check_dns plugin failures

[Dave Augustus]

Hello Marc,

OK, I mistakenly entered the wrong command in the email. The correct one
is as follows:

./check_dns -H mail.kcm.org -s 67.18.139.41 -a 67.18.139.104


When I run this from the CLI, it fails ALWAYS. However, if I run it like
this:

strace -f ./check_dns -H mail.kcm.org -s 67.18.139.41 -a 67.18.139.104

I get valid responses embedded in the strace output like this:

mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb7df7000
write(1, "DNS OK: 0.257 seconds response t"..., 92DNS OK: 0.257 seconds
response time kcm.org returns 67.18.139.103|time=0.256953s;;;0.000000

It appears that check_dns needs something in its environment that it is
not getting.( That is just a guess on my part )

Any ideas?

Dave


On Mon, 2005-08-08 at 09:49 -0500, Marc Powell wrote:
> > Sent: Friday, August 05, 2005 5:59 PM
> > To: nagios-users at lists.sourceforge.net
> > Subject: [Nagios-users] check_dns plugin failures
> > 
> > Hello fellow listers!
> > 
> > I am having difficulty getting valid responses from the check_dns
> > plugin. Using both the 1.3 and the new 1.4 series plugins, I get a
> valid
> > response one out of every 10 times, making the whole reason for
> > monitoring useless.
> > 
> > Any ideas?
> > 
> > Specs:
> > nagios-plugins-1.4-1 on CentOS 4 (RHEL 4)
> > checking a BIND 9 server on CentOS 4 (RHEL 4)
> > 
> > 
> > --check command is :
> > ./check_dns -H mail.kcm.org -s 67.18.139.41 -s 67.18.139.104
> 
> If I missed a response to this already I apologize. I think you mean to
> be using --
> 
> ./check_dns -H mail.kcm.org -s 67.18.139.41 -a 67.18.139.104
> 
> Only 1 -s parameter is honored.
> 
> --
> Marc




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