Running stack.sh on Fedora 21 requires several updates via rawhide repo. I am not quite sure that systemd in meantime requires an upgrade via rawhide, however I did it just in case. Several services mentioned bellow have to be enabled to support reboots, firewalld has to be be disabled after after stack.sh completion, due to devstack is not packstack (RDO). F21 VM been used for devstack install had nested kvm enabled, 8 GB RAM and 3 VCPUS
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