1. /etc/resolv.conf 文件记录了Linux下的DNS服务器, 但是这个文件在重启networking 或者计算机重启后会丢失.
2. 要解决这个问题可以安装 resolvconf这个软件.
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apt-cache search resolvconf
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apt-get install resolvconf
3. 添加配置文件
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vim /etc/resolvconf/resolv.conf.d/base
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#输入DNS
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nameserver 8.8.8.8
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nameserver 114.114.114.114
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vim /etc/default/resolfconf
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#输入
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TRUNCATE_NAMESERVER_LIST_AFTER_LOOPBACK_ADDRESS=no
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4. 执行命令
5. 然后重启networking ，发现/etc/resolv.conf还在,说明该方法有效.
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service networking restart
6. 开机自启动.
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systemctl enable resolvconf.service
7.
更多信息，请man resolvconf.
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