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Eventi di allarme e EventBridge
CloudWatch invia eventi ad Amazon EventBridge ogni volta che un CloudWatch allarme viene creato, aggiornato, eliminato o cambia lo stato dell'allarme. Puoi utilizzare EventBridge questi eventi per scrivere regole che intraprendano azioni, come avvisarti quando un allarme cambia stato. Per ulteriori informazioni, consulta What is Amazon EventBridge?
CloudWatch garantisce la trasmissione degli eventi di modifica dello stato di allarme a EventBridge.
Eventi di modifica dello stato degli allarmi
Questa sezione mostra esempi di eventi inviati EventBridge quando cambia lo stato di un allarme. Seleziona una scheda per visualizzare i diversi tipi di eventi di modifica dello stato di allarme.
- Single Metric Alarm
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Eventi generati quando un singolo allarme per la metrica cambia stato. Questi eventi includono i campi
stateepreviousStatecon i risultati della valutazione dell'allarme.{ "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" } } } - Metric Math Alarm
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Eventi generati quando un allarme basato sulla matematica delle metriche cambia stato. Questi eventi includono i dettagli delle espressioni matematiche presenti nel campo
configuration.{ "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" } } } - Outlier Detection Alarm
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Eventi generati quando un allarme di rilevamento delle anomalie cambia stato. Questi eventi includono i limiti di soglia superiore e inferiore nel campo
reasonData.{ "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 }] } } } - Composite Alarm
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Eventi generati quando un allarme composito cambia stato. Questi eventi includono informazioni sulla soppressione nei campi
actionsSuppressedByeactionsSuppressedReason.{ "version": "0", "id": "d3dfc86d-384d-24c8-0345-9f7986db0b80", "detail-type": "CloudWatch Alarm State Change", "source": "aws.cloudwatch", "account": "123456789012", "time": "2022-07-22T15:57:45Z", "region": "us-east-1", "resources": [ "arn:aws:cloudwatch:us-east-1:123456789012:alarm:ServiceAggregatedAlarm" ], "detail": { "alarmName": "ServiceAggregatedAlarm", "state": { "actionsSuppressedBy": "WaitPeriod", "actionsSuppressedReason": "Actions suppressed by WaitPeriod", "value": "ALARM", "reason": "arn:aws:cloudwatch:us-east-1:123456789012:alarm:SuppressionDemo.EventBridge.FirstChild transitioned to ALARM at Friday 22 July, 2022 15:57:45 UTC", "reasonData": "{\"triggeringAlarms\":[{\"arn\":\"arn:aws:cloudwatch:us-east-1:123456789012:alarm:ServerCpuTooHigh\",\"state\":{\"value\":\"ALARM\",\"timestamp\":\"2022-07-22T15:57:45.394+0000\"}}]}", "timestamp": "2022-07-22T15:57:45.394+0000" }, "previousState": { "value": "OK", "reason": "arn:aws:cloudwatch:us-east-1:123456789012:alarm:SuppressionDemo.EventBridge.Main was created and its alarm rule evaluates to OK", "reasonData": "{\"triggeringAlarms\":[{\"arn\":\"arn:aws:cloudwatch:us-east-1:123456789012:alarm:TotalNetworkTrafficTooHigh\",\"state\":{\"value\":\"OK\",\"timestamp\":\"2022-07-14T16:28:57.770+0000\"}},{\"arn\":\"arn:aws:cloudwatch:us-east-1:123456789012:alarm:ServerCpuTooHigh\",\"state\":{\"value\":\"OK\",\"timestamp\":\"2022-07-14T16:28:54.191+0000\"}}]}", "timestamp": "2022-07-22T15:56:14.552+0000" }, "configuration": { "alarmRule": "ALARM(ServerCpuTooHigh) OR ALARM(TotalNetworkTrafficTooHigh)", "actionsSuppressor": "ServiceMaintenanceAlarm", "actionsSuppressorWaitPeriod": 120, "actionsSuppressorExtensionPeriod": 180 } } }
Eventi di modifica della configurazione degli allarmi
Questa sezione mostra esempi di eventi inviati EventBridge quando la configurazione di un allarme cambia. Le modifiche alla configurazione includono la creazione, l'aggiornamento o l'eliminazione di allarmi.
