CentOS7修改默认的网卡

1.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 

输入完成之后回车安装就可以了

2.修改网卡配置文件中的 DEVICE= 参数的关于 eth0

[root@localhost ~]# cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]# vi ifcfg-eno16777626
HWADDR=00:0C:29:E2:7D:9D
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
UUID=4888e28d-26bb-4c66-bcb0-0d636024c79e
NAME=eno16777626
#DEVICE=eno16777626
DEVICE=eth0
ONBOOT=yes
网卡配置文件名称改为 ifcfg-eth0 

[root@localhost network-scripts]# mv ifcfg-eno16777626 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@localhost 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@localhost ~]# 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@localhost network-scripts]# reboot

重启之后验证网卡名称:

[root@localhost ~]# ifconfig 
eth0: flags=4163  mtu 1500
        inet 192.168.130.135  netmask 255.255.255.0  broadcast 192.168.130.255
        inet6 fe80::20c:29ff:fee2:7d9d  prefixlen 64  scopeid 0x20
        ether 00:0c:29:e2:7d:9d  txqueuelen 1000  (Ethernet)
        RX packets 9599  bytes 12602466 (12.0 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2027  bytes 126428 (123.4 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 0  (Local Loopback)
        RX packets 6  bytes 560 (560.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 6  bytes 560 (560.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0