redhatyum找不到

RedHat6.8安装docker，执行yum命令安装驱动,报centos6源找不到如何解决？

环境：Linux 系统：redHat6.8 安装：docker 执行：yum install -y yum-utils device-mapper-persistent-data lvm2 命令安装驱动时，报错：Loaded plugins: fastestmirror, product-id, search-disabled-repos, subscription-manager This ...

为什么redhat 执行yum会找不到这条命令呢

我想开通redhat 上面的vsftp服务，结果出现如下错误：iZ944rwbt3xZ:/ # yum install vsftpd -yIf 'yum' is not a typo you can run the following command to lookup the package that contains the binary:command-not-found yum-bash...