5 Sep
2023
5 Sep
'23
3:53 p.m.
Hello there,
could you perhaps provide some more information on how (or where) this
got fixed? It doesn't seem to be fixed yet on the latest Ceph Quincy
and Reef versions, but maybe I'm mistaken. I've provided some more
context regarding this below, in case that helps.
On Ceph Quincy 17.2.6 I'm encountering the following error when trying
to enable the dashboard (so, the same error that was posted above):
root@ceph-01:~# ceph --version
ceph version 17.2.6 (810db68029296377607028a6c6da1ec06f5a2b27) quincy (stable)
root@ceph-01:~# ceph mgr module enable dashboard
Error ENOENT: module 'dashboard' reports that it cannot run on the active
manager daemon: PyO3 modules may only be initialized once per interpreter process (pass
--force to force enablement)
I was then able to find this Python traceback in the systemd journal:
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: 2023-09-04T18:39:51.438+0200 7fecdc91e000 -1
mgr[py] Traceback (most recent call last):
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/usr/share/ceph/mgr/dashboard/__init__.py", line 60, in <module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from .module import Module, StandbyModule
# noqa: F401
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/usr/share/ceph/mgr/dashboard/module.py", line 30, in <module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from .controllers import Router,
json_error_page
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/usr/share/ceph/mgr/dashboard/controllers/__init__.py", line 1, in
<module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from ._api_router import APIRouter
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/usr/share/ceph/mgr/dashboard/controllers/_api_router.py", line 1, in
<module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from ._router import Router
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/usr/share/ceph/mgr/dashboard/controllers/_router.py", line 7, in
<module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from ._base_controller import
BaseController
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/usr/share/ceph/mgr/dashboard/controllers/_base_controller.py", line 11, in
<module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from ..services.auth import AuthManager,
JwtManager
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/usr/share/ceph/mgr/dashboard/services/auth.py", line 12, in <module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: import jwt
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/lib/python3/dist-packages/jwt/__init__.py", line 1, in <module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from .api_jwk import PyJWK, PyJWKSet
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/lib/python3/dist-packages/jwt/api_jwk.py", line 6, in <module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from .algorithms import
get_default_algorithms
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/lib/python3/dist-packages/jwt/algorithms.py", line 6, in <module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from .utils import (
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/lib/python3/dist-packages/jwt/utils.py", line 7, in <module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from
cryptography.hazmat.primitives.asymmetric.ec import EllipticCurve
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/lib/python3/dist-packages/cryptography/hazmat/primitives/asymmetric/ec.py",
line 11, in <module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from cryptography.hazmat._oid import
ObjectIdentifier
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: File
"/lib/python3/dist-packages/cryptography/hazmat/_oid.py", line 7, in
<module>
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: from cryptography.hazmat.bindings._rust
import (
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: ImportError: PyO3 modules may only be
initialized once per interpreter process
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: 2023-09-04T18:39:51.438+0200 7fecdc91e000 -1
mgr[py] Class not found in module 'dashboard'
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: 2023-09-04T18:39:51.438+0200 7fecdc91e000 -1
mgr[py] Error loading module 'dashboard': (2) No such file or directory
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: 2023-09-04T18:39:51.470+0200 7fecdc91e000 -1
mgr[py] Module progress has missing NOTIFY_TYPES member
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: 2023-09-04T18:39:51.502+0200 7fecdc91e000 -1
mgr[py] Module iostat has missing NOTIFY_TYPES member
Sep 04 18:39:51 ceph-01 ceph-mgr[15669]: 2023-09-04T18:39:51.502+0200 7fecdc91e000 -1
log_channel(cluster) log [ERR] : Failed to load ceph-mgr modules: dashboard
As the traceback above reveals, the dashboard uses `PyJWT`, which in
turn uses `cryptography`, and `cryptography` uses `PyO3`.
That led me to an issue[0] regarding this on `cryptography`'s side;
the Ceph Dashboard is apparently not the only thing that's affected
by this.
As it turns out, the maintainer of the Ceph AUR package has also
recently stumbled across this while re-packaging Ceph Reef 18.2.x
and has listed many more details regarding this issue[1].
Hope this helps!
[0]: https://github.com/pyca/cryptography/issues/9016
[1]: https://github.com/bazaah/aur-ceph/issues/20