dns多台管理

#####dns的多台管理####

1.dns的配置

以下文件配置参照之前dns的方法（之前博客介绍过）：

[root@server named]# vim westos.com.zone

[root@server named]# vim /etc/named.conf

[root@server named]# vim /etc/named.rfc1912.zones

[root@server named]# vim /etc/resolv.conf

[root@server named]# systemctl restart named

[root@server named]#  dig www.westos.com

2.多台管理

主dns：

zone "westos.com" IN {

        type master;

        file "westos.com.zone";

        allow-update { none; };

        also-notify { 172.25.254.239; };

};

配置的其他台dns：

zone "westos.com" IN {

        type slave;

        masters { 172.25.254.139; };

        file "slaves/westos.com.zone";

        allow-update { none; };

};

每次更改dns配置时，只在主dns更改。

重启服务之后测试

$TTL 1D

@       IN SOA  dns.westos.com. root.westos.com. (

    此处每次更改dns要发生变化，否则不能同步## 2       ; serial

                                        1D      ; refresh

                                        1H      ; retry

                                        1W      ; expire

                                        3H )    ; minimum

        NS      dns.westos.com.

dns     A       172.25.254.139

www     A       172.25.254.139