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Re: set up monin and mydns dns-server


From: monit user
Subject: Re: set up monin and mydns dns-server
Date: Wed, 05 Sep 2007 09:16:10 -0700
User-agent: Thunderbird 2.0.0.6 (Macintosh/20070728)

Many (most?) non-bind DNS server software will fail the dns protocol test in monit as it is written (dbjdns, mydns and a couple others that I tested so far), AFAIK because bind includes a "default" referral response to a query about the root servers. Even the great and powerful Paul Vixie admitted that this is something that most servers shouldn't be doing and others pointed out non-broken client resolver libraries will reject/throw out such a response.

The relationship between BIND and some of the DNS RFCs act a good example of why it sucks to take a certain application's behavior and codify it as a set of standards, as we are currently experiencing with OOXML.

To work across all DNS servers, the test should have the following options:

Protocol: UDP or TCP
Query Type: A, NS, etc
and if you care about the exact value of the response rather than the fact that there was or was not a response from the server an "expect" or "checksum" section for checking the response.

Can this go on the list? http://www.tildeslash.com/monit/doc/next.php
or how do things get on the list?

How many hours do you think it would take to add a parameterized dns test?

Samuel Vogel wrote:
I would really like to do this, but actually I can only code python and php and my C skills hardly can accomplish more than writing a few if's and initializing variables...

I could provide alle the infos somebody of the mydns team would need to accomplish this task. Since a DNS check is allready there, I'd hope there is only a small problem, that needs to be fixed.

Regards,
Samy

Jan-Henrik Haukeland schrieb:
On 5. sep. 2007, at 08.07, Samuel Vogel wrote:

The logs point me to the Porblem, that mydns somehow fails the DNS Test, even thou it answers all querys normaly

An excellent opportunity for you to create a patch of monit's dns test @ protocol/dns.c :-)


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