alarm-evaluator severity attribute null value causes error in >= juno

[Edward Hope-Morley]

If I create a threshold alarm in Icehouse without providing a value for --severity everything works fine until I upgrade to any newer release (i.e. Juno or above) at which point the alarm-evaluator throws the following error:

2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service Traceback (most recent call last):
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service File "/usr/lib/python2.7/dist-packages/ceilometer/alarm/service.py", line 93, in _evaluate_assigned_alarms
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service alarms = self._assigned_alarms()
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service File "/usr/lib/python2.7/dist-packages/ceilometer/alarm/service.py", line 151, in _assigned_alarms
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service 'value': True}])
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service File "/usr/lib/python2.7/dist-packages/ceilometerclient/v2/alarms.py", line 77, in list
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service return self._list(options.build_url(self._path(), q))
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service File "/usr/lib/python2.7/dist-packages/ceilometerclient/common/base.py", line 68, in _list
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service resp = self.api.get(url)
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service File "/usr/lib/python2.7/dist-packages/ceilometerclient/openstack/common/apiclient/client.py", line 355, in get
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service return self.client_request("GET", url, **kwargs)
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service File "/usr/lib/python2.7/dist-packages/ceilometerclient/openstack/common/apiclient/client.py", line 345, in client_request
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service self, method, url, **kwargs)
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service File "/usr/lib/python2.7/dist-packages/ceilometerclient/openstack/common/apiclient/client.py", line 261, in client_request
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service method, self.concat_url(endpoint, url), **kwargs)
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service File "/usr/lib/python2.7/dist-packages/ceilometerclient/openstack/common/apiclient/client.py", line 201, in request
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service raise exceptions.from_response(resp, method, url)
2016-01-29 12:33:27.966 10419 TRACE ceilometer.alarm.service BadRequest: Invalid input for field/attribute severity. Value: 'None'. Value should be one of: moderate, critical, low (HTTP 400) (Request-ID: req-deab771d-fede-4cdc-962d-d7043b046022)

Presumably we could easily assume a default of low severity if a value of None is discovered thus allowing upgrades to continure working.

[Edward Hope-Morley (hopem)]

I've added both ceilometer and aodh since the alarm subsystem has moved to its own project for Mitaka but we'd like to see this fix backported to older versions of Openstack.

[luwei (luwei)]

I create alarms via aodh API instead of ceilometer API from Liberty, and I did NOT meet this bug. If I didn't give a specific value of severity, the default is "low". See in aodh/api/controllers/v2/alarms.py.

[ZhiQiang Fan (aji-zqfan)]

I think juno already reach its end of life, are we going to support it still?

[gordon chung (chungg)]

does not exist in ceilometer

[gordon chung (chungg)]

this is referencing old relesaes, last comments seem to point to non-issue. feel free to repoen