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）：

[[email protected] named]# vim westos.com.zone

[[email protected] named]# vim /etc/named.conf

[[email protected] named]# vim /etc/named.rfc1912.zones

[[email protected] named]# vim /etc/resolv.conf

[[email protected] named]# systemctl restart named

[[email protected] 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