Trechos de modelo do Amazon CloudWatch

Alarme de faturamento

No exemplo a seguir, o Amazon CloudWatch envia uma notificação por e-mail quando as despesas de sua conta da AWS excedem o limite de alarme. Para receber notificações de uso, basta permitir os alertas de pagamento.

JSON

"SpendingAlarm": {
  "Type": "AWS::CloudWatch::Alarm",
  "Properties": {
    "AlarmDescription": { "Fn::Join": ["", [
      "Alarm if AWS spending is over $",
      { "Ref": "AlarmThreshold" }
    ]]},
    "Namespace": "AWS/Billing",
    "MetricName": "EstimatedCharges",
    "Dimensions": [{
      "Name": "Currency",
      "Value" : "USD"
    }],
    "Statistic": "Maximum",
    "Period": "21600",
    "EvaluationPeriods": "1",
    "Threshold": { "Ref": "AlarmThreshold" },
    "ComparisonOperator": "GreaterThanThreshold",
    "AlarmActions": [{
      "Ref": "BillingAlarmNotification"
    }],
    "InsufficientDataActions": [{
      "Ref": "BillingAlarmNotification"
    }]
  }
}

YAML

SpendingAlarm:
  Type: AWS::CloudWatch::Alarm
  Properties:
    AlarmDescription: 
      'Fn::Join':
        - ''
        - - Alarm if AWS spending is over $
          - Ref: AlarmThreshold
    Namespace: AWS/Billing
    MetricName: EstimatedCharges
    Dimensions:
    - Name: Currency
      Value: USD
    Statistic: Maximum
    Period: '21600'
    EvaluationPeriods: '1'
    Threshold:
      Ref: "AlarmThreshold"
    ComparisonOperator: GreaterThanThreshold
    AlarmActions:
    - Ref: "BillingAlarmNotification"
    InsufficientDataActions:
    - Ref: "BillingAlarmNotification"

Alarme de utilização da CPU

O trecho de exemplo a seguir cria um alarme que envia uma notificação quando a utilização média da CPU de uma instância Amazon EC2 é excedida em 90% por mais de 60 segundos em três períodos de avaliação.

JSON

"CPUAlarm" : {
  "Type" : "AWS::CloudWatch::Alarm",
  "Properties" : {
    "AlarmDescription" : "CPU alarm for my instance",
    "AlarmActions" : [ { "Ref" : "logical name of an AWS::SNS::Topic resource" } ],
    "MetricName" : "CPUUtilization",
    "Namespace" : "AWS/EC2",
    "Statistic" : "Average",
    "Period" : "60",
    "EvaluationPeriods" : "3",
    "Threshold" : "90",
    "ComparisonOperator" : "GreaterThanThreshold",
    "Dimensions" : [ {
      "Name" : "InstanceId",
      "Value" : { "Ref" : "logical name of an AWS::EC2::Instance resource" }
    } ]
  }
}

YAML

CPUAlarm:
  Type: AWS::CloudWatch::Alarm
  Properties:
    AlarmDescription: CPU alarm for my instance
    AlarmActions:
    - Ref: "logical name of an AWS::SNS::Topic resource"
    MetricName: CPUUtilization
    Namespace: AWS/EC2
    Statistic: Average
    Period: '60'
    EvaluationPeriods: '3'
    Threshold: '90'
    ComparisonOperator: GreaterThanThreshold
    Dimensions:
    - Name: InstanceId
      Value:
        Ref: "logical name of an AWS::EC2::Instance resource"

Recuperar uma instância Amazon Elastic Compute Cloud

O alarme do CloudWatch a seguir recupera uma instância do EC2 quando ocorrem falhas de verificação de status por 15 minutos consecutivos. Para obter mais informações sobre as ações de alarme, consulte Criar alarmes que param, encerram, reinicializam ou recuperam uma instância, no Guia do usuário do Amazon CloudWatch.

JSON

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Parameters" : {
    "RecoveryInstance" : {
      "Description" : "The EC2 instance ID to associate this alarm with.",
      "Type" : "AWS::EC2::Instance::Id"
    }
  },
  "Resources": {
    "RecoveryTestAlarm": {
      "Type": "AWS::CloudWatch::Alarm",
      "Properties": {
        "AlarmDescription": "Trigger a recovery when instance status check fails for 15 consecutive minutes.",
        "Namespace": "AWS/EC2" ,
        "MetricName": "StatusCheckFailed_System",
        "Statistic": "Minimum",
        "Period": "60",
        "EvaluationPeriods": "15",
        "ComparisonOperator": "GreaterThanThreshold",
        "Threshold": "0",
        "AlarmActions": [ {"Fn::Join" : ["", ["arn:aws:automate:", { "Ref" : "AWS::Region" }, ":ec2:recover" ]]} ],
        "Dimensions": [{"Name": "InstanceId","Value": {"Ref": "RecoveryInstance"}}]
      }
    }
  }
}

