centos7安装后不能上网

布满荆棘的人生 2022-04-22 14:08 170阅读 0赞

vmware安装的centos7中没有出现eth0网卡，也没有ip，不能上网，输入ifconfig后如下图

解决办法

1.编辑网卡的配置文件 vi /etc/sysconfig/network-scripts/ifcfg-ens33 将里面的NAME和DEVICE项修改为eth0

\[root@localhost ~\]\# vi /etc/sysconfig/network-scripts/ifcfg-ens33  
TYPE=Ethernet  
BOOTPROTO=static  
IPADDR=192.168.0.116  
NETMASK=255.255.255.0  
GATEWAY=192.168.0.115  
DNS1=114.114.114.114  
DNS2=8.8.8.8  
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  
IPV6\_ADDR\_GEN\_MODE=stable-privacy  
NAME=eth0  
UUID=972a1eb3-049f-4db2-80f5-7d8fd28ef76f  
DEVICE=eth0  
ONBOOT=yes  
2.重命名网卡配置文件ifcfg-ens33为ifcfg-eth0  
\[root@localhost ~\]\# cd /etc/sysconfig/network-scripts/  
\[root@localhost network-scripts\]\# mv ifcfg-ens33 ifcfg-eth0  
3.编辑/etc/default/grub并加入“net.ifnames=0 biosdevname=0 ”到GRUBCMDLINELINUX变量  
\[root@localhost network-scripts\]\# 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="crashkernel=auto net.ifnames=0 biosdevname=0 rhgb quiet"  
GRUB\_DISABLE\_RECOVERY="true"  
4.运行命令grub2-mkconfig -o /boot/grub2/grub.cfg 来重新生成GRUB配置并更新内核参数。  
\[root@localhost network-scripts\]\# grub2-mkconfig -o /boot/grub2/grub.cfg  
Generating grub configuration file ...  
Found linux image: /boot/vmlinuz-3.10.0-514.el7.x86\_64  
Found initrd image: /boot/initramfs-3.10.0-514.el7.x86\_64.img  
Found linux image: /boot/vmlinuz-0-rescue-b7f83ca165964a47b8b283907b126140  
Found initrd image: /boot/initramfs-0-rescue-b7f83ca165964a47b8b283907b126140.img  
done  
5.重启系统  
\[root@localhost network-scripts\]\# reboot

作者：咔嚓杨  
来源：CSDN  
原文：https://blog.csdn.net/u013252047/article/details/77947594  
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