What should I do if the centos system does not recognize the network card?

Problem:

The network card cannot be recognized after adding it to CentOS in the virtual machine.

Solution:

1. Get the real mac of the new network card

#ip addr

(Recommended tutorial: centos tutorial)

2. Copy eth0 to eth1 and modify the configuration file

#cd /etc/sysconfig/network-scripts
#cp ifcfg-eth0 ifcfg-eth1
#vim ifcfg-eth1

The contents to be modified are:

HWADD    #通过ip addr获取
UUI     #若没有查到UUID，可以注释掉
NAME     #改为当前的网卡名eth1
DEVICE   #改为当前的网卡名eth1
IPADDR
GATEWAY

Save and exit.

3. Restart the network card

#systemctl restart network

Recommended related video tutorials: linux video tutorial

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