Comment 3 for bug 1847091

It's strange, from the log :2019-10-08 06:22:34.176 1900 DEBUG watcher.applier.workflow_engine.base [req-875a653c-3136-40b1-881a-d3e5fbf005a3 - - - - -] POST_EXECUTE ---> action_type:change_nova_service_state uuid:460b2ae8-9e00-4dd3-833c-5e56b49a5415==1.0 post_execute /usr/local/lib/python2.7/dist-packages/watcher/applier/workflow_engine/base.py:245
line 245 in base.py should be a log.debug line, but in rocky version it's LOG.exception(e) https://github.com/openstack/watcher/blob/stable/rocky/watcher/applier/workflow_engine/base.py#L245

I wish you check the files workflow_engine/base.py and default.py