bind round robin

[pinoyskull]

Doug Barton wrote:
> Chris H. wrote:
>   
>> Greetings all,
>> ...
>> Quoting Doug Barton <dougb at freebsd.org>:
>>
>>     
>>> Oliver Brandmueller wrote:
>>>       
>>>> DNS round robin is not about redundancy, the only thing you could have
>>>> that way is a kind of load balancing (not the most sophisticated way,
>>>> though). Whenever one of the servers fails, around half of the requests
>>>> still goes there and then times out/gets conn refused or whatever the
>>>> problem is. Prioritizing is not easily possible. Probably it helps if
>>>> you add one of the IPs more often to the set, but I never tried that and
>>>> did not read the docs on this topic, so before breaking your zone first
>>>> read the specs, if this works!
>>>>         
>>> Just replying to this bit first, in BIND it does not work to specify
>>> the same IP address multiple times for the same hostname. The server
>>> will collapse the duplicates into one unique entry when it reads the
>>> zone. I am not aware of any other authoritative name server for which
>>> this would work either.
>>>       
>> While this /might/ hold true in some/certain situations.
>>     
>
> Under the circumstances that Oliver suggested, what I said holds true
> in every situation (assuming you are using BIND). The example you
> pasted, while colorful, is not actually an example of what Oliver
> suggested. If you would like me to write out an example I will, but:
> A) This subject is already off topic, and
> B) It would more usefully be left as an exercise for the reader.
>
>   
>> I /can/ say after 3.5 yrs. of doing exactly this,
>>     
>
> Bzzzzzzzzzzzt. See above.
>
>   
>> that it does not collapse the namespace into a single IP<-->name.
>>     
>
> It might also be useful to note here that nothing about DNS is
> (automatically) bi-directional in the manner you imply here.
>
> I do concur with your suggestion to move this thread to a list that is
> focused on DNS, however ....
>
> Doug
>
>   
thanks for the reply guys, although our dns server is runnung freebsd, 
my problem specifically is DNS, ill try posting my problem to the right 
mailing list, thanks again.