CentOS添加163源

1.备份/etc/yum.repos.d/CentOS-Base.repo

2.下载repo文件, 放入/etc/yum.repos.d/(操作前请做好相应备份)

wget http://mirrors.163.com/.help/CentOS7-Base-163.repo

mv CentOS7-Base-163.repo /etc/yum.repos.d/

3.运行以下命令生成缓存

yum clean all

yum makecache