Création d'alarmes Amazon CloudWatch pour contrôler les métriques AWS Trusted Advisor

Le message électronique suivant indique qu'une alarme a détecté une modification dans la vérification IAM Access Key Rotation (Rotation des clés d'accès IAM).

You are receiving this email because your Amazon CloudWatch Alarm "IAMAcessKeyRotationCheckAlarm" in the US East (N. Virginia) region has entered the ALARM state, 
because "Threshold Crossed: 1 out of the last 1 datapoints [9.0 (26/03/21 22:44:00)] was greater than or equal to the threshold (1.0) (minimum 1 datapoint for OK -> ALARM transition)." at "Friday 26 March, 2021 22:49:42 UTC".

View this alarm in the AWS Management Console:
https://us-east-1.console.aws.amazon.com/cloudwatch/home?region=us-east-1#s=Alarms&alarm=IAMAcessKeyRotationCheckAlarm

Alarm Details:
- Name:                       IAMAcessKeyRotationCheckAlarm
- Description:                This alarm starts when one or more AWS access keys in my AWS account have not been rotated in the last 90 days.
- State Change:               INSUFFICIENT_DATA -> ALARM
- Reason for State Change:    Threshold Crossed: 1 out of the last 1 datapoints [9.0 (26/03/21 22:44:00)] was greater than or equal to the threshold (1.0) (minimum 1 datapoint for OK -> ALARM transition).
- Timestamp:                  Friday 26 March, 2021 22:49:42 UTC
- AWS Account:                123456789012
- Alarm Arn:                  arn:aws:cloudwatch:us-east-1:123456789012:alarm:IAMAcessKeyRotationCheckAlarm

Threshold:
- The alarm is in the ALARM state when the metric is GreaterThanOrEqualToThreshold 1.0 for 300 seconds. 

Monitored Metric:
- MetricNamespace:                     AWS/TrustedAdvisor
- MetricName:                          RedResources
- Dimensions:                          [CheckName = IAM Access Key Rotation]
- Period:                              300 seconds
- Statistic:                           Average
- Unit:                                not specified
- TreatMissingData:                    missing


State Change Actions:
- OK: 
- ALARM: [arn:aws:sns:us-east-1:123456789012:Default_CloudWatch_Alarms_Topic]
- INSUFFICIENT_DATA: 

L'exemple suivant spécifie l'espace de noms AWS/TrustedAdvisor pour afficher toutes les métriques pour Trusted Advisor.

aws cloudwatch list-metrics --namespace AWS/TrustedAdvisor

Le résultat peut être similaire à ce qui suit.

{
    "Metrics": [
        {
            "Namespace": "AWS/TrustedAdvisor", 
            "Dimensions": [
                {
                    "Name": "ServiceName", 
                    "Value": "EBS"
                }, 
                {
                    "Name": "ServiceLimit", 
                    "Value": "Magnetic (standard) volume storage (TiB)"
                }, 
                {
                    "Name": "Region", 
                    "Value": "ap-northeast-2"
                }
            ], 
            "MetricName": "ServiceLimitUsage"
        }, 
        {
            "Namespace": "AWS/TrustedAdvisor", 
            "Dimensions": [
                {
                    "Name": "CheckName", 
                    "Value": "Overutilized Amazon EBS Magnetic Volumes"
                }
            ], 
            "MetricName": "YellowResources"
        }, 
        {
            "Namespace": "AWS/TrustedAdvisor", 
            "Dimensions": [
                {
                    "Name": "ServiceName", 
                    "Value": "EBS"
                }, 
                {
                    "Name": "ServiceLimit", 
                    "Value": "Provisioned IOPS"
                }, 
                {
                    "Name": "Region", 
                    "Value": "eu-west-1"
                }
            ], 
            "MetricName": "ServiceLimitUsage"
        }, 
        {
            "Namespace": "AWS/TrustedAdvisor", 
            "Dimensions": [
                {
                    "Name": "ServiceName", 
                    "Value": "EBS"
                }, 
                {
                    "Name": "ServiceLimit", 
                    "Value": "Provisioned IOPS"
                }, 
                {
                    "Name": "Region", 
                    "Value": "ap-south-1"
                }
            ], 
            "MetricName": "ServiceLimitUsage"
        },
    ...
  ]
}

L'exemple suivant spécifie l'espace de nom AWS/TrustedAdvisor et la dimension Region afin d'afficher les métriques disponibles pour la région AWS spécifiée.

aws cloudwatch list-metrics --namespace AWS/TrustedAdvisor --dimensions Name=Region,Value=us-east-1

Le résultat peut être similaire à ce qui suit.

{
    "Metrics": [
        {
            "Namespace": "AWS/TrustedAdvisor",
            "Dimensions": [
                {
                    "Name": "ServiceName",
                    "Value": "SES"
                },
                {
                    "Name": "ServiceLimit",
                    "Value": "Daily sending quota"
                },
                {
                    "Name": "Region",
                    "Value": "us-east-1"
                }
            ],
            "MetricName": "ServiceLimitUsage"
        },
        {
            "Namespace": "AWS/TrustedAdvisor",
            "Dimensions": [
                {
                    "Name": "ServiceName",
                    "Value": "AutoScaling"
                },
                {
                    "Name": "ServiceLimit",
                    "Value": "Launch configurations"
                },
                {
                    "Name": "Region",
                    "Value": "us-east-1"
                }
            ],
            "MetricName": "ServiceLimitUsage"
        },
        {
            "Namespace": "AWS/TrustedAdvisor",
            "Dimensions": [
                {
                    "Name": "ServiceName",
                    "Value": "CloudFormation"
                },
                {
                    "Name": "ServiceLimit",
                    "Value": "Stacks"
                },
                {
                    "Name": "Region",
                    "Value": "us-east-1"
                }
            ],
            "MetricName": "ServiceLimitUsage"
        },
    ...
  ]
}

L'exemple suivant spécifie l'espace de nom AWS/TrustedAdvisor et un nom de métrique RedResources pour afficher les résultats uniquement pour la métrique spécifiée.

aws cloudwatch list-metrics --namespace AWS/TrustedAdvisor --metric-name RedResources

Le résultat peut être similaire à ce qui suit.

{
    "Metrics": [
        {
            "Namespace": "AWS/TrustedAdvisor",
            "Dimensions": [
                {
                    "Name": "CheckName",
                    "Value": "Amazon RDS Security Group Access Risk"
                }
            ],
            "MetricName": "RedResources"
        },
        {
            "Namespace": "AWS/TrustedAdvisor",
            "Dimensions": [
                {
                    "Name": "CheckName",
                    "Value": "Exposed Access Keys"
                }
            ],
            "MetricName": "RedResources"
        },
        {
            "Namespace": "AWS/TrustedAdvisor",
            "Dimensions": [
                {
                    "Name": "CheckName",
                    "Value": "Large Number of Rules in an EC2 Security Group"
                }
            ],
            "MetricName": "RedResources"
        },
        {
            "Namespace": "AWS/TrustedAdvisor",
            "Dimensions": [
                {
                    "Name": "CheckName",
                    "Value": "Auto Scaling Group Health Check"
                }
            ],
            "MetricName": "RedResources"
        },
    ...
  ]
}