Linux 网卡名称更改

网卡配置文件名称重命名

[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

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"

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