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Full Discussion: DNS configuration problem
Special Forums IP Networking DNS configuration problem Post 100561 by RTM on Tuesday 28th of February 2006 11:20:46 AM
Old 02-28-2006
Quote:
Is it possible to configure a sub domain in which the name of this sub domain is same as a server of it's parent domain? e.g. A sub domain "sub.example.com" is configured using a zone file and there is also a "A" record, "sub" in "example.com" zone file.
Yes, you can have a sub-domain such as sub.example.com but you don't need to associate an "A" record with it.

You can add sub-domain delegations with the following type of command in the db.example.com zone file

Code:
sub    IN NS your-master-dns-servername.example.com.

Then, create a db.sub.example.com zone file which contains the names of servers in the sub.example.com sub-domain (the same as you would as if they were part of example.com).

Add your sub-domain to your conf file. Example, if you have in your named.conf
Code:
include "conf.example.com" ;

then in your conf.example.com file, you would need to list both the main zone
Code:
zone "example.com" in
        {
             type master;
             file "maps/example.com/db.example.com" ;
};

AND your sub-domains

Code:
zone "sub.example.com" in
       {
           type master;
           file "maps/example.com/db.sub.example.com" ;
};

All you are really doing is splitting it up to make it easier for you - DNS could have it all in one file with no issues.
 

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ldns-notify(1)						      General Commands Manual						    ldns-notify(1)

NAME
ldns-notify - notify DNS servers that updates are available SYNOPSIS
ldns-notify [options] -z zone servers DESCRIPTION
ldns-notify sends a NOTIFY message to DNS servers. This tells them that an updated zone is available at the master servers. It can perform TSIG signatures and it can add a SOA serial number of the updated zone. If a server already has that serial number it will disregard the message. OPTIONS
-z zone The zone that is updated. -h Show usage and exit -v Show the version and exit -s serial Append a SOA record indicating the serial number of the updated zone. -p port Use port as destination port (default the DNS port 53) for the UDP packets. -y key:data Use the given TSIG key and base64-data to sign the NOTIFY. Uses the hmac-md5 algorithm. -d Print verbose debug information. The query that is sent and the query that is received. -r num Specify the maximum number of retries before notify gives up trying to send the UDP packet. EXIT CODE
The program exits with a 0 exit code if all servers replied an acknowledgement to the notify message, and a failure exit code otherwise. AUTHOR
Written by the ldns team as an example for ldns usage. REPORTING BUGS
Report bugs to <ldns-team@nlnetlabs.nl>. COPYRIGHT
Copyright (C) 2005 NLnet Labs. This is free software. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR- POSE. 9 Jan 2007 ldns-notify(1)
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