On Fri, Dec 10, 2010 at 2:23 PM, Steve Clark sclark@netwolves.com wrote:
On 12/10/2010 10:40 AM, Tom H wrote: On Fri, Dec 10, 2010 at 8:43 AM, Steve Clark sclark@netwolves.com wrote:
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 both hosts have their hostnames in "/etc/hosts"?
Do both hosts have "hosts: files dns" in "/etc/nsswitch.conf"?
I have resolved the problem as far why they behaved differently. Someone had put an entry in /etc/resolv.conf when normally we run our own nameserver at 127.0.0.1. Putting a hostname and address in the /etc/hosts also fixed the problem.
But I still don't understand why it wants to do a DNS lookup when I don't have Defaults fqdn in the sudoers file.
A WAG: Since sudo rights are assigned on a box by box basis (unless you use "ALL"), sudo has to check on which box you are running it.