一、epel
緩存
rpm -ivh http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpmide
二、163get
yum install -y wgetit
wget http://mirrors.163.com/.help/CentOS7-Base-163.repo -P /etc/yum.repos.d/class
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backuptest
三、重建緩存
yum
yum clean alldi
yum makecacheview