resolv.conf -- systems ignore secondary & tertiary nameservers

Issues related to configuring your network
Post Reply
rotorboy
Posts: 27
Joined: 2005/03/03 23:02:04

resolv.conf -- systems ignore secondary & tertiary nameserve

Post by rotorboy » 2011/02/10 16:20:10

Greetings.
I'm seeing a strange problem. I have a number of CentOS servers with latest 5.x
I have 3 nameservers in the resolv.conf files. All 3 nameservers test out fine when checking for domain lookups.
I'm having some trouble with ns1 and shut it down.l None of the CentOS machines fail over to the ns2 & ns3 entries. Basically everything stops resolving even though the other 2 nameservers are alive and well.

Why would this happen?

pschaff
Retired Moderator
Posts: 18276
Joined: 2006/12/13 20:15:34
Location: Tidewater, Virginia, North America
Contact:

Re: resolv.conf -- systems ignore secondary & tertiary nameservers

Post by pschaff » 2011/02/11 03:23:31

Does it actually fail, or just take a long time to time out? Best potential explanation I could find is [url=https://bugzilla.redhat.com/show_bug.cgi?id=570851]this bugzilla report[/url]. A workaround would probably be to rewrite /etc/resolv.conf without the failed DNS nameserver entry.

Post Reply

Return to “CentOS 5 - Networking Support”