本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

使用 Amazon EC2 自動擴展群組建立叢集基礎設施

本節說明如何建立 Amazon EC2 Auto Scaling 叢集。

使用 AWS CloudFormation YAML用於建立 Amazon EC2 Auto Scaling (Auto Scaling) 群組的範本、具有兩個子網路的 Amazon 虛擬私有雲端 (AmazonVPC)、一個執行個體設定檔和執行個體存取角色。若要在子網路中使用「自動調整」(Auto Scaling) 啟動執行個體，

您應該檢閱並更新執行個體類型清單，以符合您的彩現需求。

如需 CloudFormation YAML範本中所使用之資源和參數的完整說明，請參閱《截止日期雲端資源類型參考》AWS CloudFormation 使用者指南。

使用截止日期雲端擴展建議功能自動擴展您的 Amazon EC2 叢集

截止日期雲端利用 Amazon EC2 Auto Scaling (Auto Scaling) 群組自動擴展 Amazon EC2 客戶管理的叢集 (CMF)。您必須設定叢集模式，並在帳戶中部署所需的基礎結構，才能讓叢集 auto 擴充。您部署的基礎架構將適用於所有艦隊，因此您只需設置一次即可。

基本工作流程是：您將叢集模式設定為 auto 調整規模，然後在建議的叢集大小變更時 (其中一個 EventBridge 事件包含叢集 ID、建議的叢集大小和其他中繼資料)，Parate Cloud 就會傳送該叢集的事件。您將有一個 EventBridge 規則來篩選相關事件，並讓 Lambda 使用它們。Lambda 將與 Amazon 自 EC2 Auto Scaling 集成AutoScalingGroup以自動擴展 Amazon EC2 機隊。

將車隊模式設定為 EVENT_BASED_AUTO_SCALING

將您的叢集模式設定為EVENT_BASED_AUTO_SCALING。您可以使用控制台來執行此操作，或使用 AWS CLI 直接呼叫CreateFleet或UpdateFleetAPI。模式設定完成後，只要建議的叢集大小變更，Deepdate Cloud 就會開始傳送 EventBridge事件。

以下是上述CLI指令中configuration.json使用的範例 (--configuration file://configuration.json)。

設定叢集模式之後，Depution Cloud 會開始發出該叢集的叢集大小建議事件。

{
    "customerManaged": {
        "mode": "EVENT_BASED_AUTO_SCALING",       
        "workerCapabilities": {
            "vCpuCount": {
                "min": 1,
                "max": 4
            },
            "memoryMiB": {
                "min": 1024,
                "max": 4096
            },
            "osFamily": "linux",
            "cpuArchitectureType": "x86_64",
        }
    }
}

使用部署 Auto Scaling 堆疊 AWS CloudFormation template

您可以設定 EventBridge 規則來篩選事件、使用事件和控制 Auto Scaling 的 Lambda，以及用來儲存未處理事件的SQS佇列。使用以下內容 AWS CloudFormation 模板部署在堆棧中的所有內容。成功部署資源後，您可以提交工作，叢集會自動擴充。

Resources:
  AutoScalingLambda:
    Type: 'AWS::Lambda::Function'
    Properties:
      Code:
        ZipFile: |-
          """
          This lambda is configured to handle "Fleet Size Recommendation Change"
          messages. It will handle all such events, and requires
          that the ASG is named based on the fleet id. It will scale up/down the fleet
          based on the recommended fleet size in the message.
          
