Невозможно включить модуль promenteus:

# ceph mgr module enable prometheus
Error ENOENT: module 'prometheus' reports that it cannot run on the active manager daemon: cannot import name 'packaging' from 'pkg_resources' (/lib64/python3/site-packages/pkg_resources/__init__.py) (pass --force to force enablement)

Действительно, модуль рассчитывает на старые setuptools:

$ PYTHONPATH=/usr/share/ceph/ python3 -c 'import mgr.prometheus'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/share/ceph/mgr/prometheus/__init__.py", line 2, in <module>
    from .module import Module, StandbyModule
  File "/usr/share/ceph/mgr/prometheus/module.py", line 4, in <module>
    from pkg_resources import packaging  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: cannot import name 'packaging' from 'pkg_resources' (/usr/lib64/python3/site-packages/pkg_resources/__init__.py)