## CentOS7更换镜像源 ### 1、先安装wget *yum install -y wget*   ### 2、打开阿里镜像http://mirrors.aliyun.com/ 点击，帮助，查看详情： ### 3、下载CentOS 7的对应的repo文件 wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo #或者 curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo ### 4、更新镜像源 ``` yum clean all yum makecache yum -y update ```