- Creation Events
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Eventi generati quando vengono creati nuovi allarmi. Questi eventi includono la configurazione iniziale degli allarmi nel campo
configuration, conoperationimpostato su “crea”.Esempio di allarme composito
{ "version": "0", "id": "91535fdd-1e9c-849d-624b-9a9f2b1d09d0", "detail-type": "CloudWatch Alarm Configuration Change", "source": "aws.cloudwatch", "account": "123456789012", "time": "2022-03-03T17:06:22Z", "region": "us-east-1", "resources": [ "arn:aws:cloudwatch:us-east-1:123456789012:alarm:ServiceAggregatedAlarm" ], "detail": { "alarmName": "ServiceAggregatedAlarm", "operation": "create", "state": { "value": "INSUFFICIENT_DATA", "timestamp": "2022-03-03T17:06:22.289+0000" }, "configuration": { "alarmRule": "ALARM(ServerCpuTooHigh) OR ALARM(TotalNetworkTrafficTooHigh)", "alarmName": "ServiceAggregatedAlarm", "description": "Aggregated monitor for instance", "actionsEnabled": true, "timestamp": "2022-03-03T17:06:22.289+0000", "okActions": [], "alarmActions": [], "insufficientDataActions": [] } } }Esempio di allarme composito con soppressore
{ "version": "0", "id": "454773e1-09f7-945b-aa2c-590af1c3f8e0", "detail-type": "CloudWatch Alarm Configuration Change", "source": "aws.cloudwatch", "account": "123456789012", "time": "2022-07-14T13:59:46Z", "region": "us-east-1", "resources": [ "arn:aws:cloudwatch:us-east-1:123456789012:alarm:ServiceAggregatedAlarm" ], "detail": { "alarmName": "ServiceAggregatedAlarm", "operation": "create", "state": { "value": "INSUFFICIENT_DATA", "timestamp": "2022-07-14T13:59:46.425+0000" }, "configuration": { "alarmRule": "ALARM(ServerCpuTooHigh) OR ALARM(TotalNetworkTrafficTooHigh)", "actionsSuppressor": "ServiceMaintenanceAlarm", "actionsSuppressorWaitPeriod": 120, "actionsSuppressorExtensionPeriod": 180, "alarmName": "ServiceAggregatedAlarm", "actionsEnabled": true, "timestamp": "2022-07-14T13:59:46.425+0000", "okActions": [], "alarmActions": [], "insufficientDataActions": [] } } } - Update Events
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Eventi generati quando gli allarmi esistenti vengono modificati. Questi eventi contengono entrambi i campi
configurationepreviousConfigurationper mostrare cosa è cambiato.Esempio di allarme per la metrica
{ "version": "0", "id": "bc7d3391-47f8-ae47-f457-1b4d06118d50", "detail-type": "CloudWatch Alarm Configuration Change", "source": "aws.cloudwatch", "account": "123456789012", "time": "2022-03-03T17:06:34Z", "region": "us-east-1", "resources": [ "arn:aws:cloudwatch:us-east-1:123456789012:alarm:ServerCpuTooHigh" ], "detail": { "alarmName": "ServerCpuTooHigh", "operation": "update", "state": { "value": "INSUFFICIENT_DATA", "timestamp": "2022-03-03T17:06:13.757+0000" }, "configuration": { "evaluationPeriods": 1, "threshold": 80, "comparisonOperator": "GreaterThanThreshold", "treatMissingData": "ignore", "metrics": [ { "id": "86bfa85f-b14c-ebf7-8916-7da014ce23c0", "metricStat": { "metric": { "namespace": "AWS/EC2", "name": "CPUUtilization", "dimensions": { "InstanceId": "i-12345678901234567" } }, "period": 300, "stat": "Average" }, "returnData": true } ], "alarmName": "ServerCpuTooHigh", "description": "Goes into alarm when server CPU utilization is too high!", "actionsEnabled": true, "timestamp": "2022-03-03T17:06:34.267+0000", "okActions": [], "alarmActions": [], "insufficientDataActions": [] }, "previousConfiguration": { "evaluationPeriods": 1, "threshold": 70, "comparisonOperator": "GreaterThanThreshold", "treatMissingData": "ignore", "metrics": [ { "id": "d6bfa85f-893e-b052-a58b-4f9295c9111a", "metricStat": { "metric": { "namespace": "AWS/EC2", "name": "CPUUtilization", "dimensions": { "InstanceId": "i-12345678901234567" } }, "period": 300, "stat": "Average" }, "returnData": true } ], "alarmName": "ServerCpuTooHigh", "description": "Goes into alarm when server CPU utilization is too high!", "actionsEnabled": true, "timestamp": "2022-03-03T17:06:13.757+0000", "okActions": [], "alarmActions": [], "insufficientDataActions": [] } } }Esempio di allarme per la metrica con soppressore
