CenterOS

https://developer.aliyun.com/mirror/centos?spm=a2c6h.13651102.0.0.3e221b118Y6eBS

yum install -y wget
cd /etc/yum.repos.d/
mv CentOS-Base.repo CentOS-Base.repo.back
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
yum clean all
yum makecache

yum -y update