Shippable ntp.conf files for the HOWTO
Gary E. Miller
gem at rellim.com
Thu Jun 9 21:18:20 UTC 2016
On Thu, 09 Jun 2016 21:54:56 +0200
Achim Gratz <Stromeko at nexgo.de> wrote:
> Gary E. Miller writes:
> > # if you have no other local chimers to help NTP perform sanity
> > checks # then you can use some public chimers from the NTP public
> > pool: # http://www.pool.ntp.org/en/
> Perhaps mention that there's a link to the continental zones on that
> page with more links to the country zones on that continent.
Got a suggested working?
> > # To use the pool servers uncomment the last four lines in this
> > section.
> Just any one such line is enough.
No, I get a lot of dead servers from the pool. And with more than
one there is achance one is not 2,000 miles away.
> It seems that chosing multiple
> pools from the same zone increases the chances of getting the same
> server assigned twice.
Not a problem.
> > # The iburst option tells ntpd to query the pool serers with
> > bursts instead
> The iburst is supposed to only affect the initial contact to the
> servers, contrary to the burst option (which IIRC is shunned by
> NTPpool), which would use bursts on all contacts.
I tweaked the wording to make that clearer.
> I'd still drop the country code since someone not in the U.S. will
> just uncomment the line(s) anyway.
I get horrible servers when I do that. Sure it works for some people
and is insanely perverse for others. That leads to the pool getting an
> The add a text to the effect that
> one should use the local country or continental zone after looking it
> up via the address given above.
Having spent a lot of time in asia, I can tell you that using the
asia.pool.ntp.org can be worse than the basic pool. You would think that
a place like Sinagpore would be low ping to Malaysia, but almost all the
interlinks go to LA and back! I have heard of similar issues in Africa.
The text already links to the pool web, do you have suggested better
> Now, at least for the raspberryPi, the easier way of doing this is
> keeping the ntpd package installed and configured,
I'll leave that argument between you and Eric. I'm a Gentoo user
and that does not apply to me, nor do I wish to aid and abet
So, current best wording:
# If you have no other local chimers to help NTP perform sanity checks
# then you can use some public chimers from the NTP public pool:
# To use the pool servers uncomment the last four lines in this section.
# The iburst option tells ntpd to query the pool servers with an initial
# bursts instead of single requests. This can yield better results on
# startup to remote servers.
# Notice I use the 'us' country code servers, otherwise I might get one
# pool server from Ukraine and another from Singapore. If you are
# not in the USA, then change the 'us' to your two letter country code.
# server 0.us.pool.ntp.org iburst
# server 1.us.pool.ntp.org iburst
# server 2.us.pool.ntp.org iburst
# server 3.us.pool.ntp.org iburst
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
gem at rellim.com Tel:+1 541 382 8588
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