centos7将网卡名字改成eth样式

ll /etc/sysconfig/grub 
lrwxrwxrwx 1 root root 17 Jun 12  2016 /etc/sysconfig/grub -> /etc/default/grub

1、修改grub文件
# vim /etc/sysconfig/grub
# 内容如下：
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  rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
 
2、修改上面内容中的GRUB_CMDLINE_LINUX的值，增加
net.ifnames=0 biosdevname=0

# vim /etc/sysconfig/grub
# 修改后的内容如下：
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-sun16net.ifnames=0 biosdevname=0 rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
 
3、执行：grub2-mkconfig -o /boot/grub2/grub.cfg
然后，重启系统，网卡名字就变成eth*了

　grub2-mkconfig   亦可以 grub2-install