dns分区分时解析

// 主配置文件 named.conf
zone "example.com" {
    type master;
    file "/var/named/example.com.zone";
    allow-transfer { 192.168.1.1; };
};

zone "asia.example.com" {
    type master;
    file "/var/named/asia.example.com.zone";
    allow-transfer { 192.168.1.2; };
};

zone "europe.example.com" {
    type master;
    file "/var/named/europe.example.com.zone";
    allow-transfer { 192.168.1.3; };
};

// 区域文件 /var/named/example.com.zone
$TTL 86400
@       IN      SOA     ns1.example.com. admin.example.com. (
                        2023010101      ; Serial
                        3600            ; Refresh
                        1800            ; Retry
                        604800          ; Expire
                        86400           ; Minimum TTL
                        )
        IN      NS      ns1.example.com.
        IN      NS      ns2.example.com.

ns1     IN      A       192.168.1.1
ns2     IN      A       192.168.1.2
www     IN      A       192.168.1.10

// 区域文件 /var/named/asia.example.com.zone
$TTL 86400
@       IN      SOA     ns3.example.com. admin.example.com. (
                        2023010101      ; Serial
                        3600            ; Refresh
                        1800            ; Retry
                        604800          ; Expire
                        86400           ; Minimum TTL
                        )
        IN      NS      ns3.example.com.
        IN      NS      ns4.example.com.

ns3     IN      A       192.168.1.3
ns4     IN      A       192.168.1.4
www     IN      A       192.168.1.20