ndc stats problem on busy DNS servers

Mark.Andrews at nominum.com Mark.Andrews at nominum.com
Wed May 9 23:46:00 UTC 2001


	8.2.4 is also your friend.

> 
> "Truss" is your friend.
> 
> 
> - Kevin
> 
> Alexis Oosterhoff wrote:
> 
> > I am developing an in-house system for monitoring DNS caching server within
> > our organisation. We're running  8.2.3-REL on a Solaris 2.6 system.
> >
> > I have 9 servers which are dumping their stats to named.stats on an hourly
> > basis, using a call to "ndc stats". Most of the machines are dumping the
> > stats reliably, however, on two of our busier caching servers (approx. 400
> > lookups/sec), "ndc stats" works some times and not others.
> >
> > Bind is running as follows:
> >
> >     named -u nobody -g nobody -v /etc/named.conf
> >
> > and ndc access is configured with the following controls statement:
> >
> >     controls { unix "/var/named/ndc.d/ndc" perm 0774 owner 0 group
> > 600001; };
> >
> > The error message being displayed when the "ndc stats" call fails is:
> >
> >     cannot open stat file, "named.stats"
> >
> > The "named.stats" file is created, owned by user "nobody" but with null fil
> e
> > size.
> >
> > If this were happening on every call to "ndc stats", I'd say it was a
> > configuration problem. However, as it's happening irregularly (no
> > discernable pattern, maybe works 30% of the time), I'm wondering if there
> > are issues related to system sizing (though the machine is running with dua
> l
> > 300MHz CPUs and 2GB RAM), or in running in a chown-ed environment.
> >
> > Any thoughts would be appreciated.
> >
> > Alexis Oosterhoff
> 
> 
> 
> 
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com


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