Centos7.9网卡名称更改

新系统默认网卡名称显示如下：

[root@docker02 ~]# ip r 
default via 10.0.2.2 dev enp0s3 proto static metric 100 
10.0.2.0/24 dev enp0s3 proto kernel scope link src 10.0.2.18 metric 100 
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 
192.168.56.0/24 dev enp0s8 proto kernel scope link src 192.168.56.105 metric 101 

现在更改为eth开头的网口，统一网口。

vi /etc/default/grub
GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"
## auto后面添加：biosdevname=0 net.ifnames=0

刷新内核：

[root@docker01 ~]# grub2-mkconfig -o /boot/grub2/grub.cfg 
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-1160.119.1.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-1160.119.1.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.10.0-1160.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-1160.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-a13c451619fe794aae55baa6633a22ac
Found initrd image: /boot/initramfs-0-rescue-a13c451619fe794aae55baa6633a22ac.img
done

重启机器：

reboot

最后更改网卡文件名称及文件内网卡名称

cd /etc/sysconfig/network-scripts
mv ifcfg-enp0s3 ifcfg-eth0
vi ifcfg-eth0

NAME="eth0"
DEVICE="eth0"

最后再重启机器完成更改。