vmware安裝的centos7中沒有出現eth0網卡，也沒有ip，不能上網，輸入ifconfig后如下圖
解決辦法
1.編輯網卡的配置文件 vi /etc/sysconfig/network-scripts/ifcfg-ens33 將里面的NAME和DEVICE項修改為eth0，NOBOOY需修改為yes
[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33 TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=static IPADDR=192.168.172.20 NETMASK=255.255.255.0 GATEWAY=192.168.172.2 DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=no IPV6_ADDR_GEN_MODE=stable-privacy NAME=ens33 UUID=54b36099-eb80-45b9-a462-59f0eff9ad66 DEVICE=ens33 ONBOOT=yes DNS1=114.114.114.114 PREFIXO=24 IPV6_PEERDNS=yes IPV6_PEERROUTES=yes
2.重命名網卡配置文件ifcfg-ens33為ifcfg-eth0
[root@localhost ~]# cd /etc/sysconfig/network-scripts/ [root@localhost network-scripts]# mv ifcfg-ens33 ifcfg-eth0
3.編輯/etc/default/grub並加入“net.ifnames=0 biosdevname=0 ”到GRUBCMDLINELINUX變量
[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.運行命令grub2-mkconfig -o /boot/grub2/grub.cfg 來重新生成GRUB配置並更新內核參數。
[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.重啟系統
[root@localhost network-scripts]# reboot
6.輸入ifconfig驗證
