Tips for using Linux

Complete some common problems encountered in Linux.

Modify the network card ens33 to eth0

When using RHEL and Centos7, I found that the network card name has changed to EnoX, which is quite strange. Now change it back to the old name eth0 which looks pleasing to the eye.

Back up the /etc/sysconfig/Change the network card name ens33 to eth0 under rhel and centos7 file
cp /etc/sysconfig/Change the network card name ens33 to eth0 under rhel and centos7 /etc/sysconfig/Change the network card name ens33 to eth0 under rhel and centos7.bak
Edit /etc/sysconfig/Change the network card name ens33 to eth0 under rhel and centos7 file
vim /etc/sysconfig/Change the network card name ens33 to eth0 under rhel and centos7
Add
net.ifnames=0 biosdevname=0
within the double quotes after GRUB_CMDLINE_LINUX As shown in the figure after adding, the order within the quotation marks has no effect

Pay attention to the spaces between each parameter.
Rebuild the GRUB configuration file
Change the network card name ens33 to eth0 under rhel and centos72-mkconfig -o /boot/Change the network card name ens33 to eth0 under rhel and centos72/Change the network card name ens33 to eth0 under rhel and centos7.cfg
Back up the network card configuration file and change the network card file to eth0
cp /etc/sysconfifg/network-scripts/ifcfg-ens33 /etc/sysconfifg/network-scripts/ifcfg-ens33.bak
mv /etc/sysconfifg/network-scripts/ifcfg-ens33 /etc/sysconfifg/network-scripts/ifcfg-eth0
ens33 may be different from yours. To be specific, check your own ensx with ifconfig first.
Edit the /etc/sysconfig/network-scripts/ifcfg-eth0 file
vim /etc/sysconfig/network-scripts/ifcfg-eth0
Just change the NAME and DEVICE from the original ens33 to eth0.
Just restart the system.

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