Thanks First.

Mail to ask why I try to install RDO source with yum, it response a Error, and this issue is fully common I saw in google:

[root@OpenStack ~]# yum install https://repos.fedorapeople.org/repos/openstack/openstack-juno/rdo-release-juno-1.noarch.rpm

Loaded plugins: fastestmirror, priorities

Setting up Install Process

Repository base is listed more than once in the configuration

Repository updates is listed more than once in the configuration

Repository extras is listed more than once in the configuration

Repository centosplus is listed more than once in the configuration

Repository contrib is listed more than once in the configuration

Cannot open: https://repos.fedorapeople.org/repos/openstack/openstack-juno/rdo-release-juno-1.noarch.rpm. Skipping.

Error: Nothing to do