centos 切换阿里源

阿里云Linux安装镜像源地址:http://mirrors.aliyun.com/

第一步:备份原镜像文件

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

第二步:下载源文件CentOS-Base.repo 到/etc/yum.repos.d/

注:根据自己的版本选择不同的repo文件

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
http://mirrors.163.com/.help/CentOS7-Base-163.repo(163源备用)

Centos 8
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo

第三步:运行yum makecache生成缓存

yum clean all

yum makecache

第四步:等待下载完成

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