DNS plugin problem

[Dan Hopkins]

> -----Original Message-----
> From: Andy Smith [mailto:andy at strugglers.net]
> Sent: 24 January 2005 18:14
> To: nagios-users at lists.sourceforge.net
> Subject: Re: [Nagios-users] DNS plugin problem
> 
> 
> On Sun, Jan 23, 2005 at 03:14:02PM -0500, Skylar Thompson wrote:
> > I'm using the check_dns plugin to monitor our BIND DNS 
> servers. Many times
> > a day, the plugin marks one BIND server as down with this 
> error message:
> > 
> > SERVICE ALERT: hopper;DNS;CRITICAL;HARD;3;DNS CRITICAL - 
> '/usr/bin/nslookup
> > -sil' output parsing exited with no address
> > 
> > It then comes back up about 10 minutes later:
> > 
> > SERVICE ALERT: hopper;DNS;OK;HARD;3;DNS ok - 1 seconds 
> response time,
> > Address(es) is/are 216.109.118.74
> 
> Does the problem go away if you modify your check to use check_dig
> instead?
> 
> (nslookup is deprecated, although that probably isn't your problem
> let's stop using it anyway)

<snip>

I doubt it's Skylar's choice to use nslookup - the problem is that the
standard Nagios DNS plugin is dreadful. It parses nslookup output, badly,
and will either work, display parsing errors, or even more fun just plain
segfault.

(this is the 1.3 plugin version, I'd hope it's been corrected in 1.4, but
I've not looked recently)

Dan





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