CentOS yum换源

1.备份系统自带yum源

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

2.进入yum源配置文件所目录

cd /etc/yum.repos.d/

3.下载yum源配置文件

wget http://mirrors.163.com/.help/CentOS6-Base-163.repo

4.运行yum makecache生成缓存

yum makecache

5.更新

 yum -y update

CentOS源地址

#163

#CentOS5 
wget http://mirrors.163.com/.help/CentOS5-Base-163.repo

#CentOS6
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo

#CentOS7
wget http://mirrors.163.com/.help/CentOS7-Base-163.repo

#aliyun

#CentOS5
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

#CentOS6
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

#CentOS7
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo