Date: Wed, 1 Jun 2005 00:57:02 +0300 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: Vizion <vizion@vizion.occoxmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: nameserver changing Message-ID: <20050531215702.GE1476@gothmog.gr> In-Reply-To: <200505311433.54138.vizion@vizion.occoxmail.com> References: <200505311433.54138.vizion@vizion.occoxmail.com>
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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
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