CentOS更改yum源与更新系统

本身的yum源不知道何时给改毁了……搜到了个超简单的方法将yum源更换为阿里的源centos

 

彻底参考缓存

http://mirrors.aliyun.com/help/centos?spm=5176.bbsr150321.0.0.d6ykiDcode

 

一、备份

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

二、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

 

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

三、以后运行yum makecache生成缓存