# 配置警报以创建调查 在账户中设置调查组后，可以配置现有的 CloudWatch 警报，使其在进入 ALARM 状态时自动创建调查。这样就无需手动启动调查，并确保对操作问题做出一致的响应。您可以使用 Amazon 管理控制台、Amazon CLI、Amazon CloudFormation 或 Amazon SDK 来配置警报。 ------ #### [ Console ] 1. 通过 [https://console.aws.amazon.com/cloudwatch/](https://console.amazonaws.cn/cloudwatch/) 打开 CloudWatch 控制台。 1. 在导航窗格中，选择**警报**，然后选择现有警报。 1. 选择 **Actions**（操作）和 **Edit**（编辑）。 1. 在**警报操作**部分中，选择**添加警报操作**。 1. 在**配置操作**、**调查操作**部分下，选择调查组 ARN。 1. （可选）添加重复数据删除字符串，对相关警报进行分组。 1. 选择**更新警报**。 ------ #### [ CLI ] 此命令要求您为 `alarm-actions` 参数指定 ARN。有关如何创建 ARN 的信息，请参阅 [ARN 格式和参数](Investigations-configure-alarms.md#Investigations-arn-format)。 **使用 InvegationGroup 操作配置 CloudWatch 警报（Amazon CLI）** 1. 安装并配置 Amazon CLI（如果尚未执行该操作）。有关更多信息，请参阅[安装或更新 Amazon CLI 的最新版本](https://docs.amazonaws.cn/cli/latest/userguide/getting-started-install.html)。 1. 运行以下命令以收集要配置的告警的信息。 ``` aws cloudwatch describe-alarms --alarm-names "alarm name" ``` 1. 运行以下命令以更新告警。将每个*示例资源占位符*替换为您自己的信息。 ``` aws cloudwatch put-metric-alarm --alarm-name name \ --alarm-description "description" \ --metric-name name --namespace namespace \ --statistic statistic --period value --threshold value \ --comparison-operator value \ --dimensions "dimensions" --evaluation-periods value \ --alarm-actions "arn:aws:aiops:region:{account-id}:investigation-group/{investigationGroupIdentifier}#DEDUPE_STRING={my-dedupe-string}" ``` 以下为示例。 ``` //Without deduplication string aws cloudwatch put-metric-alarm --alarm-name cpu-mon \ --alarm-description "Alarm when CPU exceeds 70 percent" \ --metric-name CPUUtilization --namespace AWS/EC2 \ --statistic Average --period 300 --threshold 70 \ --comparison-operator GreaterThanThreshold \ --dimensions "Name=InstanceId,Value=i-12345678" --evaluation-periods 2 \ --alarm-actions arn:aws:aiops:us-east-1:123456789012:investigation-group/sMwwg1IogXdvL7UZ \ --unit Percent //With deduplication string aws cloudwatch put-metric-alarm --alarm-name cpu-mon \ --alarm-description "Alarm when CPU exceeds 70 percent" \ --metric-name CPUUtilization --namespace AWS/EC2 \ --statistic Average --period 300 --threshold 70 \ --comparison-operator GreaterThanThreshold \ --dimensions "Name=InstanceId,Value=i-12345678" --evaluation-periods 2 \ --alarm-actions arn:aws:aiops:us-east-1:123456789012:investigation-group/sMwwg1IogXdvL7UZ#DEDUPE_STRING=performance \ --unit Percent ``` ------ #### [ CloudFormation ] 本节包括多个 Amazon CloudFormation 模板，可用于配置 CloudWatch 警报以自动创建或更新调查。每个模板均要求您为 `AlarmActions` 参数指定 ARN。有关如何创建 ARN 的信息，请参阅 [ARN 格式和参数](Investigations-configure-alarms.md#Investigations-arn-format)。 ``` //Without deduplication string Resources: MyAlarm: Type: AWS::CloudWatch::Alarm Properties: AlarmActions: - !Sub "arn:aws:aiops:${AWS::Region}:${AWS::AccountId}:investigation-group/{investigationGroupIdentifier}" //With deduplication string Resources: MyAlarm: Type: AWS::CloudWatch::Alarm Properties: AlarmActions: - !Sub "arn:aws:aiops:${AWS::Region}:${AWS::AccountId}:investigation-group/{investigationGroupIdentifier}#DEDUPE_STRING={my-dedupe-string}" ``` ------ #### [ SDK ] 本节包括 Java 代码片段，可用于配置 CloudWatch 警报以自动创建或更新调查。每个代码段均要求您为 `investigationGroupArn` 参数指定 ARN。有关如何创建 ARN 的信息，请参阅 [ARN 格式和参数](Investigations-configure-alarms.md#Investigations-arn-format)。 ``` import com.amazonaws.services.cloudwatch.AmazonCloudWatch; import com.amazonaws.services.cloudwatch.AmazonCloudWatchClientBuilder; import com.amazonaws.services.cloudwatch.model.ComparisonOperator; import com.amazonaws.services.cloudwatch.model.Dimension; import com.amazonaws.services.cloudwatch.model.PutMetricAlarmRequest; import com.amazonaws.services.cloudwatch.model.PutMetricAlarmResult; import com.amazonaws.services.cloudwatch.model.StandardUnit; import com.amazonaws.services.cloudwatch.model.Statistic; //Without deduplication string private void putMetricAlarmWithCloudWatchInvestigationAction() { final AmazonCloudWatch cloudWatchClient = AmazonCloudWatchClientBuilder.defaultClient(); Dimension dimension = new Dimension() .withName("InstanceId") .withValue("i-12345678"); String investigationGroupArn = "arn:aws:aiops:us-east-1:123456789012:investigation-group/sMwwg1IogXdvL7UZ"; PutMetricAlarmRequest request = new PutMetricAlarmRequest() .withAlarmName("cpu-mon") .withComparisonOperator( ComparisonOperator.GreaterThanThreshold) .withEvaluationPeriods(2) .withMetricName("CPUUtilization") .withNamespace("AWS/EC2") .withPeriod(300) .withStatistic(Statistic.Average) .withThreshold(70.0) .withActionsEnabled(true) .withAlarmDescription("Alarm when CPU exceeds 70 percent") .withUnit(StandardUnit.Percent) .withDimensions(dimension) .withAlarmActions(investigationGroupArn); PutMetricAlarmResult response = cloudWatchClient.putMetricAlarm(request); } //With deduplication string private void putMetricAlarmWithCloudWatchInvestigationActionWithDedupeString() { final AmazonCloudWatch cloudWatchClient = AmazonCloudWatchClientBuilder.defaultClient(); Dimension dimension = new Dimension() .withName("InstanceId") .withValue("i-12345678"); String investigationGroupArn = "arn:aws:aiops:us-east-1:123456789012:investigation-group/sMwwg1IogXdvL7UZ#DEDUPE_STRING=performance"; PutMetricAlarmRequest request = new PutMetricAlarmRequest() .withAlarmName("cpu-mon") .withComparisonOperator( ComparisonOperator.GreaterThanThreshold) .withEvaluationPeriods(2) .withMetricName("CPUUtilization") .withNamespace("AWS/EC2") .withPeriod(300) .withStatistic(Statistic.Average) .withThreshold(70.0) .withActionsEnabled(true) .withAlarmDescription("Alarm when CPU exceeds 70 percent") .withUnit(StandardUnit.Percent) .withDimensions(dimension) .withAlarmActions(investigationGroupArn); PutMetricAlarmResult response = cloudWatchClient.putMetricAlarm(request); } ``` ------