기계 번역으로 제공되는 번역입니다. 제공된 번역과 원본 영어의 내용이 상충하는 경우에는 영어 버전이 우선합니다. # CloudWatch 경보 작업 ## 경보 만들기 CloudWatch 지표를 기반으로 경보를 생성하려면 경보 조건으로 채워진 [PutMetricAlarmRequest](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/services/cloudwatch/model/PutMetricAlarmRequest.html)를 사용하여 CloudWatchClient의 `putMetricAlarm` 메서드를 호출합니다. **가져오기** ``` import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.cloudwatch.CloudWatchClient; import software.amazon.awssdk.services.cloudwatch.model.Dimension; import software.amazon.awssdk.services.cloudwatch.model.PutMetricAlarmRequest; import software.amazon.awssdk.services.cloudwatch.model.ComparisonOperator; import software.amazon.awssdk.services.cloudwatch.model.Statistic; import software.amazon.awssdk.services.cloudwatch.model.StandardUnit; import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException; ``` **코드** ``` public static void putMetricAlarm(CloudWatchClient cw, String alarmName, String instanceId) { try { Dimension dimension = Dimension.builder() .name("InstanceId") .value(instanceId).build(); PutMetricAlarmRequest request = PutMetricAlarmRequest.builder() .alarmName(alarmName) .comparisonOperator( ComparisonOperator.GREATER_THAN_THRESHOLD) .evaluationPeriods(1) .metricName("CPUUtilization") .namespace("AWS/EC2") .period(60) .statistic(Statistic.AVERAGE) .threshold(70.0) .actionsEnabled(false) .alarmDescription( "Alarm when server CPU utilization exceeds 70%") .unit(StandardUnit.SECONDS) .dimensions(dimension) .build(); cw.putMetricAlarm(request); System.out.printf( "Successfully created alarm with name %s", alarmName); } catch (CloudWatchException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } ``` GitHub의 [전체 예제](https://github.com/awsdocs/aws-doc-sdk-examples/blob/f4eaf2b2971805cfb2b87a8e5ab408f83169432e/javav2/example_code/cloudwatch/src/main/java/com/example/cloudwatch/PutMetricAlarm.java)를 참조하세요. ## 경보 나열 생성한 CloudWatch 경보를 나열하려면 결과에 대한 옵션을 설정하는 데 사용할 수 있는 [DescribeAlarmsRequest](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/services/cloudwatch/model/DescribeAlarmsRequest.html)를 사용하여 CloudWatchClient의 `describeAlarms` 메서드를 호출합니다. **가져오기** ``` import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.cloudwatch.CloudWatchClient; import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException; import software.amazon.awssdk.services.cloudwatch.model.DescribeAlarmsRequest; import software.amazon.awssdk.services.cloudwatch.model.DescribeAlarmsResponse; import software.amazon.awssdk.services.cloudwatch.model.MetricAlarm; ``` **코드** ``` public static void desCWAlarms( CloudWatchClient cw) { try { boolean done = false; String newToken = null; while(!done) { DescribeAlarmsResponse response; if (newToken == null) { DescribeAlarmsRequest request = DescribeAlarmsRequest.builder().build(); response = cw.describeAlarms(request); } else { DescribeAlarmsRequest request = DescribeAlarmsRequest.builder() .nextToken(newToken) .build(); response = cw.describeAlarms(request); } for(MetricAlarm alarm : response.metricAlarms()) { System.out.printf("\n Retrieved alarm %s", alarm.alarmName()); } if(response.nextToken() == null) { done = true; } else { newToken = response.nextToken(); } } } catch (CloudWatchException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } System.out.printf("Done"); } ``` `describeAlarms`에 의해 반환되는 [DescribeAlarmsResponse](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/services/cloudwatch/model/DescribeAlarmsResponse.html)에 대해 `MetricAlarms`를 호출하여 경보 목록을 가져올 수 있습니다. 결과를 *페이징*할 수 있습니다. 다음 결과 배치를 검색하려면 응답 객체에서 `nextToken`를 호출하고 토큰 값을 사용하여 새 요청 객체를 빌드합니다. 그런 다음 새 요청을 사용해 다시 `describeAlarms` 메서드를 호출합니다. **참고** CloudWatchClient의 `describeAlarmsForMetric` 메서드를 사용하여 특정 지표의 경보를 검색할 수도 있습니다. 이 메서드의 용도는 `describeAlarms`와 비슷합니다. GitHub의 [전체 예제](https://github.com/awsdocs/aws-doc-sdk-examples/blob/f4eaf2b2971805cfb2b87a8e5ab408f83169432e/javav2/example_code/cloudwatch/src/main/java/com/example/cloudwatch/DescribeAlarms.java)를 참조하세요. ## 경보 삭제 CloudWatch 경보를 삭제하려면 삭제하려는 하나 이상의 경보 이름이 포함된 [DeleteAlarmsRequest](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/services/cloudwatch/model/DeleteAlarmsRequest.html)를 사용하여 CloudWatchClient의 `deleteAlarms` 메서드를 호출합니다. **가져오기** ``` import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.cloudwatch.CloudWatchClient; import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException; import software.amazon.awssdk.services.cloudwatch.model.DeleteAlarmsRequest; ``` **코드** ``` public static void deleteCWAlarm(CloudWatchClient cw, String alarmName) { try { DeleteAlarmsRequest request = DeleteAlarmsRequest.builder() .alarmNames(alarmName) .build(); cw.deleteAlarms(request); System.out.printf("Successfully deleted alarm %s", alarmName); } catch (CloudWatchException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } ``` GitHub의 [전체 예제](https://github.com/awsdocs/aws-doc-sdk-examples/blob/f4eaf2b2971805cfb2b87a8e5ab408f83169432e/javav2/example_code/cloudwatch/src/main/java/com/example/cloudwatch/DeleteAlarm.java)를 참조하세요. ## 추가 정보 + Amazon CloudWatch 사용 설명서의 [Amazon CloudWatch 경보 사용](https://docs.aws.amazon.com//AmazonCloudWatch/latest/monitoring/AlarmThatSendsEmail.html) + Amazon CloudWatch API 참조의 [PutMetricAlarm](https://docs.aws.amazon.com//AmazonCloudWatch/latest/APIReference/API_PutMetricAlarm.html) + Amazon CloudWatch API 참조의 [DescribeAlarms](https://docs.aws.amazon.com//AmazonCloudWatch/latest/APIReference/API_DescribeAlarms.html) + Amazon CloudWatch API 참조의 [DeleteAlarms](https://docs.aws.amazon.com//AmazonCloudWatch/latest/APIReference/API_DeleteAlarms.html)