Centos7安装配置DNS服务器

>>>安装bind服务器

yum install -y bind*

>>>启动DNS服务

systemctl start named

systemctl enable named

>>>修改主配置文件

vi /etc/named.conf

listen-on port 53 { any; }; #127.0.0.1修改为any

allow-query { any; }; # localhost修改为any

>>>添加域名解析区域

vi /etc/named.rfc1912.zones

zone "abc.com" IN {
　　type master;
　　file "abc.com.zone";
　　allow-update { none; };
};

>>>添加域名及A记录

vi /var/named/abc.com.zone

$TTL 3H
@       IN SOA  @ abc.com. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
         NS      @
         A       1.2.3.4
www      A       2.3.4.5

域名abc.com绑定ip:1.2.3.4

www子域名绑定ip:2.3.4.5

>>>添加反向解析

添加反向解析区域

vi /etc/named.rfc1912.zones

zone "3.2.1.in-addr.arpa" IN {
　　type master;
　　file "abc.com.zone";
　　allow-update {none; };
};

添加PTR记录

vi /var/named/abc.com.zone

$TTL 3H
@       IN SOA  @ abc.com. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
         NS      @
         A       1.2.3.4
www      A       2.3.4.5
4　　　　 PTR     abc.com.

>>>重启DNS服务，使配置生效

systemctl restart named

>>>解析测试

dig abc.com @x.x.x.x # x.x.x.x为DNS服务器IP

dig www.abc.com @x.x.x.x

dig -x 1.2.3.4 @x.x.x.x # 测试DNS反向解析

代码改变一切！