{ "version": "0", "id": "4c6f4177-6bd5-c0ca-9f05-b4151c54568b", "detail-type": "CloudWatch Alarm Configuration Change", "source": "aws.cloudwatch", "account": "123456789012", "time": "2022-07-14T13:59:56Z", "region": "us-east-1", "resources": [ "arn:aws:cloudwatch:us-east-1:123456789012:alarm:ServiceAggregatedAlarm" ], "detail": { "alarmName": "ServiceAggregatedAlarm", "operation": "update", "state": { "actionsSuppressedBy": "WaitPeriod", "value": "ALARM", "timestamp": "2022-07-14T13:59:46.425+0000" }, "configuration": { "alarmRule": "ALARM(ServerCpuTooHigh) OR ALARM(TotalNetworkTrafficTooHigh)", "actionsSuppressor": "ServiceMaintenanceAlarm", "actionsSuppressorWaitPeriod": 120, "actionsSuppressorExtensionPeriod": 360, "alarmName": "ServiceAggregatedAlarm", "actionsEnabled": true, "timestamp": "2022-07-14T13:59:56.290+0000", "okActions": [], "alarmActions": [], Remove "insufficientDataActions": [] }, "previousConfiguration": { "alarmRule": "ALARM(ServerCpuTooHigh) OR ALARM(TotalNetworkTrafficTooHigh)", "actionsSuppressor": "ServiceMaintenanceAlarm", "actionsSuppressorWaitPeriod": 120, "actionsSuppressorExtensionPeriod": 180, "alarmName": "ServiceAggregatedAlarm", "actionsEnabled": true, "timestamp": "2022-07-14T13:59:46.425+0000", "okActions": [], "alarmActions": [], "insufficientDataActions": [] } } } - Deletion Events
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Eventi generati quando gli allarmi vengono eliminati. Questi eventi includono la configurazione finale dell'allarme e
operationimpostato su “elimina”.Esempio di allarme basato sulla matematica delle metriche
{ "version": "0", "id": "f171d220-9e1c-c252-5042-2677347a83ed", "detail-type": "CloudWatch Alarm Configuration Change", "source": "aws.cloudwatch", "account": "123456789012", "time": "2022-03-03T17:07:13Z", "region": "us-east-*", "resources": [ "arn:aws:cloudwatch:us-east-1:123456789012:alarm:TotalNetworkTrafficTooHigh" ], "detail": { "alarmName": "TotalNetworkTrafficTooHigh", "operation": "delete", "state": { "value": "INSUFFICIENT_DATA", "timestamp": "2022-03-03T17:06:17.672+0000" }, "configuration": { "evaluationPeriods": 1, "threshold": 10000, "comparisonOperator": "GreaterThanThreshold", "treatMissingData": "ignore", "metrics": [{ "id": "m1", "metricStat": { "metric": { "namespace": "AWS/EC2", "name": "NetworkIn", "dimensions": { "InstanceId": "i-12345678901234567" } }, "period": 300, "stat": "Maximum" }, "returnData": false }, { "id": "m2", "metricStat": { "metric": { "namespace": "AWS/EC2", "name": "NetworkOut", "dimensions": { "InstanceId": "i-12345678901234567" } }, "period": 300, "stat": "Maximum" }, "returnData": false }, { "id": "e1", "expression": "SUM(METRICS())", "label": "Total Network Traffic", "returnData": true } ], "alarmName": "TotalNetworkTrafficTooHigh", "description": "Goes into alarm if total network traffic exceeds 10Kb", "actionsEnabled": true, "timestamp": "2022-03-03T17:06:17.672+0000", "okActions": [], "alarmActions": [], "insufficientDataActions": [] } } }Esempio di allarme basato sulla matematica delle metriche con soppressore
{ "version": "0", "id": "e34592a1-46c0-b316-f614-1b17a87be9dc", "detail-type": "CloudWatch Alarm Configuration Change", "source": "aws.cloudwatch", "account": "123456789012", "time": "2022-07-14T14:00:01Z", "region": "us-east-*", "resources": [ "arn:aws:cloudwatch:us-east-1:123456789012:alarm:ServiceAggregatedAlarm" ], "detail": { "alarmName": "ServiceAggregatedAlarm", "operation": "delete", "state": { "actionsSuppressedBy": "WaitPeriod", "value": "ALARM", "timestamp": "2022-07-14T13:59:46.425+0000" }, "configuration": { "alarmRule": "ALARM(ServerCpuTooHigh) OR ALARM(TotalNetworkTrafficTooHigh)", "actionsSuppressor": "ServiceMaintenanceAlarm", "actionsSuppressorWaitPeriod": 120, "actionsSuppressorExtensionPeriod": 360, "alarmName": "ServiceAggregatedAlarm", "actionsEnabled": true, "timestamp": "2022-07-14T13:59:56.290+0000", "okActions": [], "alarmActions": [], "insufficientDataActions": [] } } }
Avvia un'indagine a partire da un allarme CloudWatch
Gestione degli allarmi