short_hostname() strips everything from the first period, which is
right for an FQDN and destructive for an IPv4 address:

short_hostname()

{ echo $(sed "s/\..*//" <<< $1) }

short_hostname 10.135.230.14 -> 10

yml_entities() in yaml.sh appends every facet entity to
$logdir/node.$(short_hostname $host).yml. When the facets are named by
IP - which is what h2name_or_ip requires for ${facet}failover_HOST, since
given a hostname it expands `hostname -I` to every ethernet address and
emits non-LNet NIDs - every role from every server lands in one file:

node.10.yml:
node_type: MGS node_name: 10
node_type: MDS 1 node_name: 10
node_type: MDS 2 node_name: 10
node_type: OST 1..4 node_name: 10

That file has no Build:/Node: header, because the header is written by
yml_node() into node.<host>.yml under the untruncated name. So the run
produces a bare YAML sequence that a results store rejects, and the real
per-node files carry no entities at all - no roles for any server.

Entries are also duplicated: facet_passive_host is truncated to the same
"10", so each role is written twice.

Fix: leave an IPv4 address alone. An address has no domain to strip.

Reproducible on any configuration whose ${facet}_HOST values are IP
addresses rather than names.