centos 8 Failed to download metadata for repo ‘AppStream’: Cannot prepare internal mirrorlist: No URLs in mirrorlist
查询后发现问题的原因是Centos8于2021年年底停止了服务,a56爆大奖在线娱乐们在使用yum源安装时候,出现下面错误“错误:Failed to download metadata for repo ‘AppStream’: Cannot prepare internal mirrorlist: No URLs