• 配置轉發DNS伺服器10.0.0.103

vim /etc/named.conf
options {
//      listen-on port 53 { 127.0.0.1; };
//      allow-query     { localhost; };
        forward         first;
        forwarders      {10.0.0.101;}; 
}
        dnssec-enable no;
        dnssec-validation no;  

systemctl restart named

• 配置主伺服器 10.0.0.101

[root@localhost ~]# vim /etc/named.conf
options {
//      listen-on port 53 { 127.0.0.1; };
//      allow-query     { localhost; };
}

[root@localhost ~]# vim /etc/named.rfc1912.zones
zone "magedu.org" IN {
        type master;
        
 
file "magedu.org.zone";                                                                                                                 
};

[root@localhost ~]# vim /var/named/magedu.org.zone
$TTL 1D
@       IN SOA master admin.magedu.org. ( 20201231 1H 10M 3D 12H )
           NS  ns1
ns1        A   
 
10.0.0.101            
www        A   10.0.0.103
 
[root@localhost named]# chmod 640 magedu.org.zone
[root@localhost named]# chown .named magedu.org.zone

systemctl restart named

• 客戶端測試

dig www.magedu.org @10.0.0.103