Troubleshooting CentOS Yum Update error

Installed CentOS 7 in the server yesterday, encountered the Yum update failure problem. This problem is limited by the mirror address.

The following error is displayed:

This error is typically the problem with the source of the Mirror:

Mirror connection Error

Consider using a domestic mirror, such as a 163 image.

Workaround:

Here is the CentOS 7 example, the other version to change the number is good, take the large version number

Cd/etc/yum.repos.d

MV Centos-base.repo Centos-base.repo.bak

Vi? Centos-base.repo

[Base]
name=red Hat Enterprise Linux 7.0-base
baseurl=http://mirrors.163.com/centos/7/os/$basearch/
Gpgcheck=1
Gpgkey=http://mirrors.163.com/centos/rpm-gpg-key-centos-7
[UPDATE]
name=red Hat Enterprise Linux 7.0-updates
baseurl=http://mirrors.163.com/centos/7/updates/$basearch/
Gpgcheck=1
Gpgkey=http://mirrors.163.com/centos/rpm-gpg-key-centos-7
[Extras]
name=red Hat Enterprise Linux 7.0-extras
baseurl=http://mirrors.163.com/centos/7/extras/$basearch/
Gpgcheck=1
Gpgkey=http://mirrors.163.com/centos/rpm-gpg-key-centos-7

Save it.
may have just changed to not take effect immediately need to buffer a period of time, I just changed when the reality is not, so I went to eat, come back to find somehow good!

If the following error occurs:

is generally a DNS problem

The test method is ping outside the network, found that the ping is not the problem.

Workaround:

echo "NameServer 8.8.8.8" >>/etc/resolv.conf

or edit the parse file

Vi/etc/resolv.conf

Add NameServer 8.8.8.8
Save to exit.
Then yum update is available.

Troubleshooting CentOS Yum Update error