Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile There are no enabled repos.
解决方案：
1、备份 mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup 2、 wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo 3、 yum makecache