Date: Tue, 31 May 2005 16:20:50 -0700 From: Vizion <vizion@vizion.occoxmail.com> To: Bill Moran <wmoran@potentialtech.com> Cc: freebsd-questions@freebsd.org Subject: Re: nameserver changing Message-ID: <200505311620.50699.vizion@vizion.occoxmail.com> In-Reply-To: <20050531184341.5fae492b.wmoran@potentialtech.com> References: <200505311433.54138.vizion@vizion.occoxmail.com> <200505311502.42243.vizion@vizion.occoxmail.com> <20050531184341.5fae492b.wmoran@potentialtech.com>
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On Tuesday 31 May 2005 15:43, the author Bill Moran contributed to the dialogue on- Re: nameserver changing: >Vizion <vizion@vizion.occoxmail.com> wrote: >> 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 <vizion@vizion.occoxmail.com> 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 > >FreeBSD uses /etc/resolv.conf to find DNS servers. In my experience, any >changes to that file take effect immediately, with no reboot or other >magic required. Yep cool that will work Thansk D -- 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.
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