Ceilometer get vm cpu_util with Stein version
In stein version, ceilometer remove polling for cpu_util.
Follow this doc: https://docs.openstack.org/ceilometer/stein/admin/telemetry-measurements.html#openstack-compute
only cpu and vcpus.
I did not find any material explaining how to get vm cpu_util.
The Rocky release notes for Ceilometer (announced on the distribution list, but for some reason not on the releases web site) say that cpu_util and *.rate meters and usage of transformers in Ceilometer pipelines are deprecated.
You are supposed to use Gnocchi for rate calculations.