CentOS 7 / RHEL 7: How To Change Network Interface From Eno* To Eth0
After you installed CentOS 7.0 or RHEL 7.0 system, you maybe notice that the default name of network interface was changed from “Eth*” to “Eno*“. How do I change network interface name to “Eth0” in CentOS 7.0? This post will show you the ways to change network interface.
CentOS 7 Change Network Interface Name
Step1# issue the ifconfig command to check the current network interface information, type:
ifconfig
Outputs:
[root@localhost Desktop]# ifconfig eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.42.129 netmask 255.255.255.0 broadcast 192.168.42.255 inet6 fe80::20c:29ff:fec7:25ae prefixlen 64 scopeid 0x20<link> ether 00:0c:29:c7:25:ae txqueuelen 1000 (Ethernet) RX packets 200948 bytes 253071365 (241.3 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 56043 bytes 3420351 (3.2 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Step2# edit “/etc/sysconfig/grub” configuration file using “vim” command:
before:
[root@localhost Desktop]# vim /etc/sysconfig/grub GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/swap vconsole.font=latarcyrheb-sun16 rd.lvm.lv=centos/root crashkernel=auto vconsole.keymap=us rhgb quiet" GRUB_DISABLE_RECOVERY="true"
Then searching for “GRUB_CMDLINE_LINUX” line and appending the following content “net.ifnames=0 biosdevname=0“, just like the below:
GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/swap vconsole.font=latarcyrheb-sun16 rd.lvm.lv=centos/root crashkernel=auto vconsole.keymap=us rhgb quiet net.ifnames=0 biosdevname=0" GRUB_DISABLE_RECOVERY="true"
Step3# Using “grub2-mkconfig” command to re-generate a new grub configuration file, type:
grub2-mkconfig -o /boot/grub2/grub.cfg
Outputs:
[root@localhost Desktop]# grub2-mkconfig -o /boot/grub2/grub.cfg Generating grub configuration file ... Found linux image: /boot/vmlinuz-3.10.0-123.el7.x86_64 Found initrd image: /boot/initramfs-3.10.0-123.el7.x86_64.img Warning: Please don't use old title `CentOS Linux, with Linux 3.10.0-123.el7.x86_64' for GRUB_DEFAULT, use `Advanced options for CentOS Linux>CentOS Linux, with Linux 3.10.0-123.el7.x86_64' (for versions before 2.00) or `gnulinux-advanced-dbedd8fa-5d86-4ea0-8551-8444a48cd44f>gnulinux-3.10.0-123.el7.x86_64-advanced-dbedd8fa-5d86-4ea0-8551-8444a48cd44f' (for 2.00 or later) Found linux image: /boot/vmlinuz-0-rescue-3303e35a730a41e3b4e99b544acea205 Found initrd image: /boot/initramfs-0-rescue-3303e35a730a41e3b4e99b544acea205.img done
Step4# Rename “Eno” network file using”mv”command, type:
$sudo mv /etc/sysconfig/network-scripts/ifcfg-eno16777736 /etc/sysconfig/network-scripts/ifcfg-eth0
Step5# Edit “/etc/sysconfig/network-scripts/ifcfg-eth0 ” configuration file and set the value of “Name” field to “eth0”.
# vim /etc/sysconfig/network-scripts/ifcfg-eth0 TYPE=Ethernet BOOTPROTO=dhcp DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=no NAME=eth0 UUID=5ae10208-855b-41af-99e7-0673d3792d15 ONBOOT=yes HWADDR=00:0C:29:C7:25:AE PEERDNS=yes PEERROUTES=yes IPV6_PEERDNS=yes IPV6_PEERROUTES=yes
Step6# reboot system, after rebooting system, using “ifconfig” command check network interface information again.
[root@localhost Desktop]# ifconfig eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.42.129 netmask 255.255.255.0 broadcast 192.168.42.255 inet6 fe80::20c:29ff:fec7:25ae prefixlen 64 scopeid 0x20<link> ether 00:0c:29:c7:25:ae txqueuelen 1000 (Ethernet) RX packets 49 bytes 5285 (5.1 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 76 bytes 8540 (8.3 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
done….
