CentOS 7 配置静态IP
<p>1.配置前，让<span lang="EN-US">CentOS 7自动获取一个<span lang="EN-US">IP地址；</span></span>使用的命令：<span style="background-color: rgba(0, 255, 0, 1)">dhclient</span> 正常情况下是不会有任何输出内容的。</p><p><img src="https://img2020.cnblogs.com/blog/1975709/202103/1975709-20210312105251559-1553694572.png"></p>
<p>2.查看当前主机的ip，使用命令：<span style="background-color: rgba(0, 255, 0, 1)">ip addr</span>，查看IP地址。注意：英文字母的大小写，Linux系统是区分大小写的。</p>
<p><img src="https://img2020.cnblogs.com/blog/1975709/202103/1975709-20210312105450053-446532933.png"></p>
<p><strong>解释说明：</strong>可以看到，这台机器有两个<span lang="EN-US">IP地址。第一个地址<span lang="EN-US">127.0.0.1是回环地址，网卡名叫<span lang="EN-US">lo，<span lang="EN-US">Windows操作系统也有该地址，用来自己和自己通信。第二个地址是<span lang="EN-US">192.168.168.128，就是刚刚自动获取的<span lang="EN-US">IP地址，其中<span lang="EN-US">ens33是网卡的名字。<span lang="EN-US"><br>自动获取<span lang="EN-US">IP地址后，测试一下是否可以联网（<span lang="EN-US">centos能联网的前提是你的物理机可以联网）。输入<span lang="EN-US"><span style="background-color: rgba(0, 255, 0, 1)">ping -c 4 www.baidu.com</span>。</span></span></span></span></span></span></span></span></span></span></span></p>
<p><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><img src="https://img2020.cnblogs.com/blog/1975709/202103/1975709-20210312105649027-1393886509.png"></span></span></span></span></span></span></span></span></span></span></span></p>
<p> </p>
<p>3.查看VMware NAT网络模式的网段是多少。点击VMware虚拟机左上角菜单栏的“编辑”，选择“虚拟网络编辑器”。可以查看到网关是：192.168.168.2</p>
<p><img src="https://img2020.cnblogs.com/blog/1975709/202103/1975709-20210312105936336-493346565.png"></p>
<p>4.手动给<span lang="EN-US">Linux设置<span lang="EN-US">IP地址。输入<span lang="EN-US"><span style="background-color: rgba(0, 255, 0, 1)">vi /etc/sysconfig/network-scripts/ifcfg-ens33</span>并且回车，<span lang="EN-US">vi是一个用来编辑文本的命令。<span lang="EN-US">ifcfg-en33这个文件就是网卡的配置文件，要修改<span lang="EN-US">IP地址，就得编辑这个文件。你的网卡配置文件名字可能不是这个，这个主要看你网卡的名字是什么。<span lang="EN-US"><br>
<br>
</span></span></span></span></span></span></span><img src="https://img2020.cnblogs.com/blog/1975709/202103/1975709-20210312110702261-465314986.png"></p>
<p><span style="background-color: rgba(0, 255, 0, 1)">回车后按字母 </span><span lang="EN-US"><span style="background-color: rgba(0, 255, 0, 1)">i 键</span>，就可以编辑了。我们需要修改的内容有，将<span lang="EN-US"><span style="background-color: rgba(0, 255, 0, 1)">ONBOOT=no改为</span><span lang="EN-US"><span style="background-color: rgba(0, 255, 0, 1)">ONBOOT=yes</span>，将<span lang="EN-US"><span style="background-color: rgba(0, 255, 0, 1)">BOOTPROTO=dhcp改为</span><span lang="EN-US"><span style="background-color: rgba(0, 255, 0, 1)">BOOTPROTO=static</span>，并<span style="background-color: rgba(0, 255, 0, 1)">增加如下字符</span><span lang="EN-US"><br>
<img src="https://img2020.cnblogs.com/blog/1975709/202103/1975709-20210312111024410-1074460355.png"><br>
</span></span></span></span></span></span></p>
<p><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US">ONBOOT设置为<span lang="EN-US">yes，表示网卡随系统一同启动。<span lang="EN-US">BOOTPROTO用来设置网卡的启动类型，<span lang="EN-US">dhcp表示自动获取<span lang="EN-US">IP地址，<span lang="EN-US">static表示手动设置静态<span lang="EN-US">IP地址。<span lang="EN-US">IPADDR指定<span lang="EN-US">IP地址（<span lang="EN-US">IP地址取决于前面自动获取的地址），<span lang="EN-US">NETMASK指定子网掩码，<span lang="EN-US">GETWAY指定网关，<span lang="EN-US">DNS1指定上网用的<span lang="EN-US">DNS IP地址，这个<span lang="EN-US">8.8.8.8是谷歌<span lang="EN-US">公司提供的一个公共<span lang="EN-US">DNS。完成以上的更改后，按一下<span lang="EN-US"><span style="background-color: rgba(0, 255, 0, 1)">Esc</span>键，然后<span style="background-color: rgba(0, 255, 0, 1)">输入“ </span><span lang="EN-US"><span style="background-color: rgba(0, 255, 0, 1)">:wq ”并回车</span>，退出刚才的文档。</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></p>
<p><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US">5.然后重启网络服务，运行如下命令：<span style="background-color: rgba(0, 255, 0, 1)">systemctl restart network.service</span><span lang="EN-US"><br>
<img src="https://img2020.cnblogs.com/blog/1975709/202103/1975709-20210312111230240-351742938.png"><br>
</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></p>
<p><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US">6.然后查看一下ip地址输入命令：<span style="background-color: rgba(0, 255, 0, 1)"><code>ip addr</code></span>，再测试一下网络的连通性使用命令：<span style="background-color: rgba(0, 255, 0, 1)"><code>ping -c 4 www.baidu.com</code></span>。出现如下效果则表是网络配置成功。</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></p>
<p><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><span lang="EN-US"><img src="https://img2020.cnblogs.com/blog/1975709/202103/1975709-20210312111403367-674749728.png"></span></span></span></span></span></p><br><br>
来源：https://www.cnblogs.com/lvlp/p/14522704.html
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