[CentOS] Unable to install extras "centos-release-scl" "epel-release"

Tue Oct 11 22:09:21 UTC 2016

  I have CentOS7 32-bit x86 AltArch in a VM.  Following advice I found
on Google, I tried stuff like "sudo yum install centos-release-scl" and
"sudo yum install epel-release".  They came back with...

No package centos-release-scl available.
No package epel-release available.

  What am I missing?

-- 
Walter Dnes <waltdnes at waltdnes.org>