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Old 04-03-2010, 10:42 PM   #1
Jezzirolk
LQ Newbie
 
Registered: Sep 2009
Posts: 21

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Post BIND9 fails with specific setup


when i try to set up bind9 to resolve the top level of the name it cant do it.
for current sake of arguement i have 4 servers on the network

192.168.0.200 diana.undernets.lan
192.168.0.201 jen.undernets.lan
192.168.0.202 amanda.undernets.lan
192.168.0.203 alex.undernets.lan

those are the IP addresses of the servers and their respective hostnames
so if i send a request for anything to just undernets.lan it will fail because there is no record for that. so i added this to the bottom of the zone record
Code:
               IN      CNAME   amanda
thinking that a blank would refer to the top of the zone

here is my named.conf.local which is called in my named.conf

Code:
zone "undernets.lan" {
        type master;
        file "/etc/bind/undernets.db";
};

zone "0.168.192.in-addr.arpa" {
        type master;
        file "/etc/bind/192.rev";
};
and here is undernets.db that works
Code:
@       IN      SOA     undernets.lan. root.undernets.lan. (
                            206         ;serial
                         604800         ;refresh
                          86400         ;retry
                        2419200         ;Expire
                         604800 )       ;TTL


        IN      NS      amanda.undernets.lan.

diana           IN      A       192.168.0.200
jen             IN      A       192.168.0.201
amanda          IN      A       192.168.0.202
alex            IN      A       192.168.0.203
;               IN      CNAME   amanda
if i remove the ; and make that not a comment then the whole server fails to resololve anything

is there a way to achieve what i am trying to do?
i want to be able to lookup undernets.lan and it give me the IP address of amanda.undernets.lan
 
Old 04-04-2010, 04:27 AM   #2
bathory
Guru
 
Registered: Jun 2004
Location: Piraeus
Distribution: Slackware
Posts: 10,975

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Hi,

A blank space in the beginning of a Resource Record gets replaced by the $ORIGIN (in your case undernets.lan). So what you actually do is:
Quote:
undernets.lan IN CNAME amanda
that is not correct.
What you can do is:
Code:
   IN A 192.168.0.202
Regards
 
Old 04-04-2010, 10:05 AM   #3
Jezzirolk
LQ Newbie
 
Registered: Sep 2009
Posts: 21

Original Poster
Rep: Reputation: 0
i tried what you suggested and put an entry in as

Code:
    IN A 192.168.0.202
and commented out the other entry with 192.168.0.202

but that fails to do anything i changed it in the zone file and in the reverse lookup file and restarted bind and still when i dig undernets.lan i get nothing in return. it says it has 0 answers. any ideas? my bind server is running on debian 5 if that is at all relevant
 
Old 04-04-2010, 10:22 AM   #4
bathory
Guru
 
Registered: Jun 2004
Location: Piraeus
Distribution: Slackware
Posts: 10,975

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Have you increased the serial:
Quote:
206 ;serial
before restarting named?

You can also use, if you want, the whole zone name instead of a blank space:
Code:
undernets.lan.  IN A 192.168.0.202
 
  


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