5.2. 创建警报

流程

1. 创建警报并使用查询来隔离实例的特定 ID (94619081-abf5-4f1f-81c7-9cedaa872403)以进行监控：

   # openstack alarm create --type gnocchi_aggregation_by_resources_threshold --name cpu_usage_high --metric cpu_util --threshold 80 --aggregation-method sum --resource-type instance --query '{"=": {"id": "94619081-abf5-4f1f-81c7-9cedaa872403"}}' --alarm-action 'log://'
   +---------------------------+-------------------------------------------------------+
   | Field                     | Value                                                 |
   +---------------------------+-------------------------------------------------------+
   | aggregation_method        | sum                                                   |
   | alarm_actions             | [u'log://']                                           |
   | alarm_id                  | b794adc7-ed4f-4edb-ace4-88cbe4674a94                  |
   | comparison_operator       | eq                                                    |
   | description               | gnocchi_aggregation_by_resources_threshold alarm rule |
   | enabled                   | True                                                  |
   | evaluation_periods        | 1                                                     |
   | granularity               | 60                                                    |
   | insufficient_data_actions | []                                                    |
   | metric                    | cpu_util                                              |
   | name                      | cpu_usage_high                                        |
   | ok_actions                | []                                                    |
   | project_id                | 13c52c41e0e543d9841a3e761f981c20                      |
   | query                     | {"=": {"id": "94619081-abf5-4f1f-81c7-9cedaa872403"}} |
   | repeat_actions            | False                                                 |
   | resource_type             | instance                                              |
   | severity                  | low                                                   |
   | state                     | insufficient data                                     |
   | state_timestamp           | 2016-12-09T05:18:53.326000                            |
   | threshold                 | 80.0                                                  |
   | time_constraints          | []                                                    |
   | timestamp                 | 2016-12-09T05:18:53.326000                            |
   | type                      | gnocchi_aggregation_by_resources_threshold            |
   | user_id                   | 32d3f2c9a234423cb52fb69d3741dbbc                      |
   +---------------------------+-------------------------------------------------------+

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2. 若要编辑现有阈值警报，可使用 aodh alarm update 命令。例如，要将警报阈值增加到 75%，请使用以下命令：

   # openstack alarm update --name cpu_usage_high --threshold 75

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