[Bug 1946793] Please test proposed package

[Corey Bryant]

Hello Tristan, or anyone else affected,

Accepted aodh into wallaby-proposed. The package will build now and be
available in the Ubuntu Cloud Archive in a few hours, and then in the
-proposed repository.

Please help us by testing this new package. To enable the -proposed
repository:

  sudo add-apt-repository cloud-archive:wallaby-proposed
  sudo apt-get update

Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-wallaby-needed to verification-wallaby-done. If it
does not fix the bug for you, please add a comment stating that, and
change the tag to verification-wallaby-failed. In either case, details
of your testing will help us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in
advance!

** Changed in: cloud-archive/wallaby
       Status: Triaged => Fix Committed

** Tags added: verification-wallaby-needed

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https://bugs.launchpad.net/bugs/1946793

Title:
  aodh uses deprecated gnocchi api to aggregate metrics and doesn't work
  properly

Status in Aodh:
  Fix Released
Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive wallaby series:
  Fix Committed
Status in Ubuntu Cloud Archive xena series:
  Fix Committed
Status in Ubuntu Cloud Archive yoga series:
  Fix Released
Status in aodh package in Ubuntu:
  Fix Released

Bug description:
  On gnocchi API docs, there are 2 API methods to aggregate metrics

  1. /v1/aggregation/metric?

  See: https://gnocchi.osci.io/rest.html#aggregation-across-metrics-
  deprecated

  This one is deprecated

  2. /v1/aggregates?

  See: https://gnocchi.osci.io/rest.html#dynamic-aggregates

  aodh uses the 1st one to aggregate metrics, for example:

  ```
          if isinstance(start, datetime.datetime):
              start = start.isoformat()
          if isinstance(stop, datetime.datetime):
              stop = stop.isoformat()

          params = dict(start=start, stop=stop, aggregation=aggregation,
                        reaggregation=reaggregation, granularity=granularity,
                        needed_overlap=needed_overlap, groupby=groupby,
                        refresh=refresh, resample=resample, fill=fill)
          if query is None:
              for metric in metrics:
                  self._ensure_metric_is_uuid(metric)
              params['metric'] = metrics
              measures = self._get("v1/aggregation/metric",
                                   params=params).json()
  ```

  aodh doesn't work properly in our production environment after
  upgraded to Ussuri.

  When there is only 1 instance, aodh works properly and alarms can be
  triggered when the load on the instance is higher than the threshold.

  However, after the stack is scaled up, and the second instance is
  created. The average cpu usage got from gnocchi by aodh evaluator is
  not correct. The metric measures are negative sometimes.

  I manually pulled metrics with gnocchi command

  The aggregation of metrics is correct with command

  ```
  openstack metric aggregates
  ```

  It uses new API in the backend

  The aggregation of metrics is not correct with command

  ```
  openstack metric measures aggregation
  ```

  It uses the deprecated API which aodh is using.

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