[CentOS8] to modify the name of the network card eth0

• View the current physical card information

# dmesg | grep eth
[    4.829146] vmxnet3 0000:03:00.0 eth0: NIC Link is Up 10000 Mbps
[    5.671853] vmxnet3 0000:03:00.0 ens160: renamed from eth0

We need to change eth0 ens160

• View the current connection information

# nmcli connection show
NAME    UUID                                  TYPE      DEVICE
ens160  46f3176f-23ac-4af8-b9fe-08d3c668ba81  ethernet  ens160

• New eth0 connection

# nmcli connection add type ethernet con-name eth0 ifname ens160
# nmcli connection show
NAME    UUID                                  TYPE      DEVICE
ens160  46f3176f-23ac-4af8-b9fe-08d3c668ba81  ethernet  ens160
eth0    55e201dc-0f9e-44c7-b6ae-da09370e3718  ethernet  --

• Delete ens160 connection

# nmcli connection delete ens160
# nmcli connection show
NAME  UUID                                  TYPE      DEVICE
eth0  55e201dc-0f9e-44c7-b6ae-da09370e3718  ethernet  ens160

• Modify the physical NIC name

# 查看配置文件
# ls /etc/sysconfig/network-scripts/
ifcfg-eth0
# 修改物理网卡名称
# sed -i 's/ens160/eth0/' /etc/sysconfig/network-scripts/ifcfg-eth0

• Modify the Linux kernel configuration

# 备份配置文件
# \cp /etc/default/grub /etc/default/grub.bak
# 修改配置文件
# sed -i 's/rhgb/net.ifnames=0 &/' /etc/default/grub
# 生成启动文件
# grub2-mkconfig -o /boot/grub2/grub.cfg

• Restart
  

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