Solution for eth0 device not found in centos

Problem description:

The ifconfig command cannot find the eth0 device, and the/etc/sysconfig/network-scripts/contains only the ifcfg-Lo file, without the ifcfg-eth0.

 

Temporary solution 1:

Run the ifconfig eth0 192.168.1.x command to set the eth0 IP address. This method is only a temporary solution. After the system is restarted, it becomes invalid.

 

Permanent solution 2:

1. Create a ifcfg-eth0 file under the/etc/sysconfig/network-scripts/directory;

2. correctly set the device, bootproto, onboot, ipaddr, gateway, dns1, domain, netmask, network, name and so on of the ifcfg-eth0, such:

Device = eth0 physical device name

Ipaddr = 192.168.1.x IP Address

Netmask = 255.255.255.0 Subnet Mask

Network = 192.168.1.0 indicates the network, which is automatically calculated using the IP address and subnet mask.

Gateway = 192.168.1.1 gateway address

Broadcast = 192.168.1.255 broadcast address, automatically calculated by IP address and subnet mask

Onboot = [Yes | no] whether to activate the device during boot

Userctl = [Yes | no] Can a non-root user control the device?

Bootproto = [none | static | BOOTP | DHCP] Protocol not used during boot | static allocation | BOOTP protocol | DHCP protocol

Hwaddr = 00: 13: D3: 27: 9f: 80 MAC address

Name = eth0 name

3. After the above settings, it can be successful under normal circumstances. If there is still a problem, in the file/etc/rc. d/RC. add IFUP eth0 (/etc/rc. the local script is executed after all other initialization scripts are executed ).

4. Restart your computer. OK.

Other network control commands:

Ifdown eth0, ifconfig eth0 down // disable the network

IFUP eth0, ifconfig eth0 up // enable the network

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Set the DNS Configuration File Location/etc/resolv. conf

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Service Network start // start a network service

Service Network stop // stop a network service

Srvice network restart // restart the network service

Service Network Status // view the network service status

This article from the "Half city smoke sand" blog, please be sure to keep this source http://vabc1314.blog.51cto.com/2164199/1537784