I have just started getting this in heat engine logs, not sure on the cause.
2014-10-09 00:10:24.534 INFO heat.engine.stack [-] Stack DELETE COMPLETE (one): Stack DELETE completed successfully
2014-10-09 00:10:24.556 DEBUG heat.engine.scheduler [-] Task update_task from Stack "one" [9a0da6eb-d437-4977-be45-601997190247] complete from (pid=15777) step /opt/stack/heat/heat/engine/scheduler.py:216
2014-10-09 00:10:24.562 DEBUG heat.engine.stack_lock [-] Engine 62bff557-7ea5-4dc8-848f-7561b696209a released lock on stack 9a0da6eb-d437-4977-be45-601997190247 from (pid=15777) release /opt/stack/heat/heat/engine/stack_lock.py:122
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 455, in fire_timers
timer()
File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/timer.py", line 58, in __call__
cb(*args, **kw)
File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 219, in main
self._resolve_links()
File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 230, in _resolve_links
f(self, *ca, **ckw)
TypeError: remove_event() takes exactly 3 arguments (4 given)
seems to be introduced by this patch: https:/ /github. com/openstack/ heat/commit/ 6f13c2d0a4ff200 4654a690c1e84a0 c9d40ed577