Hi,
It is somewhat helpful but doesn't solve my issues. I understand that to
return NXDOMAIN my queries should not return data, but how can I do that
when Powerdns uses ANY queries to fetch the data all the time? The only
query types that I see in the MySQL logs are SOA, NS and ANY. If there
are no MX records for abc.example.com but there is an A record for
abc.example.com, my ANY query is never able to return 0 rows. As I said,
in that case I would expect Powerdns to filter out nonrelevant records.
FWIW, here's the order of queries in the MySQL logs when, for example, I
query a nonexistent TXT record for abc.example.com . I have only listed
queries relevant for the backend the domain example.com is in, since the
other backend successfully returns no data at all for that domain.
type='SOA' AND domain='abc.example.com' => returns nothing
type='SOA' AND domain='example.com' => returns 1 SOA record
type='NS' => returns nothing (I'm not sure where this query is coming
from because it resembles one of my custom queries but it is definitely
not one of them?)
ANY-ID query for abc.example.com => returns 1 row that contains an A
record
PRESIGNED metadata query => returns nothing
NSEC3PARAM metadata query => returns nothing
type='SOA' AND domain='example.com' => returns 1 SOA record
ANY-ID query for example.com => returns TXT record, 2 NS records, SOA
record and an A record
SOA-EDIT metadata query => returns nothing
Martin
On 30-10-2015 17:29, bert hubert wrote:
On Fri, Oct 30, 2015 at 04:07:13PM +0100, Martin wrote:
Hi,
I have a question about how Powerdns works internally after having
read the documentation at
https://doc.powerdns.com/md/authoritative/internals/
Martin,
Can you read
http://blog.powerdns.com/2015/06/23/what-is-a-powerdns-backend-and-how-do-i-make-it-send-an-nxdomain/
to see if it helps?
Bert
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