Centos 7开启网卡自动获取IP的详细方法
<p>Centos7默认安装是没有开启配置网卡信息的，无法访问外网。</p>
<p>
下边配置打开网络自动获取Ip地址</p>
<p>
1.查看网卡信息</p>
<p>
执行Ifconfig</p>
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<code class="bash plain">eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500</code>
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<code class="bash spaces"> </code><code class="bash plain">inet6 fe80::20c:29ff:fee8:8637 prefixlen 64 scopeid 0x20<link></code>
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<code class="bash spaces"> </code><code class="bash plain">ether 00:0c:29:e8:86:37 txqueuelen 1000 (Ethernet)</code>
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<code class="bash spaces"> </code><code class="bash plain">RX packets 1121 bytes 98968 (96.6 KiB)</code>
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<code class="bash spaces"> </code><code class="bash plain">RX errors 0 dropped 0 overruns 0 frame 0</code>
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<code class="bash spaces"> </code><code class="bash plain">TX packets 179 bytes 25233 (24.6 KiB)</code>
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<code class="bash spaces"> </code><code class="bash plain">TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 </code>
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<code class="bash plain">lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536</code>
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<code class="bash spaces"> </code><code class="bash plain">inet 127.0.0.1 netmask 255.0.0.0</code>
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<code class="bash spaces"> </code><code class="bash plain">inet6 ::1 prefixlen 128 scopeid 0x10<host></code>
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<code class="bash spaces"> </code><code class="bash plain">loop txqueuelen 0 (Local Loopback)</code>
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<code class="bash spaces"> </code><code class="bash plain">RX packets 900 bytes 78372 (76.5 KiB)</code>
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<code class="bash spaces"> </code><code class="bash plain">RX errors 0 dropped 0 overruns 0 frame 0</code>
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<code class="bash spaces"> </code><code class="bash plain">TX packets 900 bytes 78372 (76.5 KiB)</code>
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<code class="bash spaces"> </code><code class="bash plain">TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 </code>
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<p>
1.eno16777736代表网卡的名称，ether 00:0c:29:e8:86:37代表网卡的Mac地址</p>
<p>
2.配置网卡开始网络连接</p>
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<code class="bash functions">cd</code> <code class="bash plain">/etc/system/network-scripts/</code>
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<code class="bash functions">vi</code> <code class="bash plain">ifcfg-eno16777736 </code>
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<code class="bash plain">HWADDR=00:0C:29:E8:86:37</code>
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<code class="bash plain">TYPE=Ethernet</code>
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<code class="bash plain">BOOTPROTO=dhcp</code>
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<code class="bash plain">DEFROUTE=</code><code class="bash functions">yes</code>
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<code class="bash plain">PEERDNS=</code><code class="bash functions">yes</code>
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<code class="bash plain">PEERROUTES=</code><code class="bash functions">yes</code>
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<code class="bash plain">IPV4_FAILURE_FATAL=no</code>
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<code class="bash plain">IPV6INIT=</code><code class="bash functions">yes</code>
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<code class="bash plain">IPV6_AUTOCONF=</code><code class="bash functions">yes</code>
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<code class="bash plain">IPV6_DEFROUTE=</code><code class="bash functions">yes</code>
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<code class="bash plain">IPV6_PEERDNS=</code><code class="bash functions">yes</code>
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<code class="bash plain">IPV6_PEERROUTES=</code><code class="bash functions">yes</code>
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<code class="bash plain">IPV6_FAILURE_FATAL=no</code>
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<code class="bash plain">NAME=eno16777736</code>
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<code class="bash plain">UUID=79d6c916-aab8-45e4-a163-37ae73393d26</code>
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<code class="bash plain">ONBOOT=no</code>
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将ONBOOT= no改成ONBOOT=yes</p>
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3.重启网络</p>
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<code class="bash plain">service network restart</code>
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<p>
4.再执行ifconfig</p>
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<code class="bash plain">eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500</code>
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<code class="bash spaces"> </code><code class="bash plain">inet 192.168.159.128 netmask 255.255.255.0 broadcast 192.168.159.255</code>
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<code class="bash spaces"> </code><code class="bash plain">inet6 fe80::20c:29ff:fee8:8637 prefixlen 64 scopeid 0x20<link></code>
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<code class="bash spaces"> </code><code class="bash plain">ether 00:0c:29:e8:86:37 txqueuelen 1000 (Ethernet)</code>
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<code class="bash spaces"> </code><code class="bash plain">RX packets 1699 bytes 140091 (136.8 KiB)</code>
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<code class="bash spaces"> </code><code class="bash plain">RX errors 0 dropped 0 overruns 0 frame 0</code>
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<code class="bash spaces"> </code><code class="bash plain">TX packets 333 bytes 42669 (41.6 KiB)</code>
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<code class="bash spaces"> </code><code class="bash plain">TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0</code>
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<code class="bash plain">lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536</code>
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<code class="bash spaces"> </code><code class="bash plain">inet 127.0.0.1 netmask 255.0.0.0</code>
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<code class="bash spaces"> </code><code class="bash plain">inet6 ::1 prefixlen 128 scopeid 0x10<host></code>
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<code class="bash spaces"> </code><code class="bash plain">loop txqueuelen 0 (Local Loopback)</code>
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<code class="bash spaces"> </code><code class="bash plain">RX packets 900 bytes 78372 (76.5 KiB)</code>
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<code class="bash spaces"> </code><code class="bash plain">RX errors 0 dropped 0 overruns 0 frame 0</code>
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<code class="bash spaces"> </code><code class="bash plain">TX packets 900 bytes 78372 (76.5 KiB)</code>
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<code class="bash spaces"> </code><code class="bash plain">TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0</code>
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<p>
inet 192.168.159.128 代表IP地址</p>
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。</p>
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原文链接：http://www.cnblogs.com/lpush/p/5427135.html</p>
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