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
6.输入ifconfig验证
亲测可行
centos7中输入ifconfig 没有IP地址
原文：https://www.cnblogs.com/ygw1010/p/11630298.html
