RHEL and Fedora prefers chrony as default ntp client/server implementation: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/ch-configuring_ntp_using_the_chrony_suite It's looks strange to use different time servers on different nodes, basically all of my non-tripleo nodes has chorny. For example the RHEL cloud image has a default running chronyd. Please default to chrony for consistency.
*** This bug has been marked as a duplicate of bug 1535066 ***