Configure the Slave DNS for example.

Slave DNS is the backup of master DNS. Automatically within a certain time slave DNS synchronizes with the Master DNS server.

1.vi /etc/named.conf

zone “example.com” IN {

type slave;

masters { 192.100.0.254; };

file “example.com.zone”;

};

named-checkconf command checks the syntax for /etc/named.conf file.

service named start | restart