CentOS-Base.repo 已经不复存在,起码在我主机上现在是这个情况:[root@localhost yum.repos.d]# ls
CentOS-Linux-AppStream.repo CentOS-Linux-HighAvailability.repo epel-multimedia.repo
CentOS-Linux-BaseOS.repo CentOS-Linux-Media.repo epel-playground.repo
CentOS-Linux-ContinuousRelease.repo CentOS-Linux-Plus.repo epel.repo
CentOS-Linux-Debuginfo.repo CentOS-Linux-PowerTools.repo epel-testing-modular.repo
CentOS-Linux-Devel.repo CentOS-Linux-Sources.repo epel-testing.repo
CentOS-Linux-Extras.repo docker-ce.repo rpmfusion-free-updates.repo
CentOS-Linux-FastTrack.repo epel-modular.repo rpmfusion-free-updates-testing.repo