Date: Thu, 09 Jul 2009 10:20:29 +0100 From: David Malone <dwmalone@maths.tcd.ie> To: Ollivier Robert <roberto@keltia.freenix.fr> Cc: freebsd-net@freebsd.org, Edwin Groothuis <edwin@freebsd.org> Subject: Re: NTP - default /etc/ntp.conf Message-ID: <200907091020.aa42546@walton.maths.tcd.ie> In-Reply-To: Your message of "Thu, 02 Jul 2009 10:46:08 %2B0200." <20090702084608.GA59311@roberto-al.eurocontrol.fr>
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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. 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
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