CentOS7修改网卡为eth0

1、安装系统前修改方法

安装CentOS7,在启动前修改内核让网卡为eth0，如图1-2

 

 

net.ifnames=0 biosdevname=0

 2、安装完操作系统更改

1.编辑网卡信息

[root@linux-node2~]# cd /etc/sysconfig/network-scripts/  #进入网卡目录

[root@linux-node2network-scripts]# mv ifcfg-eno16777728 ifcfg-eth0  #重命名网卡名称

[root@linux-node2 network-scripts]# 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

[root@linux-node2 ~]# 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=auto rhgb net.ifnames=0 biosdevname=0 quiet"

GRUB_DISABLE_RECOVERY="true"

[root@linux-node2 ~]# grub2-mkconfig -o /boot/grub2/grub.cfg  #生成启动菜单

Generating
grub configuration file ...

Found
linux image: /boot/vmlinuz-3.10.0-229.el7.x86_64

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

Found
linux image: /boot/vmlinuz-0-rescue-1100f7e6c97d4afaad2e396403ba7f61

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

Done

 

3.验证是否修改成功

[root@linux-node2 ~]# reboot  #必须重启系统生效

[root@linux-node2 ~]# yum install net-tools  #默认centos7不支持ifconfig 需要看装net-tools包

[root@linux-node2 ~]# 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