Amazon CloudWatch
用户指南
AWS 文档中描述的 AWS 服务或功能可能因区域而异。要查看适用于中国区域的差异,请参阅中国的 AWS 服务入门

警报事件和 EventBridge

每当 CloudWatch 警报更改警报状态时,CloudWatch 都会将事件发送到 Amazon EventBridge。您可以使用 EventBridge 和这些事件来编写规则,这些规则将在警报更改状态时采取措施,例如通知您。关更多信息,请参阅什么是 Amazon EventBridge?

当前,需要使用 AWS 管理控制台 来基于 CloudWatch 中的事件创建规则。您必须对规则要监视的事件文本使用自定义事件模式选项。您还可以使用 AWS 开发工具包或 AWS API 基于 CloudWatch 中的事件创建规则。

来自 CloudWatch 的示例事件

本部分包括来自 CloudWatch 的示例事件。

单指标警报的状态更改

{ "version": "0", "id": "c4c1c1c9-6542-e61b-6ef0-8c4d36933a92", "detail-type": "CloudWatch Alarm State Change", "source": "aws.cloudwatch", "account": "123456789012", "time": "2019-10-02T17:04:40Z", "region": "us-east-1", "resources": [ "arn:aws:cloudwatch:us-east-1:123456789012:alarm:ServerCpuTooHigh" ], "detail": { "alarmName": "ServerCpuTooHigh", "configuration": { "description": "Goes into alarm when server CPU utilization is too high!", "metrics": [ { "id": "30b6c6b2-a864-43a2-4877-c09a1afc3b87", "metricStat": { "metric": { "dimensions": { "InstanceId": "i-12345678901234567" }, "name": "CPUUtilization", "namespace": "AWS/EC2" }, "period": 300, "stat": "Average" }, "returnData": true } ] }, "previousState": { "reason": "Threshold Crossed: 1 out of the last 1 datapoints [0.0666851903306472 (01/10/19 13:46:00)] was not greater than the threshold (50.0) (minimum 1 datapoint for ALARM -> OK transition).", "reasonData": "{\"version\":\"1.0\",\"queryDate\":\"2019-10-01T13:56:40.985+0000\",\"startDate\":\"2019-10-01T13:46:00.000+0000\",\"statistic\":\"Average\",\"period\":300,\"recentDatapoints\":[0.0666851903306472],\"threshold\":50.0}", "timestamp": "2019-10-01T13:56:40.987+0000", "value": "OK" }, "state": { "reason": "Threshold Crossed: 1 out of the last 1 datapoints [99.50160229693434 (02/10/19 16:59:00)] was greater than the threshold (50.0) (minimum 1 datapoint for OK -> ALARM transition).", "reasonData": "{\"version\":\"1.0\",\"queryDate\":\"2019-10-02T17:04:40.985+0000\",\"startDate\":\"2019-10-02T16:59:00.000+0000\",\"statistic\":\"Average\",\"period\":300,\"recentDatapoints\":[99.50160229693434],\"threshold\":50.0}", "timestamp": "2019-10-02T17:04:40.989+0000", "value": "ALARM" } } }

数学指标警报的状态更改

{ "version": "0", "id": "2dde0eb1-528b-d2d5-9ca6-6d590caf2329", "detail-type": "CloudWatch Alarm State Change", "source": "aws.cloudwatch", "account": "123456789012", "time": "2019-10-02T17:20:48Z", "region": "us-east-1", "resources": [ "arn:aws:cloudwatch:us-east-1:123456789012:alarm:TotalNetworkTrafficTooHigh" ], "detail": { "alarmName": "TotalNetworkTrafficTooHigh", "configuration": { "description": "Goes into alarm if total network traffic exceeds 10Kb", "metrics": [ { "expression": "SUM(METRICS())", "id": "e1", "label": "Total Network Traffic", "returnData": true }, { "id": "m1", "metricStat": { "metric": { "dimensions": { "InstanceId": "i-12345678901234567" }, "name": "NetworkIn", "namespace": "AWS/EC2" }, "period": 300, "stat": "Maximum" }, "returnData": false }, { "id": "m2", "metricStat": { "metric": { "dimensions": { "InstanceId": "i-12345678901234567" }, "name": "NetworkOut", "namespace": "AWS/EC2" }, "period": 300, "stat": "Maximum" }, "returnData": false } ] }, "previousState": { "reason": "Unchecked: Initial alarm creation", "timestamp": "2019-10-02T17:20:03.642+0000", "value": "INSUFFICIENT_DATA" }, "state": { "reason": "Threshold Crossed: 1 out of the last 1 datapoints [45628.0 (02/10/19 17:10:00)] was greater than the threshold (10000.0) (minimum 1 datapoint for OK -> ALARM transition).", "reasonData": "{\"version\":\"1.0\",\"queryDate\":\"2019-10-02T17:20:48.551+0000\",\"startDate\":\"2019-10-02T17:10:00.000+0000\",\"period\":300,\"recentDatapoints\":[45628.0],\"threshold\":10000.0}", "timestamp": "2019-10-02T17:20:48.554+0000", "value": "ALARM" } } }

异常检测警报的状态更改

{ "version": "0", "id": "daafc9f1-bddd-c6c9-83af-74971fcfc4ef", "detail-type": "CloudWatch Alarm State Change", "source": "aws.cloudwatch", "account": "123456789012", "time": "2019-10-03T16:00:04Z", "region": "us-east-1", "resources": ["arn:aws:cloudwatch:us-east-1:123456789012:alarm:EC2 CPU Utilization Anomaly"], "detail": { "alarmName": "EC2 CPU Utilization Anomaly", "state": { "value": "ALARM", "reason": "Thresholds Crossed: 1 out of the last 1 datapoints [0.0 (03/10/19 15:58:00)] was less than the lower thresholds [0.020599444741798756] or greater than the upper thresholds [0.3006915352732461] (minimum 1 datapoint for OK -> ALARM transition).", "reasonData": "{\"version\":\"1.0\",\"queryDate\":\"2019-10-03T16:00:04.650+0000\",\"startDate\":\"2019-10-03T15:58:00.000+0000\",\"period\":60,\"recentDatapoints\":[0.0],\"recentLowerThresholds\":[0.020599444741798756],\"recentUpperThresholds\":[0.3006915352732461]}", "timestamp": "2019-10-03T16:00:04.653+0000" }, "previousState": { "value": "OK", "reason": "Thresholds Crossed: 1 out of the last 1 datapoints [0.166666666664241 (03/10/19 15:57:00)] was not less than the lower thresholds [0.0206719426210418] or not greater than the upper thresholds [0.30076870222143803] (minimum 1 datapoint for ALARM -> OK transition).", "reasonData": "{\"version\":\"1.0\",\"queryDate\":\"2019-10-03T15:59:04.670+0000\",\"startDate\":\"2019-10-03T15:57:00.000+0000\",\"period\":60,\"recentDatapoints\":[0.166666666664241],\"recentLowerThresholds\":[0.0206719426210418],\"recentUpperThresholds\":[0.30076870222143803]}", "timestamp": "2019-10-03T15:59:04.672+0000" }, "configuration": { "description": "Goes into alarm if CPU Utilization is out of band", "metrics": [{ "id": "m1", "metricStat": { "metric": { "namespace": "AWS/EC2", "name": "CPUUtilization", "dimensions": { "InstanceId": "i-12345678901234567" } }, "period": 60, "stat": "Average" }, "returnData": true }, { "id": "ad1", "expression": "ANOMALY_DETECTION_BAND(m1, 0.8)", "label": "CPUUtilization (expected)", "returnData": true }] } } }