第一步：下载
Yum install bing bing-utils -y
第二步：修改named.conf
Vim /etc/named.conf
listen-on port 53 { any; };
allow-query { any; };
第三步：修改/named.rfc1912.zones
Vim /etc/named.rfc1912.zones
正向解析
zone "zxw.com" IN {
type master;
file "zxw.com.zone";
allow-update { none; };
反向解析
zone "126.168.192.in-addr.arpa" IN {
type master;
file "xw.com.zone";
allow-update { none; };
第四步：修改
正向
Cp -a named.localhost zxw.com.zone
反向
Cp -a named.loopback xw.com.zone
第五部：配置正反解析
正向
Vim zxw.com.zone
www IN A 192.168.126.10
sss IN A 192.168.126.10
反向
Vim xw.com.zone
6 IN PTR www.xw.com
8 IN PTR sss.xw.com
第六步：重启
Systemctl restart named
Systemctl ststus named （查看）
第七步：验证
Nslookup 192.168.126.10
Nslookup www.xw.com
Vim /etc/hosts
; generated by /usr/sbin/dhclient-script
search localdomain
nameserver 192.168.160.129