Re: sudo doing DNS lookup

[Steve Clark <sclark@xxxxxxxxxxxxx>]

On 12/10/2010 09:04 AM, John Doe wrote:

From: Steve Clark <sclark@xxxxxxxxxxxxx>
  

I have a confusing problem. I have two centos 5,5 boxes. Both have
sudo.i386                                1.7.2p1-9.el5_5               
    

installed
  

I am using the same sudoers file, but the one on box A keeps trying to do DNS 
lookups
while the one on box B does not. How do I disable this DNS lookup?
    

Do you have fqdn in sudoers?

  

No, thats the crazy part. I don't have that enabled and it still does the
DNS lookup. I tried turning it on to see what would happen and the
only thing different was it spit out:
$ sudo vi /etc/resolv.conf
sudo: unable to resolve host Z7070.netwolves.com
Vim: Caught deadly signal TERM

Vim: Finished.
Terminated

I finally killed it from another terminal cause it was taking so long.

Without the:
Defaults fqdn
it hangs for a long time, this is when I don't have connection to the net,
if I have connection there is just a slight pause while tries to do the DNS
lookup.

man sudoers:
"Beware that turning on fqdn requires sudo to make DNS
 lookups which may make sudo unusable if DNS stops
 working"

JD


      
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--
Stephen Clark
NetWolves
Sr. Software Engineer III
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.clark@xxxxxxxxxxxxx
http://www.netwolves.com

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