1, you can choose your own Linux version from Ali's Mirror site:http://mirrors.aliyun.com/
2, if it is CentOS can see the following methods:
1. Backup
Mv/etc/yum.repos.d/centos-base.repo/etc/yum.repos.d/centos-base.repo.backup
2, download the new Centos-base.repo to/etc/yum.repos.d/
CentOS 5
Wget-o/etc/yum.repos.d/centos-base.repo Http://mirrors.aliyun.com/repo/Centos-5.repo
CentOS 6
Wget-o/etc/yum.repos.d/centos-base.repo Http://mirrors.aliyun.com/repo/Centos-6.repo
CentOS 7
Wget-o/etc/yum.repos.d/centos-base.repo Http://mirrors.aliyun.com/repo/Centos-7.repo
3. After running Yum Makecache generate cache
3, after the operation of the above steps to complete the Yum source replacement
This article is from the "Chen blog" blog, make sure to keep this source http://chenshengang.blog.51cto.com/4399161/1733022
Replace the source of the CentOS Yum