centos7本地yum源配置

1.查看系统本身存在的版本rpm-qa|grepyum2.卸载centos7上存在的yum安装源包rpm-e源包--nodeps3.下载yum源包（http://mirrors.163.com/centos/7/os/x86_64/Packages/）yum-metadata-parser-1.1.4-10.el7.x86_64PackageKit-yum-1.0.7-6.el7.centos.x86_64yum-utils-1.1.31-40.el7.noarch下方两个一起装yum-plugin-fastestmirror-1.1.31-40.el7.noarchyum-langpacks-0.4.2-7.el7.noa