can I set the second nameserver to a public dns cache?
Joseph S D Yao
jsdy at tux.org
Mon Mar 28 12:49:14 UTC 2011
On Mon, Mar 28, 2011 at 08:25:46PM +0800, terry wrote:
> Hello,
>
> I have only one nameserver for a domain.
> Can I set the second nameserver for this domain to a public dns cache?
> for example:
>
>
> abc.com. IN NS ns1.abc.com.
> abc.com. IN NS ns2.abc.com.
>
> ns2.abc.com. IN A 8.8.8.8 # 8.8.8.8 is google's public dns server
>
>
> Since DNS cache does a rec-resolver, so it will also answer with the
> correct result?
You can set another peer nameserver to be a public, private,
commercial, or other name server as follows:
; Zone file for abc.com.
$TTL xxx
@ IN SOA ...
IN NS ns1.abc.com.
IN NS google-public-dns-a.google.com.
IN NS res060.ns.uu.net.
[Note the blank space in front of the [unneeded] "IN" in each "NS"
above: they each inherit the LHS from the record above.]
Assuming that an IP address that is not yours will "never" change is a
frightening assumption, especially when proved untrue. Don't plant
someon else's IP address in your name space, unless there is a firm
agreement between yourself and them about why it's there and how changes
will be communicated.
--
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** Joe Yao jsdy at tux.org - Joseph S. D. Yao
**
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