After centos is changed to the main board, the network cannot be accessed.

After the CentOS cloned from the VM is restored, the network cannot be connected. If ifconfig is used, no eth0 is detected, and the virtual NIC address is changed.
Solution:

First, open/etc/udev/rules. d/70-persistent-net.rules with the following content:
# PCI device 0x1022: 0x2000 (pcnet32)
SUBSYSTEM = "net", ACTION = "add", DRIVERS = "? * ", ATTR {address} =" 00: 0c: 29: 8f: 89: 97 ", ATTR {type} =" 1 ", KERNEL = "eth *", NAME = "eth0"
# PCI device 0x1022: 0x2000 (pcnet32)
SUBSYSTEM = "net", ACTION = "add", DRIVERS = "? * ", ATTR {address} =" 00: 0c: 29: 50: bd: 17 ", ATTR {type} =" 1 ", KERNEL = "eth *", NAME = "eth1"

In the past, the NIC Driver configured for the new virtual machine was re-installed to eth1 according to the new Nic, so there are two solutions:
First, delete the newly added eth1 configuration and change the Virtual Machine NIC address to the same as eth0;
The second is to change the NIC address and name in the/etc/sysconfig/network-scripts/ifcfg-eth0 to the same as eth1.