DNS (bind) query problem

Ammad · 11-18-2009, 02:58 AM

Hi,

i have problem with linux dns (bind-9.3.4-9.P1.el5), i have updated a CNAME on live server, but the changes are note reflecting on local linux dns server, whereas local windows is display correct records.

even though i have restarted named, and nscd -i hosts, rndc flush.

i have verified this through several other dns servers.

any suggestion ?

bathory · 11-18-2009, 04:18 AM

What is the local linux dns server? A slave to the "live" dns server?
If that's the case make sure that your live server sends notifies to the slaves and there is not a firewall problem in between.
Check /etc/resolv.conf to see if you have the live server before any other dns.
Also disable nscd if it's running on local dns, since you don't need it.

Regards

eth1 · 11-18-2009, 04:22 AM

If the local DNS server is merely a caching nameserver then check the nameserver entries in /etc/resolv.conf

The name servers you're using as resolvers aren't getting the propagated information. You can use alternate OpenDNS servers from opendns.com etc.

Ammad · 11-18-2009, 04:24 AM

its simple dns, not a a slave for that domain. as i make changes to live dns, it reflects to Windows DNS (when i query to windows dns it have a correct answer, also not a slave). where as linux dns stored in some where.

now i stopped it nscd but still have same IP address of record, instead of updated CNAME.

thanks for response.

bathory · 11-18-2009, 04:54 AM

Are you using forwarders on local server? Could you post /etc/named.conf?
Also /etc/resolv.conf

Ammad · 11-18-2009, 05:03 AM

i have verified this from opendns.com server. and getting correct response. when i do same from local dns server using nslookup and setting server to local linux server it have old bad correct.

Ammad · 11-18-2009, 06:14 AM

i think it realted to caching on top-level-domain, which will take about 8 hours.

i will update you on this in next eight hours