工具&方法Error: Failed to download metadata for repo ‘AppStream‘: Cannot prepare internal mirrorlist: No U… 下午服务器重装了,centos 7升级成centos8,然后出现了以下问题: Error: Failed to download metadata for repo 'AppStream': Cann... 05月01日1,208 views评论CentOS7 CentOS 8 阅读全文