          Example EventBridge message:
          {
              "version": "0",
              "id": "6a7e8feb-b491-4cf7-a9f1-bf3703467718",
              "detail-type": "Fleet Size Recommendation Change",
              "source": "aws.deadline",
              "account": "111122223333",
              "time": "2017-12-22T18:43:48Z",
              "region": "us-west-1",
              "resources": [],
              "detail": {
                  "farmId": "farm-12345678900000000000000000000000",
                  "fleetId": "fleet-12345678900000000000000000000000",
                  "oldFleetSize": 1,
                  "newFleetSize": 5,
              }
          }
          """
          
          import json
          import boto3
          import logging

          logger = logging.getLogger()
          logger.setLevel(logging.INFO)

          auto_scaling_client = boto3.client("autoscaling")

          def lambda_handler(event, context):
              logger.info(event)
              event_detail = event["detail"]
              fleet_id = event_detail["fleetId"]
              desired_capacity = event_detail["newFleetSize"]

              asg_name = f"deadline-ASG-autoscalable-{fleet_id}"
              auto_scaling_client.set_desired_capacity(
                  AutoScalingGroupName=asg_name,
                  DesiredCapacity=desired_capacity,
                  HonorCooldown=False,
              )

              return {
                  'statusCode': 200,
                  'body': json.dumps(f'Successfully set desired_capacity for {asg_name} to {desired_capacity}')
              }
      Handler: index.lambda_handler
      Role: !GetAtt 
        - AutoScalingLambdaServiceRole
        - Arn
      Runtime: python3.11
    DependsOn:
      - AutoScalingLambdaServiceRoleDefaultPolicy
      - AutoScalingLambdaServiceRole
  AutoScalingEventRule:
    Type: 'AWS::Events::Rule'
    Properties:
      EventPattern:
        source:
          - aws.deadline
        detail-type:
          - Fleet Size Recommendation Change
      State: ENABLED
      Targets:
        - Arn: !GetAtt 
            - AutoScalingLambda
            - Arn
          DeadLetterConfig:
            Arn: !GetAtt 
              - UnprocessedAutoScalingEventQueue
              - Arn
          Id: Target0
          RetryPolicy:
            MaximumRetryAttempts: 15
  AutoScalingEventRuleTargetPermission:
    Type: 'AWS::Lambda::Permission'
    Properties:
      Action: 'lambda:InvokeFunction'
      FunctionName: !GetAtt 
        - AutoScalingLambda
        - Arn
      Principal: events.amazonaws.com
      SourceArn: !GetAtt 
        - AutoScalingEventRule
        - Arn
  AutoScalingLambdaServiceRole:
    Type: 'AWS::IAM::Role'
    Properties:
      AssumeRolePolicyDocument:
        Statement:
          - Action: 'sts:AssumeRole'
            Effect: Allow
            Principal:
              Service: lambda.amazonaws.com
        Version: 2012-10-17
      ManagedPolicyArns:
        - !Join 
          - ''
          - - 'arn:'
            - !Ref 'AWS::Partition'
            - ':iam::aws:policy/service-role/AWSLambdaBasicExecutionRole'
  AutoScalingLambdaServiceRoleDefaultPolicy:
    Type: 'AWS::IAM::Policy'
    Properties:
      PolicyDocument:
        Statement:
          - Action: 'autoscaling:SetDesiredCapacity'
            Effect: Allow
            Resource: '*'
        Version: 2012-10-17
      PolicyName: AutoScalingLambdaServiceRoleDefaultPolicy
      Roles:
        - !Ref AutoScalingLambdaServiceRole
  UnprocessedAutoScalingEventQueue:
    Type: 'AWS::SQS::Queue'
    Properties:
      QueueName: deadline-unprocessed-autoscaling-events
    UpdateReplacePolicy: Delete
    DeletionPolicy: Delete
  UnprocessedAutoScalingEventQueuePolicy:
    Type: 'AWS::SQS::QueuePolicy'
    Properties:
      PolicyDocument:
        Statement:
          - Action: 'sqs:SendMessage'
            Condition:
              ArnEquals:
                'aws:SourceArn': !GetAtt 
                  - AutoScalingEventRule
                  - Arn
            Effect: Allow
            Principal:
              Service: events.amazonaws.com
            Resource: !GetAtt 
              - UnprocessedAutoScalingEventQueue
              - Arn
        Version: 2012-10-17
      Queues:
        - !Ref UnprocessedAutoScalingEventQueue