This will always give errors when running it from a RHEL 8 director (after the upgrade) to RHEL 7 overcloud nodes (not upgraded yet). If you specify the --python-interpreter option this is solved. (BZ https://bugzilla.redhat.com/show_bug.cgi?id=1873470) Reported by: ianverwerft https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/16.1/html/framework_for_upgrades_13_to_16.1/initial-steps-for-overcloud-preparation#annotations:34e3f363-b876-4b72-aeff-e7edb8929dd4
*** This bug has been marked as a duplicate of bug 1908569 ***