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Hi,

I am experiencing a problem in magnum 12.0.0 that conductor service
randomly goes down. I am using ubuntu 20.04.

root at controller ~(keystone_ubuntu20_new)# openstack coe service list
+----+------+------------------+-------+----------+-----------------+---------------------------+---------------------------+
| id | host | binary           | state | disabled | disabled_reason |
created_at                | updated_at                |
+----+------+------------------+-------+----------+-----------------+---------------------------+---------------------------+
|  1 | None | magnum-conductor | down  | False    | None            |
2021-05-03T10:33:16+00:00 | 2021-05-05T21:48:39+00:00 |
+----+------+------------------+-------+----------+-----------------+---------------------------+---------------------------+

checking the logs of last updated timestamp in /var/log/syslog. I have
found below error.

May  5 21:49:29 orchestration magnum-conductor[10827]:
/usr/lib/python3/dist-packages/magnum/drivers/common/driver.py:38:
PkgResourcesDeprecationWarning: Parameters to load are deprecated.  Call
.resolve and .require separately.
May  5 21:49:29 orchestration magnum-conductor[10827]:   yield entry_point,
entry_point.load(require=False)
May  5 21:49:29 orchestration magnum-conductor[10827]:
/usr/lib/python3/dist-packages/kubernetes/client/apis/__init__.py:10:
DeprecationWarning: The package kubernetes.client.apis is renamed and
deprecated, use kubernetes.client.api instead (please note that the
trailing s was removed).
May  5 21:49:29 orchestration magnum-conductor[10827]:   warnings.warn(
May  5 21:49:29 orchestration magnum-conductor[10827]:
/usr/lib/python3/dist-packages/magnum/drivers/common/driver.py:38:
PkgResourcesDeprecationWarning: Parameters to load are deprecated.  Call
.resolve and .require separately.
May  5 21:49:29 orchestration magnum-conductor[10827]:   yield entry_point,
entry_point.load(require=False)
May  5 21:49:29 orchestration magnum-conductor[10827]: Traceback (most
recent call last):
May  5 21:49:29 orchestration magnum-conductor[10827]:   File
"/usr/lib/python3/dist-packages/eventlet/hubs/hub.py", line 476, in
fire_timers
May  5 21:49:29 orchestration magnum-conductor[10827]:     timer()
May  5 21:49:29 orchestration magnum-conductor[10827]:   File
"/usr/lib/python3/dist-packages/eventlet/hubs/timer.py", line 59, in
__call__
May  5 21:49:29 orchestration magnum-conductor[10827]:     cb(*args, **kw)
May  5 21:49:29 orchestration magnum-conductor[10827]:   File
"/usr/lib/python3/dist-packages/eventlet/semaphore.py", line 152, in
_do_acquire
May  5 21:49:29 orchestration magnum-conductor[10827]:     waiter.switch()
May  5 21:49:29 orchestration magnum-conductor[10827]: greenlet.error:
cannot switch to a different thread

There is no logs in magnum-conductor.log after the last updated timestamp
of conductor service. The service looks running if I see in ps -ef | grep
magnum-conductor.

- Ammad
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