centos7安装dnsmasq 配置内网域名解析

要在CentOS 7上安装和配置dnsmasq来进行内网域名解析，可以按照以下步骤进行操作：

1. 使用yum命令安装dnsmasq：`yum install dnsmasq -y` \[1\]
2. 修改dnsmasq配置文件：`vim /etc/dnsmasq.conf`，确保以下配置项正确设置：
- 指定上游DNS服务器：`resolv-file=/etc/resolv.dnsmasq.conf`
- 严格按照resolv-file文件中的顺序进行DNS解析：`strict-order`
- 开启本地hosts文件和缓存的域名解析：`no-resolv`
- 设置当前服务器的IP地址：`listen-address=192.168.119.12`
- 指定解析记录文件的目录：`conf-dir=/etc/dnsmasq.d`
- 添加自定义的DNS记录文件：`addn-hosts=/etc/dnsmasq.hosts` \[1\] \[2\] \[3\]
3. 创建并编辑上游DNS服务器配置文件：`vim /etc/resolv.dnsmasq.conf`，写入上游DNS服务器的IP地址，每行一个：

   nameserver 119.29.29.29
   nameserver 114.114.114.114
   nameserver 8.8.8.8
   nameserver 1.1.1.1

4. 创建并编辑自定义的DNS解析记录文件：`vim /etc/dnsmasq.hosts`，写入需要解析的域名和对应的IP地址，每行一个：

   123.206.16.61 pyyugo.cn
   123.206.16.61 goyugo.cn

5. 修改当前服务器的DNS域名服务器配置文件：`vim /etc/resolv.conf`，将nameserver指定为自建的dnsmasq服务器的IP地址：`nameserver 192.168.119.12`
6. 重启dnsmasq服务：`systemctl restart dnsmasq`
7. 确认域名解析是否生效：可以使用`nslookup`或`dig`命令来查询指定域名的解析结果，例如：`nslookup pyyugo.cn` \[1\]

通过以上步骤，你应该能够在CentOS 7上成功安装和配置dnsmasq来进行内网域名解析。
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