用ifconfig查看网卡名称为ens33，现在要将它修改成eth0

[root@localhost ~]# ifconfig

ens33: flags=4163 mtu 1500

inet 192.168.1.3 netmask 255.255.255.0 broadcast 192.168.1.255

inet6 2409:8a02:9014:8440:20c:29ff:fe95:cc8f prefixlen 64 scopeid 0x0

inet6 fe80::20c:29ff:fe95:cc8f prefixlen 64 scopeid 0x20

ether 00:0c:29:95:cc:8f txqueuelen 1000 (Ethernet)

RX packets 10403 bytes 15311311 (14.6 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 957 bytes 64104 (62.6 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

编辑配置文件/etc/sysconfig/network-scripts/ifcfg-ens33

将DEVICE=ens33修改成DEVICE=eth0

[root@localhost ~]# cd /etc/sysconfig/network-scripts/

[root@localhost network-scripts]# mv ifcfg-ens33 ifcfg-eth0

[root@localhost network-scripts]# vim ifcfg-eth0

BOOTPROTO=dhcp

DEVICE=eth0

ONBOOT=yes

DNS1=8.8.8.8

编辑/etc/default/grub并加入“net.ifnames=0

biosdevname=0”

[root@localhost ~]# vim /etc/default/grub

运行命令grub2-mkconfig -o /boot/grub2/grub.cfg来重新生成GRUB配置并更新内核参数

[root@localhost ~]# grub2-mkconfig -o /boot/grub2/grub.cfg

Generating grub configuration file ...

Found linux image: /boot/vmlinuz-3.10.0-957.el7.x86_64

Found initrd image: /boot/initramfs-3.10.0-957.el7.x86_64.img

Found linux image: /boot/vmlinuz-0-rescue-db7bab5d4db84dedbfad3bc210d90ded

Found initrd image: /boot/initramfs-0-rescue-db7bab5d4db84dedbfad3bc210d90ded.img

done

使用reboot命令重启操作系统

[root@localhost ~]# reboot

重启完成之后进入系统使用ifconfig命令查看网卡名称已经修改成eth0了

[root@localhost ~]# ifconfig

eth0: flags=4163 mtu 1500

inet 192.168.1.3 netmask 255.255.255.0 broadcast 192.168.1.255

inet6 2409:8a02:9014:8440:20c:29ff:fe95:cc8f prefixlen 64 scopeid 0x0

inet6 fe80::20c:29ff:fe95:cc8f prefixlen 64 scopeid 0x20

ether 00:0c:29:95:cc:8f txqueuelen 1000 (Ethernet)

RX packets 13 bytes 2223 (2.1 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 21 bytes 2495 (2.4 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0