Centos7 更换阿里yum源

#yum CentOS7更换yum为阿里源备份本地源mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bak获取阿里源配置文件wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo更新epel仓库wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo更新cacheyum makecache