CentOS7修改默认网卡名称为eth0

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，如下：

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，

centos7-eth-01

增加内核参数：net.ifnames=0 biosdevname=0

centos7-eth-02

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

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

因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"

用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

1	[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

(责任编辑：IT)

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