超简单将Centos的yum源更换为国内的阿里云源

Ali-OSM

CentOS

1、备份

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

2、下载新的CentOS-Base.repo 到/etc/yum.repos.d/

CentOS 5

wget
-O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo[/code] 

CentOS 6
wget
-O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo[/code] 

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

3、之后运行yum makecache生成缓存