NTP - default /etc/ntp.conf
David Malone
dwmalone at maths.tcd.ie
Thu Jul 9 09:20:41 UTC 2009
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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