centos7中输入ifconfig出现ens33，没有eth0

时间：2023-03-10 02:43:00
centos7中输入ifconfig出现ens33，没有eth0

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

centos7中输入ifconfig出现ens33，没有eth0

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

  1. [root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33
  2. TYPE=Ethernet
  3. BOOTPROTO=static
  4. IPADDR=192.168.0.116
  5. NETMASK=255.255.255.0
  6. GATEWAY=192.168.0.115
  7. DNS1=114.114.114.114
  8. DNS2=8.8.8.8
  9. DEFROUTE=yes
  10. PEERDNS=yes
  11. PEERROUTES=yes
  12. IPV4_FAILURE_FATAL=no
  13. IPV6INIT=yes
  14. IPV6_AUTOCONF=yes
  15. IPV6_DEFROUTE=yes
  16. IPV6_PEERDNS=yes
  17. IPV6_PEERROUTES=yes
  18. IPV6_FAILURE_FATAL=no
  19. IPV6_ADDR_GEN_MODE=stable-privacy
  20. NAME=eth0
  21. UUID=972a1eb3-049f-4db2-80f5-7d8fd28ef76f
  22. DEVICE=eth0
  23. ONBOOT=yes
[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

  1. [root@localhost ~]# cd /etc/sysconfig/network-scripts/
  2. [root@localhost network-scripts]# mv ifcfg-ens33 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

  1. [root@localhost network-scripts]# vi /etc/default/grub
  2. GRUB_TIMEOUT=5
  3. GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
  4. GRUB_DEFAULT=saved
  5. GRUB_DISABLE_SUBMENU=true
  6. GRUB_TERMINAL_OUTPUT="console"
  7. GRUB_CMDLINE_LINUX="crashkernel=auto net.ifnames=0 biosdevname=0 rhgb quiet"
  8. GRUB_DISABLE_RECOVERY="true"
[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。

  1. [root@localhost network-scripts]# grub2-mkconfig -o /boot/grub2/grub.cfg
  2. Generating grub configuration file ...
  3. Found linux image: /boot/vmlinuz-3.10.0-514.el7.x86_64
  4. Found initrd image: /boot/initramfs-3.10.0-514.el7.x86_64.img
  5. Found linux image: /boot/vmlinuz-0-rescue-b7f83ca165964a47b8b283907b126140
  6. Found initrd image: /boot/initramfs-0-rescue-b7f83ca165964a47b8b283907b126140.img
  7. done
[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

  1. [root@localhost network-scripts]# reboot
[root@localhost network-scripts]# reboot

6.输入ifconfig验证

centos7中输入ifconfig出现ens33，没有eth0
亲测可行

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