support for Aodh and Gnocchi alarms

[ioggstream]

reproduce

1. deploy on rhosp10 with autoscaling: true
2. issue openstack alarm list

I expect

Alarm status to be in [ "ok", "alarm" ]

instead

Alarm status is "insufficient data"

my resolution

• replace metadata on ServerGroup with the following.

          metadata: {"metering.server_group": {get_param: "OS::stack_id"}}

• create Gnocchi + Aodh alarms like this

  cpu_alarm_high:
    type: OS::Aodh::GnocchiAggregationByResourcesAlarm
    properties:
      aggregation_method: mean
      metric: cpu_util
      comparison_operator: gt
      threshold: 50
      granularity: 600
      evaluation_periods: 1
      resource_type: instance
      enabled: {get_param: autoscaling}
      alarm_actions:
        - {get_attr: [scale_up_policy, alarm_url]}
      query:
        str_replace:
          template: '{"=": {"server_group": "stack_id"}}'
          params:
            stack_id: {get_param: "OS::stack_id"}

Feedback welcome!

Peace, R:

[lborensky]

Hi, For me, it's not good. No autoscalabity and I have always Alarm status is "insufficient data". Trace of aodh-evaluator.log. Always 0 statistics returned.

2017-07-04 19:06:18.921 16763 DEBUG aodh.evaluator [-] evaluating alarm d00d63bf-5a17-4eb0-b291-470138a9fb85 _evaluate_alarm /opt/stack/aodh/aodh/evaluator/init.py:257 2017-07-04 19:06:18.921 16763 DEBUG aodh.evaluator.threshold [-] query stats from 2017-07-04 19:04:18.921680 to 2017-07-04 19:06:18.921680 _bound_duration /opt/stack/aodh/aodh/evaluator/threshold.py:90 2017-07-04 19:06:18.949 16763 DEBUG aodh.evaluator.gnocchi [-] sanitize stats [] _sanitize /opt/stack/aodh/aodh/evaluator/gnocchi.py:48 2017-07-04 19:06:18.949 16763 DEBUG aodh.evaluator.gnocchi [-] pruned statistics to 0 _sanitize /opt/stack/aodh/aodh/evaluator/gnocchi.py:52

[ioggstream]

There's an issue on RHOSP10 alarms.

Essentially they don't work out out of the box. You have to fix openstack before:

• set default collection interval to 300 seconds
• verify that every metric has 5 minute granularity

See

• https://review.openstack.org/#/c/465499/
• https://access.redhat.com/solutions/2953041

[ioggstream]

@markllama ok, if it's the same as the proposed one you can close this ticket ;) @lborensky see related tickets for an official release

Related tickets:

• Bug 1471234 - Unprivileged user can't access to its Gnocchi resources created by Ceilometer https://bugzilla.redhat.com/show_bug.cgi?id=1471234
• https://review.openstack.org/#/c/482947/

[ioggstream]

@lborensky fyi https://review.openstack.org/#/c/482947/ there will be an official release