NTP Last changed: 2005-07-24 [8:22] Content: Configuring NTP time services   Back to Personal Wiki

Table of contents OpenNTPD setup Links

OpenNTPD setup

Access restrictions

listen on 127.0.0.1
listen on 192.168.178.2

Selecting a server

NTP Pool Time Servers

pool.ntp.org uses DNS round robin to make a random selection from a pool of OpenAccess time servers. This is often good enough for end-users. The minimal ntpd configuration file (e.g. /etc/ntpd.conf) for using pool.ntp.org is:

servers de.pool.ntp.org

UPDATED If you have a buggy DNS name resolver which doesn't properly do round robin ('ntpq -pn' shows the same server three times) you can use 0.pool.ntp.org, 1.pool.ntp.org and 2.pool.ntp.org. For users of pool.ntp.org zones, there are now also 0, 1 and 2. subzones. If enough servers are available, the subzones won't overlap (currently only europe and the global zone), for the other zones, some servers may be present in more than one subzone.

Currently I use this:

server ntp1.theremailer.net
server tick.keso.fi
server time2.one4vision.de
server timeserver.ntp.ch

/etc/conf.d/ntpd

# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/net-misc/openntpd/files/openntpd.conf.d,v 1.2 2004/11/22 15:27:51 vapier Exp $

NTPD_HOME=/var/chroot/ntpd

NTPD_OPTS=""

Links

Most are actually ntp links, not so much openntpd:

NTP pool time servers

http://ntp.isc.org/bin/view/Servers/NTPPoolServers

NTP notes

http://users.dslextreme.com/~craig.lawson/linux_notes/clock.html

NTP setup

http://webpages.charter.net/decibelshelp/LinuxHelp_NTP.html

NTP setup 2

http://linuxreviews.org/howtos/ntp/

NTP - Gentoo Wiki

http://de.gentoo-wiki.com/NTP

OpenNTPD

http://www.openntpd.org/

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