CentOS7修改网卡为eth0

Posted 2020-08-20 花儿与少年

CentOS7修改网卡为eth0

1.编辑网卡信息

[[email protected]~]# cd /etc/sysconfig/network-scripts/  #进入网卡目录

[[email protected]]# mv ifcfg-eno16777728 ifcfg-eth0  #重命名网卡名称

[[email protected]]# cat ifcfg-eth0  #编辑网卡信息

TYPE=Ethernet

BOOTPROTO=static

DEFROUTE=yes

PEERDNS=yes

PEERROUTES=yes

IPV4_FAILURE_FATAL=no

NAME=eth0  #name修改为eth0

ONBOOT=yes

IPADDR=192.168.56.12

NETMASK=255.255.255.0

GATEWAY=192.168.56.2

DNS1=192.168.56.2

2.修改grub

[[email protected]~]# cat /etc/sysconfig/grub  #编辑内核信息,添加红色字段的

GRUB_TIMEOUT=5

GRUB_DEFAULT=saved

GRUB_DISABLE_SUBMENU=true

GRUB_TERMINAL_OUTPUT="console"

GRUB_CMDLINE_LINUX="crashkernel=autorhgb net.ifnames=0 biosdevname=0 quiet"

GRUB_DISABLE_RECOVERY="true"

[[email protected]~]# grub2-mkconfig -o /boot/grub2/grub.cfg  #生成启动菜单

Generatinggrub configuration file ...

Foundlinux image: /boot/vmlinuz-3.10.0-229.el7.x86_64

Foundinitrd image: /boot/initramfs-3.10.0-229.el7.x86_64.img

Foundlinux image: /boot/vmlinuz-0-rescue-1100f7e6c97d4afaad2e396403ba7f61

Foundinitrd image: /boot/initramfs-0-rescue-1100f7e6c97d4afaad2e396403ba7f61.img

Done

也可以在开机启动加载安装系统界面设置。

3.验证是否修改成功

[[email protected]~]# reboot  #必须重启系统生效

[[email protected]~]# yum install net-tools #默认centos7不支持ifconfig 需要看装net-tools包

[[email protected]~]# ifconfig eth0  #在次查看网卡信息

eth0:flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.56.12  netmask 255.255.255.0  broadcast 192.168.56.255

        inet6 fe80::20c:29ff:fe5c:7bb1  prefixlen 64 scopeid 0x20<link>

        ether 00:0c:29:5c:7b:b1  txqueuelen 1000  (Ethernet)

        RX packets 152  bytes 14503 (14.1 KiB)

        RX errors 0  dropped 0 overruns 0  frame 0

        TX packets 98  bytes 14402 (14.0 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0 collisions 0