配置yum源

配置阿里雲yum源

1.備份

mkdir repobak

mv *.repo repoback/

2.下載Centos-Base.repo 到路徑/etc.yum.repos.d/

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

3.清除快取

yum clean all

4.重建快取

yum makecache