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This article introduces the relevant knowledge of "centos network card eth1 into eth0 modification method". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

In virtualization, virtual machine NICs cloned from templates are named eth2, and some programs or scripts that involve network cards are written with eth0 by default, so there is a problem of changing eth2 to eth0, as follows:

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

The contents of the old network card are still retained in the 70-persistent-net.rules, and the new network card is identified as eth2.

Release the line that represents the old network card, and then change the eth2 in the line that represents the new network card to eth0

# mv / etc/sysconfig/network-scripts/ifcfg-eth2 / etc/sysconfig/network-scripts/ifcfg-eth0

Then edit the / etc/sysconfig/network-scripts/ifcfg-eth0 file and change the eth2 to eth0:

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

Restart.

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