Change centos Nic eth1 to eth0

In virtualization, the virtual machine NICs cloned from the template are named eth1, and some programs or scripts that involve NICs are written with eth0 by default, the problem of changing eth1 to eth0 is as follows:

# Vi/etc/udev/rules. d/70-persistent-net.rules

The content of the old Nic is retained in 70-persistent-net.rules, and the new Nic is recognized as eth1.
Comment out the line indicating the old Nic, and change eth1 in the line indicating the new Nic to eth0.

# Mv/etc/sysconfig/network-scripts/ifcfg-eth1/etc/sysconfig/network-scripts/ifcfg-eth0

Then edit the/etc/sysconfig/network-scripts/ifcfg-eth0 file and change eth1 to eth0:

Vi/etc/sysconfig/network-scripts/ifcfg-eth0

Restart.