hmurray at megapathdsl.net
Sun Jan 14 23:05:51 UTC 2018
paul at anastrophe.com said:
> So, I'm confused. Should I employ ntpleapfetch from cron and include the
> leapfile directive in my ntp.conf? Or is it best to exclude all of this on
> a public NTPsec server?
Debian distributes a copy of the NIST leap file in
It's part of the tzdata package.
I don't know how well they keep it up to date, but my copy looks good.
ntpd should work correctly with or without a leap file.
The leap pending info is sent in the NTP reply packets. The client takes a
majority vote. I think that's distributed a month early and passed to the
kernel a day early.
If you have a valid leap file, it ignores the network info and believes the
You can also get the leap-pending info from some refclocks. I'm not sure of
the priority of refclock vs leap-file. I suspect the refclock gets OR-ed
with the network info.
Historically, there have been bugs in leap info from refclocks and from the
Is there a standard way to run cron jobs at random days/times?
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