Installing and configuring BIND9 DNS server

4 Responses

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1. sree says

   thanks a lot. This is very helpful. And more over could u help in configuring the reverse lookup …….

   2009/12/08, 11:17 pm
2. Rashid Iqbal says

   yes ..
   where is the reverse lookup zone file

   vi /var/named/2.168.192.in-addr.arpa.zone

   ***************
   $TTL 1d
   @ IN SOA ns.mydomain.com. hostmaster.mydomain.com. (
   2010031500 ; se = serial number
   3h ; ref = refresh
   15m ; ret = update retry
   3w ; ex = expiry
   3h ; min = minimum
   )

   @ IN NS ns.mydomain.com.

   ; private hosts, reverse lookup
   3 IN PTR ns.mydomain.com.

   2 IN PTR mainserver.mydomain.com.
   3 IN PTR centos.mydomain.com.
   4 IN PTR fish.mydomain.com.
   5 IN PTR whale.mydomain.com.
   6 IN PTR monkey.mydomain.com.
   7 IN PTR horse.mydomain.com.
   8 IN PTR cow.mydomain.com.

   ****************************************

   but configuring all this and all seems ok
   service starts properly but when i do nslookup get below mentioned error:

   [root@centos etc]# nslookup 192.168.12.2
   Server: 192.168.12.3
   Address: 192.168.12.3#53

   2.12.168.192.in-addr.arpa name = mainserver.mydomain.com.

   [root@centos etc]# nslookup mainserver
   Server: 192.168.12.3
   Address: 192.168.12.3#53

   ** server can’t find mainserver: NXDOMAIN

   2010/05/27, 4:41 am
3. Rashid Iqbal says

   here is my complete configuration files:
   vi /var/named/chroot/etc/named.conf
   options {
   directory “/var/named”;
   dump-file “data/cache_dump.db”;
   statistics-file “data/named_stats.txt”;
   memstatistics-file “data/named_mem_stats.txt”;
   version “currently unavailable”;
   };

   zone “mydomain.com” in {
   type master;
   file “mydomain.com.ns”;
   allow-update { none; };
   };

   zone “12.168.192.in-addr.arpa” in {
   type master;
   file “12-168-192.in-addr.arpa.ns”;
   allow-update { none; };
   };

   vi /var/named/chroot/var/named/mydomain.com.ns
   ****
   $TTL 1d

   @ IN SOA ns.mydomain.com. root (
   ;mydomain.com. IN SOA ns.mydomain.com. hostmaster.mydomain.com. (
   2010031500 ; se = serial number
   3h ; ref = refresh
   15m ; ret = update retry
   3w ; ex = expiry
   3h ; min = minimum
   )

   IN NS ns.mydomain.com.

   ; private hosts
   IN NS 192.168.12.3

   ns IN A 192.168.12.3
   fish IN A 192.168.12.4
   whale IN A 192.168.12.5
   monkey IN A 192.168.12.6
   horse IN A 192.168.12.7
   cow IN A 192.168.12.8
   mainserver IN A 192.168.12.2

   ***********************

   vi /var/named/chroot/var/named/12-168-192.in-addr.arpa.ns

   *******
   $TTL 1d
   @ IN SOA ns.mydomain.com. hostmaster.mydomain.com. (
   2010031500 ; se = serial number
   3h ; ref = refresh
   15m ; ret = update retry
   3w ; ex = expiry
   3h ; min = minimum
   )

   @ IN NS ns.mydomain.com.

   ; private hosts, reverse lookup
   3 IN PTR ns.mydomain.com.

   2 IN PTR mainserver.mydomain.com.
   3 IN PTR centos.mydomain.com.
   4 IN PTR fish.mydomain.com.
   5 IN PTR whale.mydomain.com.
   6 IN PTR monkey.mydomain.com.
   7 IN PTR horse.mydomain.com.
   8 IN PTR cow.mydomain.com.

   ****************************************

   the error is

   [root@centos etc]# nslookup 192.168.12.2
   Server: 192.168.12.3
   Address: 192.168.12.3#53

   2.12.168.192.in-addr.arpa name = mainserver.mydomain.com.

   [root@centos etc]# nslookup mainserver
   Server: 192.168.12.3
   Address: 192.168.12.3#53

   ** server can’t find mainserver: NXDOMAIN

   [root@centos etc]#

   kindly guide.

   Best Regards,

   2010/05/27, 4:42 am
4. amjad says

   Try fully qualified domain name like

   dig mainserver.mydomain.com

   I suspect, your have different search domain in /etc/resolv.conf.

   2010/05/27, 11:36 am