1 2 3 4 5 6 7 [[email protected] yum.repos.d]# yum makecache Repository epel is listed more than once in the configuration CentOS-8 - AppStream 3.2 kB/s | 2.5 kB 00:00 Errors during downloading metadata for repository 'AppStream': - Status code: 404 for http://mirrors.cloud.aliyuncs.com/centos/8/AppStream/x86_64/os/repodata/repomd.xml (IP: Error: Failed to download metadata for repo 'AppStream': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried [[email protected] yum.repos.d]# 查了各种资