The first time the problem appeared, it wouldn’t allow listing the leases. So I went to check the logs and this log showed up. I restarted the service, and less than a week later the same thing happened again.Does anyone have any idea why this error keeps happening, and what the possible consequences would be of increasing the maximum number of connections?

LOG:

ERROR oslo.service.loopingcall sqlalchemy.exc.TimeoutError: QueuePool limit of size 2 overflow 50 reached, connection timed out, timeout 30.00 (Background on this error at: https://sqlalche.me/e/14/3o7r)
2026-01-26 15:11:45.671 7 ERROR oslo.service.loopingcall
2026-01-26 15:11:45.672 7 WARNING oslo.service.loopingcall [None req-3c69a13f-1bf2-4ace-9b7e-81249a6db22b - - - - - -] Function 'blazar.manager.service.ManagerService._process_events' run outlasted interval by 20.00 sec
2026-01-26 15:11:45.673 7 DEBUG blazar.manager.service [None req-3c69a13f-1bf2-4ace-9b7e-81249a6db22b - - - - - -] Trying to get events from DB. _process_events /var/lib/kolla/venv/lib/python3.10/site-packages/blazar/manager/service.py:233
2026-01-26 15:12:15.675 7 ERROR oslo.service.loopingcall [None req-3c69a13f-1bf2-4ace-9b7e-81249a6db22b - - - - - -] Fixed interval looping call 'blazar.manager.service.ManagerService._process_events' failed: sqlalchemy.exc.TimeoutError: QueuePool limit of size 2 overflow 50 reached, connection timed out, timeout 30.00 (Background on this error at: https://sqlalche.me/e/14/3o7r)
2026-01-26 15:12:15.675 7 ERROR oslo.service.loopingcall Traceback (most recent call last):
2026-01-26 15:12:15.675 7 ERROR oslo.service.loopingcall   File "/var/lib/kolla/venv/lib/python3.10/site-packages/oslo_service/loopingcall.py", line 67, in func
2026-01-26 15:12:15.675 7 ERROR oslo.service.loopingcall     return f(*args, **kwargs)
2026-01-26 15:12:15.675 7 ERROR oslo.service.loopingcall   File "/var/lib/kolla/venv/lib/python3.10/site-packages/blazar/manager/service.py", line 234, in _process_events
2026-01-26 15:12:15.675 7 ERROR oslo.service.loopingcall     events = db_api.event_get_all_sorted_by_filters(
2026-01-26 15:12:15.675 7 ERROR oslo.service.loopingcall   File "/var/lib/kolla/venv/lib/python3.10/site-packages/blazar/db/api.py", line 102, in decorator
2026-01-26 15:12:15.675 7 ERROR oslo.service.loopingcall     res = func(*args, **kwargs)
2026-01-26 15:12:15.675 7 ERROR oslo.service.loopingcall   File "/var/lib/kolla/venv/lib/python3.10/site-packages/blazar/db/api.py", line 227, in event_get_all_sorted_by_filters
2026-01-26 15:12:15.675 7 ERROR oslo.service.loopingcall     return IMPL.event_get_all_sorted_by_filters(sort_key, sort_dir,
2026-01-26 15:12:15.675 7 ERROR oslo.service.loopingcall   File "/var/lib/kolla/venv/lib/python3.10/site-packages/blazar/db/sqlalchemy/api.py", line 355, in event_get_all_sorted_by_filters