CENTOS7 cannot find a valid baseurl for repo base

Today installs the Centosmini version under the virtual machine, the first thing after installation is Yum update

But there's a mistake: cannot find a valid baseurl for repo base base

Baidu has a half-day also not a very reliable, finally Google a bit, immediately came out.

The specific link here Http://unix.stackexchange.com/questions/22924/how-can-i-fix-cannot-find-a-valid-baseurl-for-repo-errors-on-centos

I am using one of the following:

cd/etc/sysconfig/network-scripts/

Then find the file that ifcfg begins with, open it up.

There are the following code in the first three lines, add the next two lines of DNS, keep and exit, and then continue to execute two ifdown and Ifup command, and then ping www.baodu.com Normal, there is no problem to update yum.

onboot=nonm_controlled=Nobootproto=dhcpDNS1=8.8.8.8DNS2 =4.2.2.2

Restart the network interface

Ifdown eth0ifup eth0

CENTOS7 cannot find a valid baseurl for repo base