本身的yum源不知道何时给改毁了……搜到了个超简单的方法将yum源更换为阿里的源centos
彻底参考缓存
http://mirrors.aliyun.com/help/centos?spm=5176.bbsr150321.0.0.d6ykiDcode
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
get
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo