nameserver changing

[Vizion]

On Tuesday 31 May 2005 15:43,  the author Bill Moran contributed to the 
dialogue on-
 Re: nameserver changing: 

>Vizion <vizion at 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 at 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

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