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This article mainly explains "how to modify the network card em1 to eth0 in the CentOS system." interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next let the editor to take you to learn "CentOS system how to modify the network card em1 to eth0"!

Question:

After some Dell servers installed the Linux operating system, they found that the name of the network card had become em1.

Solution:

Change the name of the Nic to eth0. Take the CentOS operating system as an example.

One: modify the system grub

Vi / boot/grub/grub.conf # add biosdevname=0 after kernel parameter

Kernel / vmlinuz-2.6.32-573.7.1.el6.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD rd_LVM_LV=VolGroup/lv_swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM biosdevname=0 rhgb quiet

: wq! # Save exit

2. Modify the Nic naming rule configuration file of udev

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

This server has four network cards, and the identified network card names are: em1, em2, em3, em4 (em code starts with 1, no em0)

We need to change the above em1 to eth0, em2 to eth2, em3 to eth3, em4 to eth4

: wq! # Save exit

Modify the name of the current network card configuration file

Cd / etc/sysconfig/network-scripts/ # enter the Nic configuration file directory

Mv ifcfg-em1 ifcfg-eth0 # rename

Mv ifcfg-em2 ifcfg-eth2

Mv ifcfg-em3 ifcfg-eth3

Mv ifcfg-em4 ifcfg-eth4

4. Modify the contents of the configuration file of the network card and change all em to eth.

Cd / etc/sysconfig/network-scripts/ # enter the Nic configuration file directory

Vi ifcfg-eth0 # change the em1 in it to eth0

Vi ifcfg-eth2 # change the em2 in it to eth2

Vi ifcfg-eth3 # change the em3 in it to eth3

Vi ifcfg-eth4 # change the em4 in it to eth4

: wq! # Save and exit after the modification is completed

Restart the boot system to make the above changes effective

Shutdown-r now # restart

At this point, the CentOS system modifies the network card em1 to eth0.

At this point, I believe you have a deeper understanding of "CentOS system how to modify the network card em1 to eth0". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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