Centos – Device “eth0” does not exist

centosethernetnetwork-interface

i am using centos 7. I am typing the command

ip addr show eth0

but its reply Device "eth0" does not exist.

Best Answer

In CentOS, network interfaces are named differently. So they aren't called eth0 or eth1, but rather have names like eno1 or enp2s0. (Source.)

Run ip addr to see how these interfaces are named on your system.

These names are defined in /etc/sysconfig/network-scripts/ifcfg-<iface>. You can change their names if you really wanted to, but I don't recommend it.

Related Solutions

CentOS 6.3 Device eth0 does not seem to be present (Minimal non-cloned setup)

In my situation, I changed the network adapter configuration of my hypervisor after the installation of CentOS. What happened in this case is that the old interface eth0 no longer existed but a new one called eth1 did.

ls /sys/class/net
eth1 lo

I changed the network config /etc/sysconfig/network-scripts/ifcfg-eth0 to use DEVICE=eth1 and it worked again.

Network Interface – Creating eth0 with Consistent Network Device Naming

Have you tried creating a blank /etc/udev/rules.d/80-net-name-slot.rules?

Since Udev v197, udev has implemented predictable network interface names, by creating a blank file in that path then rebooting, you should have your interface names back to what they were.

Reference: Predictable Network Interface Names

Best Answer

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CentOS 6.3 Device eth0 does not seem to be present (Minimal non-cloned setup)

Network Interface – Creating eth0 with Consistent Network Device Naming

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