YAML

AWSTemplateFormatVersion: '2010-09-09'
Parameters:
  RecoveryInstance:
    Description: The EC2 instance ID to associate this alarm with.
    Type: AWS::EC2::Instance::Id
Resources:
  RecoveryTestAlarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmDescription: Trigger a recovery when instance status check fails for 15
        consecutive minutes.
      Namespace: AWS/EC2
      MetricName: StatusCheckFailed_System
      Statistic: Minimum
      Period: '60'
      EvaluationPeriods: '15'
      ComparisonOperator: GreaterThanThreshold
      Threshold: '0'
      AlarmActions: [ !Sub "arn:aws:automate:${AWS::Region}:ec2:recover" ]
      Dimensions:
      - Name: InstanceId
        Value:
          Ref: RecoveryInstance

Criar um painel básico

O exemplo a seguir cria um painel simples do CloudWatch com um widget de métrica que exibe a utilização da CPU e um widget de texto que exibe uma mensagem.

JSON

{
    "BasicDashboard": {
        "Type": "AWS::CloudWatch::Dashboard",
        "Properties": {
            "DashboardName": "Dashboard1",
            "DashboardBody": "{\"widgets\":[{\"type\":\"metric\",\"x\":0,\"y\":0,\"width\":12,\"height\":6,\"properties\":{\"metrics\":[[\"AWS/EC2\",\"CPUUtilization\",\"InstanceId\",\"i-012345\"]],\"period\":300,\"stat\":\"Average\",\"region\":\"us-east-1\",\"title\":\"EC2 Instance CPU\"}},{\"type\":\"text\",\"x\":0,\"y\":7,\"width\":3,\"height\":3,\"properties\":{\"markdown\":\"Hello world\"}}]}"
        }
    }
}
    

YAML

BasicDashboard:
  Type: AWS::CloudWatch::Dashboard
  Properties:
    DashboardName: Dashboard1
    DashboardBody: '{"widgets":[{"type":"metric","x":0,"y":0,"width":12,"height":6,"properties":{"metrics":[["AWS/EC2","CPUUtilization","InstanceId","i-012345"]],"period":300,"stat":"Average","region":"us-east-1","title":"EC2 Instance CPU"}},{"type":"text","x":0,"y":7,"width":3,"height":3,"properties":{"markdown":"Hello world"}}]}'

Criar um painel com widgets exibidos lado a lado

O exemplo a seguir cria um painel com dois widgets de métrica exibidos lado a lado.

JSON

{
    "DashboardSideBySide": {
        "Type": "AWS::CloudWatch::Dashboard",
        "Properties": {
            "DashboardName": "Dashboard1",
            "DashboardBody": "{\"widgets\":[{\"type\":\"metric\",\"x\":0,\"y\":0,\"width\":12,\"height\":6,\"properties\":{\"metrics\":[[\"AWS/EC2\",\"CPUUtilization\",\"InstanceId\",\"i-012345\"]],\"period\":300,\"stat\":\"Average\",\"region\":\"us-east-1\",\"title\":\"EC2 Instance CPU\"}},{\"type\":\"metric\",\"x\":12,\"y\":0,\"width\":12,\"height\":6,\"properties\":{\"metrics\":[[\"AWS/S3\",\"BucketSizeBytes\",\"BucketName\",\"MyBucketName\"]],\"period\":86400,\"stat\":\"Maximum\",\"region\":\"us-east-1\",\"title\":\"MyBucketName bytes\"}}]}"
        }
    }
}

YAML

DashboardSideBySide:
  Type: AWS::CloudWatch::Dashboard
  Properties:
    DashboardName: Dashboard1
    DashboardBody: '{"widgets":[{"type":"metric","x":0,"y":0,"width":12,"height":6,"properties":{"metrics":[["AWS/EC2","CPUUtilization","InstanceId","i-012345"]],"period":300,"stat":"Average","region":"us-east-1","title":"EC2 Instance CPU"}},{"type":"metric","x":12,"y":0,"width":12,"height":6,"properties":{"metrics":[["AWS/S3","BucketSizeBytes","BucketName","MyBucketName"]],"period":86400,"stat":"Maximum","region":"us-east-1","title":"MyBucketName bytes"}}]}'