What should I do if the network card under centos always fails to start?

Problem:

Cannot start the network card, the error screenshot is as follows:

Cause and solution:

It is related to the NetworkManager package that comes with the network card, just close it.

(Recommended tutorial:centos tutorial)

The commands are as follows:

1. Temporarily shut down

# systemctl stop NetworkManager

2. Permanently shut down the network Management

# systemctl disable NetworkManager

3. Restart the network service

systemctl start network.service

Recommended related video tutorials:linux video tutorial

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