These are the steps to configure a master-slave DNS
Master : 192.30.164.122
Slave: 216.224.181.98
MASTER
-------------
>> yum install bind [ to install bind software ]
>> vim "/etc/named.conf" : Add the following lines
acl "trusted" {
192.30.164.122; #ns1
216.224.181.98; #ns2
};
options {
listen-on port 53 { 192.30.164.122; };
> Below allow-query
recursion yes;
allow-recursion { trusted; };
allow-transfer { none; };
forwarders {
8.8.8.8;
8.8.4.4;
};
> At the bottom
zone "goddu.com" {
type master;
file "db.goddu.com";
allow-transfer { 216.224.181.98; };
};
>> :wq
>> vim "/var/named/db.goddu.com" : Enter the following
$TTL 1D
@ IN SOA ns1.goddu.com. admin.goddu.com. (
0 ; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
IN NS ns1.goddu.com.
IN NS ns2.goddu.com.
ns1.goddu.com. IN A 192.30.164.122
ns2.goddu.com. IN A 216.224.181.98
>> :wq
>> change nameserver to VPS IP
SLAVE
---------
>> ssh to slave VPS
>> vim "/etc/named.conf" : Add the following lines
zone "goddu.com" {
type slave;
file "db.goddu.com";
allow-transfer { 192.30.164.122; };
masters { 192.30.164.122; };
};
>> :wq
>> service named restart
>> dig ns1.goddu.com
>> dig ns2.goddu.com
NB: Make sure that the /var/named has got writing permission.If not, give permission using chmod command.
