From owner-freebsd-questions@FreeBSD.ORG Tue May 31 22:07:52 2005 Return-Path: X-Original-To: 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 9989E16A41C for ; Tue, 31 May 2005 22:07:52 +0000 (GMT) (envelope-from vizion@vizion.occoxmail.com) Received: from lakecmmtao06.coxmail.com (lakecmmtao06.coxmail.com [68.99.120.82]) by mx1.FreeBSD.org (Postfix) with ESMTP id 19D3343D53 for ; Tue, 31 May 2005 22:07:51 +0000 (GMT) (envelope-from vizion@vizion.occoxmail.com) Received: from dns1 ([64.58.171.82]) by lakecmmtao06.coxmail.com (InterMail vM.6.01.04.04 201-2131-118-104-20050224) with ESMTP id <20050531220750.SQZQ6121.lakecmmtao06.coxmail.com@dns1>; Tue, 31 May 2005 18:07:50 -0400 From: Vizion To: Giorgos Keramidas Date: Tue, 31 May 2005 15:02:41 -0700 User-Agent: KMail/1.8 References: <200505311433.54138.vizion@vizion.occoxmail.com> <20050531215702.GE1476@gothmog.gr> In-Reply-To: <20050531215702.GE1476@gothmog.gr> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200505311502.42243.vizion@vizion.occoxmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: nameserver changing X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 May 2005 22:07:52 -0000 On Tuesday 31 May 2005 14:57, the author Giorgos Keramidas contributed to the dialogue on- Re: nameserver changing: >On 2005-05-31 14:33, Vizion wrote: >> Hi >> >> I want to be able to automatically remove/add one or more dns servers from >> the list of dns's used as resolvers by particular machine(s) on a network >> which I control from data stored in a file in each computer. >> e.g file might contain lines such as: >> xxx.xxx.xxx.xxx remove dns xxx.xxx.xxx >> xxx.xxx.xxx.xxx add dns xxx.xxx.xxx >> None of the machines are running their own dns servers. >> The changes will be initiated by cron. >> >> Don't ask me why I need to do it -- the answer is far too complicated :-) >> >> Suggestions please > >You could use the "template" file as a source and generate a shell >script that will be scp'ed and executed on each host. If you have enoug >time, you could write a Perl script that will read this format: > > 10.0.0.0/8 remove * > 10.0.0.0/8 add 10.0.0.2 > >and then create one Perl script for every host. The script could be >scp'ed (if you have SSH keys set up correctly) and run remotely, with >something like: > > # cat scripts/10.0.0.1.sh | ssh -l root 10.0.0.1 thanks - that sounds reasonable -- is freebsd configured to refer to etc/hosts to look up the dns server ips on every occasion or do I have to reload? David -- 40 yrs navigating and computing in blue waters. English Owner & Captain of British Registered 60' bluewater Ketch S/V Taurus. Currently in San Diego, CA. Sailing May/June bound for Europe via Panama Canal.