Issue with yum https

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-ju no-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-ju no-1.noarch.rpm. Skipping. Error: Nothing to do