Date: Thu, 6 Jun 2019 00:10:30 +0200 From: Per Hedeland <per@hedeland.org> To: "Ronald F. Guilmette" <rfg@tristatelogic.com> Cc: freebsd-questions@freebsd.org Subject: Re: ntpd configutration -- a small suggestion from the peanut gallery Message-ID: <11728008-40bb-4ff6-5a93-5ebf28ce4735@hedeland.org> In-Reply-To: <52802.1559769936@segfault.tristatelogic.com> References: <52802.1559769936@segfault.tristatelogic.com>
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On 2019-06-05 23:25, Ronald F. Guilmette wrote: > > In message <alpine.BSF.2.20.1906051648560.44637@fledge.watson.org>, > doug@fledge.watson.org wrote: > >>> Did I just miss those ntpd death messages somehow? >> >> I'm not sure. Somewhere in the ntp docs it says ntpd will not change the time if >> the offset is too large... > > Yes. Here is the exact quote from the current man page for ntpd: > > -g, --panicgate > Allow the first adjustment to be Big. This option may appear an > unlimited number of times. > > Normally, ntpd exits with a message to the system log if the > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > offset exceeds the panic threshold, which is 1000 s by default. > > So either I need new glasses or else that part underlined above is just plain > wrong. Because even after my ntpd died several times, I was unable to find > -any- message telling me that ntpd had chosen suicide, let alone what the > reasons for that might have been. At least not in /var/log/messages. I know that the underlined part *used to* be correct, since I have seen those messages in the distant past (on FreeeBSD they would indeed be in /var/log/messages, but that is OS-dependant). I don't remember the exact wording though, and doing a quick test, I can confirm your observation - nothing at all is logged by the ntpd version included in FreeBSD 12.0-RELEASE when it commits suicide due to the offset exceeding the panic threshold. So I guess the logging was lost at some point. https://bugs.ntp.org/show_bug.cgi?id=1130 https://bugs.ntp.org/show_bug.cgi?id=2410 Unfortunately the activity seen in those bug reports, including not even applying a provided patch, is probably typical for the maintenance of the "reference implementation" these days. --Per
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