CentOS7.4 配置DNS服务器

yum install -y bind*

/etc/named.conf #主配置文件
/var/named/ #解析数据库文件目录
/etc/named.rfc1912.zones #默认的解析区域文件

#以下修改只是我做改动的地方 
vim /etc/named.conf 
options {
       
#listen-on port 53 { 127.0.0.1; }; 注释掉该行表示在所有接口IP启用53端口的监听
       
#listen-on-v6 port 53 { ::1; }; 关闭IPv6的监听
       
 directory       "/var/named";
        
dump-file       "/var/named/data/cache_dump.db";
        
statistics-file "/var/named/data/named_stats.txt";
        
memstatistics-file "/var/named/data/named_mem_stats.txt";
       
 recursing-file  "/var/named/data/named.recursing";
        
secroots-file   "/var/named/data/named.secroots";
        
#allow-query     { localhost; }; 允许所有主机进行DNS查询，默认只允许本地查询 
zone "example.com" IN { 
type master;  
file "example.com.zone"； #如果不加绝对路径的话，默认会将配置文件认为是在/var/named目录内
 }；         
#include "/etc/named.rfc1912.zones"; 注释掉该行
include "/etc/named.root.key";

cd /var/named/ 
cp named.localhost example.com.zone #通过默认的区域文件创建一个
vim example.com.zone 
$TTL 1D
@IN SOAexample.com dns.example.com. 
                                                 (
0; serial 
                                                 1D; refresh
                                                 1H; retry 
                                                 1W; expire 
                                                 3H ); minimum 
@        INNSdns.example.com. 
dnsINA172.16.104.123
wwwINA172.16.104.123

systemctl restart named
[root@localhost named]# systemctl status named #查看一下状态 
cat /etc/resolv.conf #确定DNS地址 
# Generated by NetworkManager 
nameserver 172.16.104.123           
[root@localhost ~]# nslookup www.example.com 
Server:172.16.104.123 
Address:172.16.104.123#53 
Name:www.example.com 
Address: 172.16.104.123