红帽全球峰会3.10.7. 示例：监控实例的磁盘活动
以下示例演示了如何使用 Aodh 警报监控特定项目中包含的所有实例的累积磁盘活动。
1.检查现有的项目，然后选择您需要监控的项目的适当 UUID。本例使用 admin 项目：
$ openstack project list
+----------------------------------+----------+
| ID | Name |
+----------------------------------+----------+
| 745d33000ac74d30a77539f8920555e7 | admin |
| 983739bb834a42ddb48124a38def8538 | services |
| be9e767afd4c4b7ead1417c6dfedde2b | demo |
+----------------------------------+----------+
2.使用项目的 UUID 创建警报，以分析 admin 项目中实例生成的所有读取请求的 sum（） （查询可以通过 --query 参数进一步限制）。
# aodh alarm create --type gnocchi_aggregation_by_resources_threshold --name iops-monitor-read-requests --metric disk.read.requests.rate --threshold 42000 --aggregation-method sum --resource-type instance --query '{"=": {"project_id": "745d33000ac74d30a77539f8920555e7"}}'
+---------------------------+-----------------------------------------------------------+
| Field | Value |
+---------------------------+-----------------------------------------------------------+
| aggregation_method | sum |
| alarm_actions | [] |
| alarm_id | 192aba27-d823-4ede-a404-7f6b3cc12469 |
| comparison_operator | eq |
| description | gnocchi_aggregation_by_resources_threshold alarm rule |
| enabled | True |
| evaluation_periods | 1 |
| granularity | 60 |
| insufficient_data_actions | [] |
| metric | disk.read.requests.rate |
| name | iops-monitor-read-requests |
| ok_actions | [] |
| project_id | 745d33000ac74d30a77539f8920555e7 |
| query | {"=": {"project_id": "745d33000ac74d30a77539f8920555e7"}} |
| repeat_actions | False |
| resource_type | instance |
| severity | low |
| state | insufficient data |
| state_timestamp | 2016-11-08T23:41:22.919000 |
| threshold | 42000.0 |
| time_constraints | [] |
| timestamp | 2016-11-08T23:41:22.919000 |
| type | gnocchi_aggregation_by_resources_threshold |
| user_id | 8c4aea738d774967b4ef388eb41fef5e |
+---------------------------+-----------------------------------------------------------+
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