Centos7、8更换镜像源

一、删除旧的yum环境

rm -rf /etc/yum.repos.d/*

二、下载新的Base源

CentOS 7

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

CentOS 8

curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

三、下载新的EPEL源

CentOS 7

curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

CentOS 8

curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-archive-8.rep

四、清理缓存并生成新的缓存

yum clean all
yum makecache