sentos7网卡改名

一、已经装好系统CentOS7修改网卡为eth0

1. 修改网卡配置文件
[root@localhost ~]# mv /etc/sysconfig/network-scripts/ifcfg-ens33   /etc/sysconfig/network-scripts/ifcfg-eth0

[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0                                   
NAME=eth0  

2. GRUB添加kernel参数
# vim /etc/sysconfig/grub
GRUB_CMDLINE_LINUX="......      net.ifnames=0"

3.重新装载配置文件
# grub2-mkconfig -o /boot/grub2/grub.cfg

4. reboot

二、未装好系统CentOS7修改网卡为eth0

也可在安装系统时添加kernel参数 net.ifnames=0

 三、修改网卡名脚本

#！/bin/sh
a=`ifconfig  |grep mtu |cut -f1 -d ':'`
b=0

for i in $a
do
if  [ $i != 'lo' ]
then

echo -e "33[40;32m ===================================start edit eth$b================================================================================33[0m"

sed -i "s/^NAME.*$/NAME=eth${b}/g" /etc/sysconfig/network-scripts/ifcfg-$i
sed -i "s/^BOOTPROTO.*$/BOOTPROTO=static/g" /etc/sysconfig/network-scripts/ifcfg-$i
sed -i "s/^DEVICE.*$/DEVICE=eth${b}/g" /etc/sysconfig/network-scripts/ifcfg-$i
sed -i '/PROXY_METHO|BROWSER_ONLY|DEFROUTE|IPV4_FAILURE_FATAL|IPV6*|UUID/d' /etc/sysconfig/network-scripts/ifcfg-$i

mv /etc/sysconfig/network-scripts/ifcfg-$i /etc/sysconfig/network-scripts/ifcfg-eth$b

((b++))
sleep 2
else
echo "skip $i"
fi
done

sed -i 's/rhgb/net.ifnames=0 biosdevname=0 &/' /etc/default/grub

grub2-mkconfig -o /boot/grub2/grub.cfg
grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg

echo -e "33[40;32m ===================================edit network finish===========================================================================33[0m"