Dual DNS entries (was no subject)

Bill Davidsen davidsen at tmr.com
Fri Apr 20 01:03:50 UTC 2007


Gareth Howlett wrote:
>>> I have an odd question about updating a DNS server with an FC4
> machine's
>>> entry...
>>>
>>> I have two NICs on the same box and I want each of them to respond to
>>> different hostnames... EG: NIC1 = 1.abc.com, NIC2= 2.abc.com... Is
> there
>>> a way of doing this with the default FC4-style install (besides the
>>> obvious cron script using nsupdate)?
>>>
>>> - Gareth
>>>
>> I am not sure I understand the question. If I am hearing you right,
> you 
>> have one box with two IP addresses. You have another box (maybe) that
> is 
>> running a DNS. You want to have two DNS names that point the same box 
>> but are specific to the interfaces. Is this right?
>>
>> If so, just create two "A" records. Each one will have its own name
> and 
>> will reference the specific IP addresses you are wanting them to 
>> associate with.
>>
>> This seems a little too easy... am I missing something?
> 
> Nope, you got the idea, but... Maybe I forgot to include a few details
> which make a little tougher - I don't admin the DNS server; I can't add
> static, permanent entries on the server side.  I need to be able to add
> these entries remotely and preferably using a Fedora-standard way (not
> writing my own script to do it).
> 
> I know when you're using DHCP there are some lines you can specify in
> the ifcfg-eth* files to update the DNS.  Is there an equivalent when
> using static IPs?
> 
You can put entries in /etc/hosts, allows definition of lookups for 
hosts not in DNS. Also useful if your DNS server on your ISP is an 
overloaded and/or poorly run service.




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