non-existent domain

[Junxiu Liu]

Hi,

One of our caching-only DNSs stops working after reboot. When I tried
nslookup command, error messages showed up as follows:

Can't find server name for address "DNS-IP-ADDRESS" : non-existent
domain.
DNS Lookup (GetHostInfoByAddr) Unsuccesssful
DNS Lookup (GetHostInfoBy) Successsful

So, I edited the file /etc/resolv.conf on a client machine, changing the
nameserver's IP address into the nameserver's hostname. When I called
nslookup again, no error came out. I think that such modification on
/etc/resolv.conf is not recommended.

Any comment will be much appreciated.


Junxiu Liu

[Joseph S D Yao]

Post by Junxiu Liu
One of our caching-only DNSs stops working after reboot. When I tried
Can't find server name for address "DNS-IP-ADDRESS" : non-existent
domain.
DNS Lookup (GetHostInfoByAddr) Unsuccesssful
DNS Lookup (GetHostInfoBy) Successsful
So, I edited the file /etc/resolv.conf on a client machine, changing the
nameserver's IP address into the nameserver's hostname. When I called
nslookup again, no error came out. I think that such modification on
/etc/resolv.conf is not recommended.
Any comment will be much appreciated.

If you have a hostname in resolv.conf, how does the system first find
the IP address for this host name???

I thnk that you would be better off leaving the IP address in your
resolv.conf file, and getting the reverse DNS fixed for that address.

--
Joe Yao ***@cospo.osis.gov - Joseph S. D. Yao
COSPO/OSIS Computer Support EMT-B
-----------------------------------------------------------------------
This message is not an official statement of COSPO policies.

[Royans Tharakan]

the logical answer to this puzzle is that when the machine rebooted it
changed its ip address somehow. the new name and ip might be in the
hosts file. now when the machine restarted, it could not get to the
old ip, but could get to the hostname (through hosts) file.

Post by Joseph S D Yao

Post by Junxiu Liu
One of our caching-only DNSs stops working after reboot. When I tried
Can't find server name for address "DNS-IP-ADDRESS" : non-existent
domain.
DNS Lookup (GetHostInfoByAddr) Unsuccesssful
DNS Lookup (GetHostInfoBy) Successsful
So, I edited the file /etc/resolv.conf on a client machine, changing the
nameserver's IP address into the nameserver's hostname. When I called
nslookup again, no error came out. I think that such modification on
/etc/resolv.conf is not recommended.
Any comment will be much appreciated.

If you have a hostname in resolv.conf, how does the system first find
the IP address for this host name???
I thnk that you would be better off leaving the IP address in your
resolv.conf file, and getting the reverse DNS fixed for that address.
--
COSPO/OSIS Computer Support EMT-B
-----------------------------------------------------------------------
This message is not an official statement of COSPO policies.