到目前为止我所做的：
在我的根上，我做到了：
wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
然后
ls
我能够看到 epel-release-latest-6.noarch.rpm
然后yum install epel-release-latest-6.noarch.rpm
遇到以下问题：
Loaded plugins: aliases, changelog, kabi, presto, product-id, refresh-packagekit, replace, security, subscription-manager, tmprepo, verify,
: versionlock
Loading support for Red Hat kernel ABI
Setting up Install Process
Examining epel-release-latest-6.noarch.rpm: epel-release-6-8.noarch
epel-release-latest-6.noarch.rpm: does not update installed package.
Error: Nothing to do