Nova_resources_ all stopped working on different severs

Grafana Prometheus
1

Using prometheus-openstack-exporter

  1. nova_resources_ram_mbs
  2. nova_resources_vcpus
  3. nova_resources_disk_gbs

these 3 stopped working on two different servers running against two different openstacks.
restarting services, confirmed ports still working, etc.

Commands like nova_instances and nova_quotes… still work

running Grafana v6.4.3