ANSHENG'S BLOG
CentOS7修改默认网卡名称为eth0
# centospublishDate · 2017-05-16 / lastEditedTime · 2022-04-06 04:50:00

CentOS7默认的网卡名称是和设备名称是随机的,如果要修改网卡名称以eth开头,有两种方式

第一种方式

这种方式适合在安装操作系统的时候进行设置,

点击 Tab,打开kernel启动选项,

增加内核参数:net.ifnames=0 biosdevname=0

输入完成之后回车正常安装操作系统就好了。

第二种方式

修改网卡配置文件中的DEVICE=参数的关于eth0

[root@ansheng ~]# cd /etc/sysconfig/network-scripts/ [root@ansheng network-scripts]# vi ifcfg-eno16777728 TYPE=Ethernet BOOTPROTO=dhcp DEFROUTE=yes PEERDNS=yes PEERROUTES=yes IPV4_FAILURE_FATAL=no IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_PEERDNS=yes IPV6_PEERROUTES=yes IPV6_FAILURE_FATAL=no NAME=eno16777728 UUID=8a3eade8-005c-46df-81f2-6e2598457bac #DEVICE=eno16777728 DEVICE=eth0 ONBOOT=yes

网卡配置文件名称改为ifcfg-eth0

[root@ansheng network-scripts]# mv ifcfg-eno16777728 ifcfg-eth0

CentOS7采用grub2引导,还需要对grub2进行修改,编辑/etc/default/grub配置文件,在GRUB_CMDLINE_LINUX这个参数后面加入net.ifnames=0 biosdevname=0

[root@ansheng network-scripts]# vi /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="rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet net.ifnames=0 biosdevname=0" GRUB_DISABLE_RECOVERY="true"

grub2-mkconfig命令重新生成GRUB配置并更新内核

[root@ansheng network-scripts]# grub2-mkconfig -o /boot/grub2/grub.cfg Generating grub configuration file ... Found linux image: /boot/vmlinuz-3.10.0-327.el7.x86_64 Found initrd image: /boot/initramfs-3.10.0-327.el7.x86_64.img Found linux image: /boot/vmlinuz-0-rescue-4dd6b54f74c94bff9e92c61d669fc195 Found initrd image: /boot/initramfs-0-rescue-4dd6b54f74c94bff9e92c61d669fc195.img done

重启系统

[root@ansheng network-scripts]# reboot

重启之后验证网卡名称:

[root@ansheng ~]# ifconfig eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.56.130 netmask 255.255.255.0 broadcast 192.168.56.255 inet6 fe80::20c:29ff:fe6d:d894 prefixlen 64 scopeid 0x20<link> ether 00:0c:29:6d:d8:94 txqueuelen 1000 (Ethernet) RX packets 27413 bytes 38532163 (36.7 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 7727 bytes 702194 (685.7 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 0 (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