CentOS 8 镜像源问题

1、ailed to download metadata for repo ‘appstream’: Cannot prepare internal mirrorlist 问题修复

1.1、进入yum的repos

cd /etc/yum.repos.d/

1.2、修改所有的CentOS 内容

sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*

sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*

1.3、修改镜像源头

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

yum clean all

yum makecache