centos 修改网卡

问题：复制过来的虚拟机，发现不能上网了？

解决办法：

1、vim /etc/udev/rules.d/70-persistent-net.rules

可以看到：

这里备注一下：图中的eth1改成etho之前，得看看自己的网卡

打开：cd /etc/sysconfig/network-scripts

[hadoop@master network-scripts]$ pwd/etc/sysconfig/network-scripts[hadoop@master network-scripts]$ ls<span style="color:#FF0000;">ifcfg-eth0</span>   ifdown-eth   ifdown-post    ifdown-tunnel  ifup-eth   ifup-plip   ifup-routes    init.ipv6-global ifcfg-lo     ifdown-ippp  ifdown-ppp     ifup           ifup-ippp  ifup-plusb  ifup-sit       net.hotplugifdown       ifdown-ipv6  ifdown-routes  ifup-aliases   ifup-ipv6  ifup-post   ifup-tunnel    network-functionsifdown-bnep  ifdown-isdn  ifdown-sit     ifup-bnep      ifup-isdn  ifup-ppp    ifup-wireless  network-functions-ipv6[hadoop@master network-scripts]$

2、编辑ifcfg-eth0

[hadoop@master network-scripts]$ vim ifcfg-eth0

<img 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" alt="" />把刚才的mac地址粘贴到HWADDR=后面如果有多台机器，把UUID也更换一下

3、重启网卡

service network restart

就可以上网了。