将Centos的yum源更换为国内的阿里云(163)源

http://mirrors.aliyun.com/

CentOS系统更换软件安装源
第一步：备份(或者复制)你的原镜像文件，以免出错后可以恢复。

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

第二步：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
#附加163的源地址
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS5-Base-163.repo 

#CentOS 6 
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo  
#附加163的源地址
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS6-Base-163.repo 

#CentOS 7 
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
#附加163的源地址
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo 

 

 

 

更改CentOS-Media.repo使其为不生效(CentOS 7默认不用改)：

enabled=0

第三步：运行yum makecache生成缓存

yum clean all
yum makecache