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