Yum命令查询repo上配置的地址，获取相应的rpm包进行安装；配置centos的DNS，国内一个，原yum源码CD/etc/yum。repos.d/mvcentosbase，Repocentosbase.repo _ bak来自国外VI/etc/resolv
Yum命令查询repo上配置的地址，获取相应的rpm包进行安装；配置centos的DNS，国内一个，原yum源码CD/etc/yum。repos.d/mvcentosbase，Repocentosbase.repo _ bak来自国外VI/etc/resolv