Centos7安装完成后网卡名称默认为enoXXX,非常熟悉的ethX没有了,总是感觉怪怪的。如果最小化安装找不到ifconfig命令，请安装net-tools软件包.更改步骤如下：

1. [root@server1 ~]#vi /etc/sysconfig/network-scripts/ifcfg-enoXXX

   HWADDR=00:0C:29:AF:BF:18
   TYPE=Ethernet
   BOOTPROTO=dhcp
   DEFROUTE=yes
   PEERDNS=yes
   PEERROUTES=yes
   NAME=enoXXX                   //此处将enoXXX更改为ethX
   UUID=17cdd976-0b81-4286-80cf-185ec95f5ae8
   ONBOOT=no                    //此处将no更改为yes      

2.  [root@server1 ~]#cd /etc/sysconfig/network-scripts

    [root@server1 ~]#mv ifcfg-enoXXX ifcfg-eth0

3. [root@server1 ~]# vi /etc/default/grub
   GRUB_TIMEOUT=5
   GRUB_DISTRIBUTOR="$(sed ‘s, release .*$,,g‘ /etc/system-release)"
   GRUB_DEFAULT=saved
   GRUB_DISABLE_SUBMENU=true
   GRUB_TERMINAL_OUTPUT="console"
   GRUB_CMDLINE_LINUX="vconsole.keymap=us crashkernel=auto  vconsole.font=latarcyrheb-sun16 net.ifnames=0 biosdevname=0 rhgb quiet"
   GRUB_DISABLE_RECOVERY="true"   //添加标记为红色的两个参数

4. [root@server1 ~]# grub2-mkconfig -o /boot/grub2/grub     // 执行此命令，重新加载下grub配置
   Generating grub configuration file ...
   Found linux image: /boot/vmlinuz-3.10.0-123.el7.x86_64
   Found initrd image: /boot/initramfs-3.10.0-123.el7.x86_64.img
   Warning: Please don‘t use old title `CentOS Linux, with Linux 3.10.0-123.el7.x86_64‘ for GRUB_DEFAULT, use `Advanced options for CentOS Linux>CentOS Linux, with Linux 3.10.0-123.el7.x86_64‘ (for versions before 2.00) or `gnulinux-advanced-66b96693-051c-4021-85ef-5f7ef0f970e2>gnulinux-3.10.0-123.el7.x86_64-advanced-66b96693-051c-4021-85ef-5f7ef0f970e2‘ (for 2.00 or later)
   Found linux image: /boot/vmlinuz-0-rescue-b6f54d97b52944738996d2d9aeb3d59b
   Found initrd image: /boot/initramfs-0-rescue-b6f54d97b52944738996d2d9aeb3d59b.img
   done

5. [root@server1 ~]# reboot

   重启操作系统，Centos7的网卡名称就更改完成了。
   

centos 7 网卡名称更改