服務端設置：
1、先下載伯克利軟件
[root@localhost ~]# yum install -y bind bind-chroot
2、修改配置文件
3、設置解析文件
[root@localhost ~]# vim /var/named/jd.com.zone
$TTL 600
@ IN SOA @ root (20180518 1H 15M 1W 1D)
@ IN NS dns
dns IN A 192.168.1.182
www IN A 1.2.3.4
ftp IN A 5.6.7.8
4、啓動DNS服務
[root@localhost ~]# systemctl start named
[root@localhost ~]# systemctl enable named
客戶端配置
1、修改本地DNS解析方式
2、修改後的圖