1、安装 dnsmasq

yum install -y dnsmasq

2、修改配置

# 备份dnsmasq.conf
cp /etc/dnsmasq.conf /etc/dnsmasq.conf.bak
# 清空文件内容
echo > /etc/dnsmasq.conf

# 写入以下内容
resolv-file=/etc/resolv.dnsmasq.conf
strict-order
server=114.114.114.114
# listen-address写自己的服务器IP
listen-address=192.168.10.200,127.0.0.1
addn-hosts=/etc/dnsmasq.hosts
cache-size=10240
bogus-nxdomain=114.114.114.114
log-queries
log-facility=/var/log/dnsmasq/dnsmasq.log
conf-dir=/etc/dnsmasq.d
conf-dir=/etc/dnsmasq.d,.bak
conf-dir=/etc/dnsmasq.d/,*.conf
conf-dir=/etc/dnsmasq.d,.rpmnew,.rpmsave,.rpmorig

3、创建日志目录

mkdir /var/log/dnsmasq/

4、修改 resolv.dnsmasq.conf

vim /etc/resolv.dnsmasq.conf

# 内容如下
nameserver 114.114.114.114
nameserver 1.0.0.1
nameserver 1.1.1.1

5、添加 hosts

# 添加自己要解析的IP和域名
vim /etc/dnsmasq.hosts
192.168.10.33    www.testdns.com

6、启动服务并加入开机启动

systemctl start dnsmasq
systemctl enable dnsmasq

7、客户端机器要通过指定的域名正常访问，需要将本机的DNS手动设置为搭建dnsmasq的服务器IP上

linux设置DNS

vim /etc/resolv.conf
nameserver 192.168.10.200

mac设置DNS(下面是脚本内容)

#!/usr/bin/env bash

networksetup -setdnsservers Wi-Fi 192.168.10.200

windows设置DNS(下面是脚本内容)，可以手动设置，也可以执行脚本

@echo off

%1 mshta vbscript:CreateObject("Shell.Application").ShellExecute("cmd.exe","/c %~s0 ::","","runas",1)(window.close)&&exit
cd /d "%~dp0"

netsh interface ipv4 set dns name="以太网" source=static addr=172.17.73.120 register=PRIMARY
netsh interface ipv4 set dns name="WLAN" source=static addr=172.17.73.120 register=PRIMARY

ipconfig /all

::pause