Config ルールのカスタム通知

重大な非準拠の Config ルールが発生し、InfoSec チームとリーダーシップチームに直接エスカレーションされた認識を高める必要がある場合があります。このようなシナリオでは、AMS はコンプライアンス違反のイベント駆動型カスタム通知を設定することをお勧めします。

例：

ConfigRuleName: required-tags
      Description: >-
        A Config rule that checks whether EC2 instances have the mandated tags.
      Scope:
        ComplianceResourceTypes:
          - 'AWS::EC2::Instance'
      InputParameters:
        tag1Key: COST_CENTER
        tag2Key: APP_ID
      Source:
        Owner: AWS
SourceIdentifier: REQUIRED_TAGS
  NotificationEventRule:
    Type: 'AWS::Events::Rule'
    Properties:
      Name: CWEventForrequired-tags
      Description: >-
        SNS Notification for Non-Compliant Events of Config Rule:
        required-tags
      State: ENABLED
      EventPattern:
        detail-type:
          - Config Rules Compliance Change
        source:
          - aws.config
        detail:
          newEvaluationResult:
            complianceType:
              - NON_COMPLIANT
          configRuleARN:
            - 'Fn::GetAtt':
                - RequiredEC2Tags
                - Arn
      Targets:
        - Id: RemediationNotification
          Arn:
            Ref: SnsTopic
          InputTransformer:
            InputTemplate: >-
              "EC2 Instance <Instance_ID> is non-compliant. Please add required tags: COST_CENTER, APP_ID, Name, and Backup."
            InputPathsMap:
              instance_id: $.detail.resourceId
  SnsTopic:
    Type: 'AWS::SNS::Topic'
    Properties:
      Subscription:
        - Endpoint: Cloud_Ops_Leaders@customer.com
          Protocol: email
      TopicName: noncompliant-instance-notification
  SnsTopicPolicy:
    Type: 'AWS::SNS::TopicPolicy'
    Properties:
      PolicyDocument:
        Statement:
          - Sid: __default_statement_ID
            Effect: Allow
            Principal:
              AWS: '*'
            Action:
              - 'SNS:GetTopicAttributes'
              - 'SNS:SetTopicAttributes'
              - 'SNS:AddPermission'
              - 'SNS:RemovePermission'
              - 'SNS:DeleteTopic'
              - 'SNS:Subscribe'
              - 'SNS:ListSubscriptionsByTopic'
              - 'SNS:Publish'
              - 'SNS:Receive'
            Resource:
              Ref: SnsTopic
            Condition:
              StringEquals:
                'AWS:SourceOwner':
                  Ref: 'AWS::AccountId'
          - Sid: TrustCWEToPublishEventsToMyTopic
            Effect: Allow
            Principal:
              Service: events.amazonaws.com
            Action: 'sns:Publish'
            Resource:
              Ref: SnsTopic
      Topics:
        - Ref: SnsTopic