解决方法:切换到 CentOS Vault 进入存储库配置文件夹 cd /etc/yum.repos.d/ 修改CentOS-Base.repo [base] name=CentOS-$releasever - Base baseurl=http://archive.kernel.org/centos-vault/7.9.2009/os/$basearch/ enabled=1 gpgcheck=1 [updates] name=CentOS-$releasever - Updates baseurl=http://archive...