From owner-freebsd-questions@FreeBSD.ORG  Tue Jun 29 09:15:35 2004
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id E865A16A4CE
	for <freebsd-questions@freebsd.org>;
	Tue, 29 Jun 2004 09:15:35 +0000 (GMT)
Received: from auk1.snu.ac.kr (auk1.snu.ac.kr [147.46.100.31])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 87F5943D53
	for <freebsd-questions@freebsd.org>;
	Tue, 29 Jun 2004 09:15:35 +0000 (GMT)
	(envelope-from stopspam@users.sourceforge.net)
Received: from [147.46.44.181] (stopspam@users.sourceforge.net) by 
          auk1.snu.ac.kr (Terrace Internet Messaging Server) 
          with ESMTP id 2004062918:15:01:316010.24099.3045211056
          for <freebsd-questions@freebsd.org>; 
          Tue, 29 Jun 2004 18:15:01 +0900 (KST) 
Message-ID: <40E13322.4070201@users.sourceforge.net>
Date: Tue, 29 Jun 2004 18:15:14 +0900
From: Rob <stopspam@users.sourceforge.net>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.6) Gecko/20040507
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: freebsd-questions@freebsd.org
References: <40E0C929.4090401@users.sourceforge.net>
In-Reply-To: <40E0C929.4090401@users.sourceforge.net>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
X-TERRACE-SPAMMARK: NO       (SR:1.71)                     
  (by Terrace)                                                   
Subject: Re: FreeBSD cluster: ntpd does not sync time properly?
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 29 Jun 2004 09:15:36 -0000

Rob wrote:
> 
> Hello,
> 
> I have a FreeBSD cluster, all PCs running FreeBSD-Stable (as of
> one week ago). The cluster has a master, connected to the Internet,
> and the master is also router, caching nameserver and timeserver
> for the internal network.
> The master has two internet cards, and there are 6 slaves
> on the internal network.
> 
> Problem is, that as time goes on, the system time on master
> and slaves deviate more and more.
> 
> Here is my configuration for the time server configuration:
> 
> on MASTER (192.168.0.100)
> rc.conf:
>   ntpdate_enable="YES"
>   ntpdate_flags="-b time.kriss.re.kr time.nuri.net"
>   xntpd_enable="YES"
> ntp.conf:
>   # prohibit general access to this service
>   restrict default ignore
>   # allow hosts on the 192.168.0.0/24 subnet to query this server
>   restrict 192.168.0.0 mask 255.255.255.0 nomodify notrap
>   # localhost has full access to the server
>   restrict 127.0.0.1
>   server time.kriss.re.kr prefer
>   server time.nuri.net
>   driftfile /etc/ntp.drift
> 
> 
> on SLAVE<N> (192.168.0.<N>)
> rc.conf:
>   ntpdate_enable="YES"
>   ntpdate_flags="-b 192.168.0.100"
>   xntpd_enable="YES"
> ntp.conf:
>   # prohibit general access to this service
>   restrict default ignore
>   # localhost has full access to the server
>   restrict 127.0.0.1
>   server 192.168.0.100
>   driftfile /etc/ntp.drift
> 
> 
> The idea is that at boot-up, time is instantly synchronized once by
> unsing "ntpdate -b"; after that ntpd will control time adjustments.
> 
> Am I making a mistake in this setup?

Found the solution myself. I should use timed on the internal network, instead
of ntpd deamon. That seems to work fine.

R.