[CentOS-mirror] DNS servers

Sander Hoentjen - Oxilion S.Hoentjen at oxilion.nl
Sun Jul 26 12:50:57 UTC 2009

Hi all,

Sometimes our caching nameservers have trouble with mirror.centos.org. The reason is probably because pdns2.centos.org is down, and pdns3.centos.org is answering queries from the wrong ip-address it seems:

$ host -t NS mirror.centos.org
mirror.centos.org name server pdns2.centos.org.
mirror.centos.org name server pdns1.centos.org.
mirror.centos.org name server pdns3.centos.org.
$ host mirror.centos.org pdns1.centos.org.
Using domain server:
Name: pdns1.centos.org.

mirror.centos.org has address
$ host mirror.centos.org. pdns2.centos.org.
;; connection timed out; no servers could be reached
$ host mirror.centos.org. pdns3.centos.org.
;; reply from unexpected source:, expected
;; reply from unexpected source:, expected
;; connection timed out; no servers could be reached

The last one can easily be solved by setting local-address.

Hope this info is useful to anyone.

Met vriendelijke groet,
Sander Hoentjen
System & Support engineer

E info at oxilion.nl
I www.oxilion.nl

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