I'm using http://mirror.centos.org/centos/7/paas/x86_64/openshift-origin310 and http://mirror.centos.org/centos/7/extras/x86_64/Packages/centos-release-ansible26-1-3.el7.centos.noarch.rpm for ansible 2.6 Installation fails early because ansible 2.6 has a dependency on python-keyczar which is not provided by either of the two above repos. If I use https://buildlogs.centos.org/centos/7/paas/x86_64/openshift-origin310/ which does provide python-keyczar then installation fails because this origin310 repo provides python2-docker which is incompatible with atomic-1.22 If I use http://cbs.centos.org/repos/paas7-openshift-origin310-candidate/x86_64/os/Packages/ this also provides python2-docker