Centos7更换阿里云的yum源

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
相关链接
官方主页: http://www.centos.org/ 
邮件列表: http://www.centos.org/modules/tinycontent/index.php?id=16 
论坛: http://www.centos.org/modules/newbb/ 
文档: http://www.centos.org/docs/ 
Wiki: http://wiki.centos.org/