What should I do if I get an error when restarting the centos7 network?

Solution to centos7 network restart error: 1. Check whether NetworkManager is closed; 2. Check whether HWADDR is consistent; 3. Add "net.ifnames=0 biosdevname=0" in grub; 4. Generate boot menu ; 5. Restart.

The operating environment of this article: CentOS 7 system, Dell G3 computer.

centos7 What should I do if an error occurs when the network restarts?

New system centos7 restarts the network and reports an error

Scenario: New centos7 on an unknown cloud , it cannot start after changing the IP. Use systemctl status network to view the results as follows:

Troubleshooting process:

1) Is NetworkManager closed?

systemctl stop NetworkManager

2) Check whether HWADDR is consistent

Configuration file /etc/sysconfig/network-scripts/ifcfg-eno16777984

and

ip addr view

##3) Add net in the configuration file /etc/sysconfig/grub .ifnames=0 biosdevname=0

4) Generate boot menu

grub2-mkconfig -o /boot/grub2/grub.cfg

##5) Restart

Recommended tutorial: "

centos tutorial

"

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