Centos yum modify the default source into domestic source

1, first back up the system comes with yum source profile /etc/yum.repos.d/CentOS-Base.repo

[root@localhost ~]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2, yum source configuration file into the folder where you

[root@localhost ~]# cd /etc/yum.repos.d/

3, 163 downloads yum configuration file to the source folder above the file

CentOS7
[root@localhost yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
CentOS6
[root@localhost yum.repos.d]# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
CentOS5
[root@localhost yum.repos.d]# wget http://mirrors.163.com/.help/CentOS5-Base-163.repo

4, run yum makecache generate cache

[root@localhost yum.repos.d]# yum makecache