DNS WARNING - nslookup returned error status

[Jason Byrns]

lists wrote:
> I just had a go at your suggestion, and it seems to not be the case for my install. I
> recompiled the plugins and installed them. In the "make check" portion - everything
> seems to be fine. I am wondering if it is my DNS configuration. I know my servers are in
> fact up, and one of them is a non-recursive resolver - however I just have it checking a
> domain it has authority for. And this issue is happening with all my DNS servers (some
> of which are recursive resolvers) - so I do not think it is that.
> 
> Any other pointers?

What are the exact specs of this server?  (As in: Who makes the OS, and 
what version?  What version of the kernel?  What version of Nagios and 
the plugins?)

What is the exact command syntax you use when checking DNS?  Have you 
tried running it manually from the command line?  If so, what were the 
results?

Does the DNS check fail every time?  My situation was intermittent 
failure -- sometimes the check worked, sometimes not.  This was all 
specific to a bug in Redhat Enterprise Linux 4.  (I use the free RHEL 
clone, CentOS)

Generally, the more details you can provide, the better.  Also, I 
recommend sending your replies back to the Nagios list, and not just to 
me directly.  (I replied to the list to share the info with others.)

>>I saw this same warning on a new Nagios server.  If you are like me, it 
>>was related to an apparent bug in the Redhat RHEL kernel.  (I think it 
>>was the kernel, anyway)
>>
>>Regardless, the solution is to download and compile the check_dns plugin 
>>from source.  If it detects it is on a system with the problem, it 
>>implements a workaround.  My system works fine again after doing this.



-- 
Jason Byrns
Production Manager
System Administrator
http://www.MicroLnk.com/
402-328-8600 ext. 653


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