利用view实现智能DNS

环境：
DNS主服务器 192.168.88.7
DNS客户端1 192.168.88.17
DNS客户端2 172.16.1.37
DNS客户端3 10.0.0.7

DNS主服务：
#配置IP地址
ens32：192.168.88.7/24
ens33: 172.16.1.7/24
ip a a 10.0.0.7/24 dev ens32

yum install bind -y

#在 option前面加上
acl bejing{
  192.168.88.0/24;
};
acl suzhou {
  172.16.1.0/24;
};
acl othernet {
 any;
};


#在option里面，注释掉下面两行
// listen-on port 53 { 127.0.0.1; };
// allow-query   { localhost; };

创建view
view bjview {
 match-clients { beijing;};
 include "/etc/named.rfc1912.zones.bj";
};
view szview {
 match-clients { suzhou;};
 include "/etc/named.rfc1912.zones.sz";
};
view otherview {
 match-clients { othernet;};
 include "/etc/named.rfc1912.zones.other";
};

#实现区域配置文件
vim /etc/named.rfc1912.zones.bj
zone "." IN {
 type hint;
 file "named.ca";
};
zone "wswj.com" {
 type master;
 file "wswj.com.zone.bj";
};

vim /etc/named.rfc1912.zones.sz
zone "." IN {
 type hint;
 file "named.ca";
};
zone "wswj.com" {
 type master;
 file "wswj.com.zone.sz";
};

vim /etc/named.rfc1912.zones.other
zone "." IN {
 type hint;
 file "named.ca";
};
zone "wswj.com" {
 type master;
 file "wswj.com.zone.other";
};

chgrp named /etc/named.rfc1912.zones.bj
chgrp named /etc/named.rfc1912.zones.sz
chgrp named /etc/named.rfc1912.zones.other


#创建区域数据库文件
[root@localhost named]# vim wswj.com.zone.bj
$TTL 1D
@       IN SOA  master admin. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
        NS      master
master  A       192.168.88.7
www     A       192.168.88.111



[root@localhost named]# vim wswj.com.zone.sz
$TTL 1D
@       IN SOA  master admin. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
        NS      master
master  A       172.16.1.7
www     A       172.16.1.111

[root@localhost named]# vim wswj.com.zone.other
$TTL 1D
@       IN SOA  master admin. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
        NS      master
master  A       10.0.0.7
www     A       10.0.0.7


systemctl enable --now named.service

分别在客户端测试
dig www.wswj.com