CentOS7 Replace Yum Source

The replacement of the Yum source is roughly divided into three steps: Backup, replacement, update

First, backup
Rename the original file to the backup in the directory

CD/ETC/YUM.REPOS.D
MV Centos-base.repo centos-base.repo.old

Second, replace
First download the desired source and rename it.
Source of Sohu: Http://mirrors.sohu.com/help/CentOS-Base-sohu.repo
163 Source: Http://mirrors.163.com/.help/CentOS6-Base-163.repo
Source of Aliyun: Http://mirrors.aliyun.com/repo/Centos-7.repo
After downloading, rename the new source to Centos-base.repo

wget http://mirrors.aliyun.com/repo/Centos-7.repo
MV Centos-7.repo Centos-base.repo

Third, update
Let yum cache new data

Yum Update

After a long wait can be used, flattered.