Linux服务器配置DNS解析
<p class="cye-lm-tag"><strong><span class="cye-lm-tag">概述<br><br></span></strong></p><p>
<span class="cye-lm-tag">DNS（Domain Name System，域名系统）</span><span class="cye-lm-tag"><span class="cye-lm-tag"><br><span class="cye-lm-tag">DNS的作用，简单的说：就是把我们输入的网站域名翻译成IP地址的系统。</span></span></span><span class="cye-lm-tag"><br></span><span class="cye-lm-tag">本文建立在已搭建好DNS服务器，这里讨论为linux机器配置DNS服务器，使用户可以流畅使用Internet<br></span><span class="cye-lm-tag"><br></span><span class="cye-lm-tag">以下介绍linux服务器配置DNS解析的三种方法：</span></p>
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<p class="cye-lm-tag"><strong><span class="cye-lm-tag">1、本地hosts文件</span></strong></p>
<p class="cye-lm-tag"><span class="cye-lm-tag">编辑<strong>/etc/hosts</strong>文件，利用hosts自动解析域名到ip</span></p>
<p class="cye-lm-tag"> </p>
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<pre>vim /etc/hosts<br>123.<span style="color: rgba(128, 0, 128, 1)">123.123</span>.<span style="color: rgba(128, 0, 128, 1)">123</span> www.baidu.com<br>124.<span style="color: rgba(128, 0, 128, 1)">123.123</span>.<span style="color: rgba(128, 0, 128, 1)">123</span> www.qq.com</pre>
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<p class="cye-lm-tag"><strong><span class="cye-lm-tag">2 、<strong><span class="cye-lm-tag"><strong><span class="cye-lm-tag"><strong><span class="cye-lm-tag">系统默认DNS配置</span></strong></span></strong></span></strong></span></strong></p>
<p class="cye-lm-tag"><span class="cye-lm-tag">编辑DNS客户端配置文件：<strong>/etc/resolv.conf</strong></span></p>
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<pre>vim /etc/resolv.conf<br>nameserver <span style="color: rgba(128, 0, 128, 1)">114.114</span>.<span style="color: rgba(128, 0, 128, 1)">114</span>.114<br>nameserver <span style="color: rgba(128, 0, 128, 1)">8.8</span>.<span style="color: rgba(128, 0, 128, 1)">8.8</span></pre>
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<p class="cye-lm-tag"><strong><span class="cye-lm-tag">3 、网卡配置文件</span></strong></p>
<p class="cye-lm-tag"><span class="cye-lm-tag">假设网卡名为eth0，编辑网卡配置文件，增加DNS规则：</span></p>
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<pre>vim /etc/sysconfig/network-scripts/ifcfg-eth0 <br># 添加规则<br>DNS1=<span style="color: rgba(128, 0, 128, 1)">114.114</span>.<span style="color: rgba(128, 0, 128, 1)">114</span>.114<br>DNS2=<span style="color: rgba(128, 0, 128, 1)">8.8</span>.<span style="color: rgba(128, 0, 128, 1)">8.8<br><br></span><span style="color: rgba(0, 0, 0, 1)">
service network restart #重启网络使配置生效</span></pre>
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<p> </p>
<p class="cye-lm-tag"><strong><span class="cye-lm-tag"> DNS域名解析优先级</span></strong></p>
<p class="cye-lm-tag"><span class="cye-lm-tag">本地Hosts > 网卡配置 > 系统默认DNS配置</span></p>
<p class="cye-lm-tag"> </p>
<p class="cye-lm-tag"><strong><span class="cye-lm-tag"> 国内优秀DNS地址推荐</span></strong></p>
<p class="cye-lm-tag"> 114 DNS：</p>
<p class="cye-lm-tag"><span class="cye-lm-tag">主备 114.114.114.114/114.114.115.115</span></p>
<h3>Google DNS：</h3>
<p>
<span class="cye-lm-tag">主备 ip8.8.8.8/8.8.4.4</span><br><span class="cye-lm-tag">阿里 DNS：<br></span><span class="cye-lm-tag">主备 223.5.5.5/223.6.6.6</span></p>
<h3>OneDNS：</h3>
<h3><span class="cye-lm-tag">主备 ip 117.50.11.11/117.50.22.22</span></h3><p>喜欢这篇文章？欢迎打赏~~</p><p><img src="https://img2020.cnblogs.com/blog/1313648/202012/1313648-20201207210415386-746901846.png" alt="" loading="lazy"></p><p> </p><br><br>
来源：https://www.cnblogs.com/cangqinglang/p/13343469.html
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