介绍下centos系统更换阿里云yum源

1.     首先备份下旧的yun源

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

2.     下载新的CentOS-Base.repo到/etc/yum.repos.d 根据您系统的版本选择下载

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

Centos8

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

3.     更新缓存

yum clean all && yum makecache

yum update -y