Re: set up monin and mydns dns-server

[Samuel Vogel]

I tried to not specify the protocol, but it doesn't work.
MyDNS stops answering queries, but monit doesn't notice that!
This is how my config file looks:

# cat /etc/monit/monitrc
set daemon 20
set logfile syslog facility log_daemon

check process mydns with pidfile /var/run/mydns.pid
       start program = "/etc/init.d/mydns start"
       stop program = "/etc/init.d/mydns stop"
       if failed port 53 type udp then restart
       if failed port 53 type tcp then restart
       if 5 restarts within 5 cycles then timeout

Maybe the problem is, that mydns is still running, but just stops 
answering queries since of an unresolved bug!

Regards,
Samy

Martin Pala schrieb:
> This could be good to add. I think it can take ca. 4-8 hours. Patches 
> are welcomed ;)
>
> As workaround for such DNS servers it is possible to use generic 
> tcp/udp checks (don't specify the 'protocol' option).
>
> Martin
>
>
> On Sep 5, 2007, at 6:16 PM, monit user wrote:
>
> > 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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