更改Linux系统的网卡名称

Posted 2021-09-26 刘遄

一、网卡配置文件名称重命名为eth0 (也可以改为其他名称)

[root@Jaking11 ~]# ifconfig
ens33: flags=4163 mtu 1500

    inet 192.168.10.11  netmask 255.255.255.0  broadcast 192.168.10.255
    inet6 fe80::250:56ff:fe29:eae  prefixlen 64  scopeid 0x20
    ether 00:50:56:29:0e:ae  txqueuelen 1000  (Ethernet)
    RX packets 132  bytes 14492 (14.1 KiB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 115  bytes 13105 (12.7 KiB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73 mtu 65536

    inet 127.0.0.1  netmask 255.0.0.0
    inet6 ::1  prefixlen 128  scopeid 0x10 loop  txqueuelen 1000  (Local Loopback)
    RX packets 140  bytes 11204 (10.9 KiB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 140  bytes 11204 (10.9 KiB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@Jaking11 ~]#
[root@Jaking11 ~]# cd /etc/sysconfig/network-scripts/
[root@Jaking11 network-scripts]# ls
ifcfg-ens33 ifdown-ppp ifup-eth ifup-sit
ifcfg-lo ifdown-routes ifup-ippp ifup-Team
ifdown ifdown-sit ifup-ipv6 ifup-TeamPort
ifdown-bnep ifdown-Team ifup-isdn ifup-tunnel
ifdown-eth ifdown-TeamPort ifup-plip ifup-wireless
ifdown-ippp ifdown-tunnel ifup-plusb init.ipv6-global
ifdown-ipv6 ifup ifup-post network-functions
ifdown-isdn ifup-aliases ifup-ppp network-functions-ipv6
ifdown-post ifup-bnep ifup-routes
[root@Jaking11 network-scripts]# mv ifcfg-ens33 ifcfg-eth0
[root@Jaking11 network-scripts]# vim ifcfg-eth0
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
NAME=eth0
DEVICE=eth0
ONBOOT=yes
IPADDR=192.168.10.11
GATEWAY=192.168.10.2
NETMASK=255.255.255.0

二、禁用网卡命名规则

此功能通过

/etc/default/grub

文件来控制，要禁用此功能，在文件中加入

"net.ifnames=0 biosdevname=0"

即可

[root@Jaking11 network-scripts]# vim /etc/default/grub

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="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap
rhgb quiet net.ifnames=0 biosdevname=0"
GRUB_DISABLE_RECOVERY="true"

三、添加udev网卡规则

在/etc/udev/rules.d目录中创建一个网卡规则70-persistent-net.rules文件，在文件中写入以下参数：

SUBSYSTEM=="net",ACTION=="add",DRIVERS=="?",ATTR{address}=="需要修改名称的网卡MAC地址",ATTR｛type｝=="1" ,KERNEL=="eth",NAME="eth0"

参考配置：

[root@Jaking11 rules.d]# vim 70-persistent-net.rules
SUBSYSTEM=="net",ACTION=="add",DRIVERS=="?*",ATTR{address}=="00:50:56:29:0e:ae",
ATTR｛type｝=="1" ,KERNEL=="eth*",NAME="eth0"

执行grub2-mkconfig -o /boot/grub2/grub.cfg命令生成更新grub配置参数

[root@Jaking11 rules.d]# 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-fe49b659ccb940fa8d260a5897c0b08a
Found initrd image: /boot/initramfs-0-rescue-fe49b659ccb940fa8d260a5897c0b08a.img
done

重启Linux系统后验证网卡名称是否更改成功

[root@Jaking11 ~]# ifconfig
eth0: flags=4163 mtu 1500

    inet 192.168.10.11  netmask 255.255.255.0  broadcast 192.168.10.255
    inet6 fe80::250:56ff:fe29:eae  prefixlen 64  scopeid 0x20
    ether 00:50:56:29:0e:ae  txqueuelen 1000  (Ethernet)
    RX packets 86  bytes 10889 (10.6 KiB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 95  bytes 10828 (10.5 KiB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73 mtu 65536

    inet 127.0.0.1  netmask 255.0.0.0
    inet6 ::1  prefixlen 128  scopeid 0x10 loop  txqueuelen 1000  (Local Loopback)
    RX packets 0  bytes 0 (0.0 B)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 0  bytes 0 (0.0 B)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0 

总结

以上就是更改 RHEL7 或者 CentOS 7 的网卡名称的方法，最后看到 eth0 说明网卡名称更改成功！