Linux - yum configuration Ali cloud images

1, before the backup repository files

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.back

2, Ali cloud repository file download

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

3. Clear the cache

yum clean all
yum makecache