Had problems with this a few months back too. 

Used this thread to get rpms working again. 

https://github.com/repoforge/rpms/issues/375

/Max 

On Dec 22, 2016 07:47, William Bauer <bbauer@scripps.edu> wrote:
I'm replacing a poorly performing VM running CentOS6 with a real
computer running CentOS7.  The two commands (listed below) early on in
the CentOS7 instructions appear to be invalid.  I'm not super Linux
literate as I know more of the BSD and Solaris worlds.  Are there
replacement sources for these?

Here are the ones currently failing (I've tried no more of the
instructions).  I suppose these could be only temporary failures:

rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt

rpm -Uvh
http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el7.rf.x86_64.rpm

Any help is appreciated.

Bill
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