Linux Learning Notes - yum configuration Ali cloud sources

Enter the directory: 
cd /etc/yum.repos.d

Backup: 
mkdir repobak 
mv * .repo repobak /

Download CentOS-Base.repo path to /etc/yum.repos.d/ 

wget -O /etc/yum.repos.d/CentOS-Base.repo HTTP: // mirrors.aliyun.com/repo/Centos-7. repo

Clear cache: 
yum Clean All

Rebuild cache: 
yum makecache