[Nagiosplug-devel] check_dns problem

[Jeremy T. Bouse]

	The other problem I've found with check_dns is because of it's
dependency on the nslookup command. As of BIND9 the use of nslookup is
deprecated in favor of using host or dig... As I'm working to make the
plugins work for IPv4 and IPv6 and be AF-independent I've noticed that
BIND8's nslookup doesn't even know what to do if you give it an IPv6
address (ie- 3ffe:501:4819:2000:210:f3ff:fe03:4d0 ) and BIND9's will
return a SERVFAIL as it tries to lookup using bitstring notation with
the ip6.arpa TLD rather than nibble notation...

	I will note that I do have check_dns working fine if you give
it IPv6 DNS server to query against for an IPv4 host or address... Just
something anyone wanting to spend time working on the check_dns plugin
should prolly be aware of for compatibility and portability...

	Jeremy

On Thu, Dec 05, 2002 at 10:21:49PM -0500, Karl DeBisschop wrote:
> On Wed, 2002-11-27 at 11:21, James Fidell wrote:
> > When started, nslookup tries to look up the hostname of the server
> > being used for queries.  In the general case this is fine.  However,
> > if it is being used to do a lookup on a server which doesn't allow
> > recursive queries and isn't authoritative for its own reverse address
> > then the lookup times out and check_dns reports an error when there
> > may be none.
> > 
> > I've hacked check_dns.c to use "host" for the moment (since nslookup
> > is deprecated anyway).  Is there an alternative work-around for this
> > problem (I guess check_dns should really do it's own DNS check rather
> > than relying on any external application).
> 
> Did you try check_dig?
> 
> -- 
> Karl DeBisschop <karl at debisschop.net>
> 
> 
> 
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