Date: Thu, 9 Jul 2009 15:15:03 -0500 (CDT) From: "Sean C. Farley" <scf@FreeBSD.org> To: David Malone <dwmalone@maths.tcd.ie> Cc: Edwin Groothuis <edwin@FreeBSD.org>, freebsd-net@FreeBSD.org Subject: Re: NTP - default /etc/ntp.conf Message-ID: <alpine.BSF.2.00.0907091512150.75393@thor.farley.org> In-Reply-To: <200907091020.aa42546@walton.maths.tcd.ie> References: <200907091020.aa42546@walton.maths.tcd.ie>
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On Thu, 9 Jul 2009, David Malone wrote: > The NTP pool guys have set up our vendor domain. I'd like to commit > the patch below to ntp.conf. It does the following: > > 1) Uses our vendor domain at the pool. > 2) Points people at the pool website and encourages > people to provide a server in the pool (as a > courtesy to the pool guys). > 3) Fixes a spelling. > 4) Comments out the local clock and includes a link > to documentation for use of the local clock on > the ntp.org site. > > If there are no objections, I'll ask re@ for permission to commit > this. Is 3.freebsd.pool.ntp.org intentionally commented? It does resolve. Reminder: if you do uncomment it, remember to change the "three servers" to four. Otherwise, it looks good to me. > David. > > Index: ntp.conf > =================================================================== > --- ntp.conf (revision 195484) > +++ ntp.conf (working copy) > @@ -13,19 +13,22 @@ > # > # The following three servers will give you a random set of three > # NTP servers geographically close to you. > -# See http://en.wikipedia.org/wiki/NTP_pool for details. > +# See http://www.pool.ntp.org/ for details. Note, the pool encourages > +# users with a static IP and good upstream NTP servers to add a server > +# to the pool. See http://www.pool.ntp.org/join.html if you are interested. > # > # The option `iburst' is used for faster initial synchronisation. > # The option `maxpoll 9' is used to prevent PLL/FLL flipping on FreeBSD. > # > -server 0.pool.ntp.org iburst maxpoll 9 > -server 1.pool.ntp.org iburst maxpoll 9 > -server 2.pool.ntp.org iburst maxpoll 9 > +server 0.freebsd.pool.ntp.org iburst maxpoll 9 > +server 1.freebsd.pool.ntp.org iburst maxpoll 9 > +server 2.freebsd.pool.ntp.org iburst maxpoll 9 > +#server 3.freebsd.pool.ntp.org iburst maxpoll 9 > > # > # If you want to pick yourself which country's public NTP server > # you want sync against, comment out the above servers, uncomment > -# the next ones and replace CC with the country's abbrevation. > +# the next ones and replace CC with the country's abbreviation. > # Make sure that the hostnames resolve to a proper IP address! > # > # server 0.CC.pool.ntp.org iburst maxpoll 9 > @@ -50,10 +53,12 @@ > #restrict 127.127.1.0 > > # > -# If we lose sync against all configured servers, the NTP clients > -# syncing against this server will lose sync too. To overcome this, > -# we will act as a stratum 10 server with our own internal clock > -# so that everybody at least will have the same time as we have. > +# If a server loses sync with all upstream servers, NTP clients > +# no longer follow that server. The local clock can be configured > +# to provide a time source when this happens, but it should usually > +# be configured on just one server on a network. For more details see > +# http://support.ntp.org/bin/view/Support/UndisciplinedLocalClock > +# The use of Orphan Mode may be preferable. > # > -server 127.127.1.0 > -fudge 127.127.1.0 stratum 10 > +#server 127.127.1.0 > +#fudge 127.127.1.0 stratum 10 > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > Sean -- scf@FreeBSD.org
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