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# Amazon EMR のサービスロール (EMR ロール)
<a name="emr-iam-role"></a>

Amazon EMR ロールは、Amazon EMR がリソースをプロビジョニングし、クラスター内で実行されている Amazon EC2 インスタンスのコンテキストでは実行されないサービスレベルのタスクを実行するときに Amazon EMR に対して許可されるアクションを定義します。例えば、このサービスロールを使用してクラスターの起動時に EC2 インスタンスをプロビジョニングします。
+ デフォルトのロール名は `EMR_DefaultRole_V2` です。
+ `EMR_DefaultRole_V2` にアタッチされる、Amazon EMR 範囲のデフォルトの管理ポリシーは `AmazonEMRServicePolicy_v2` です。この v2 ポリシーは、廃止されたデフォルトの管理ポリシー `AmazonElasticMapReduceRole` を置き換えるものです。

`AmazonEMRServicePolicy_v2` は、Amazon EMR がプロビジョニングまたは使用するリソースへの、範囲が制限されたアクセス権限に依存します。このポリシーを使用する場合は、クラスターのプロビジョニング時にユーザータグ `for-use-with-amazon-emr-managed-policies = true` を渡す必要があります。Amazon EMR はこれらのタグを自動的に伝播します。さらに、Amazon EMR によって作成されていない EC2 セキュリティグループなど、特定のタイプのリソースにユーザータグを手動で追加する必要がある場合があります。「[管理ポリシーを使用するためにリソースにタグを付ける](emr-managed-iam-policies.md#manually-tagged-resources)」を参照してください。

**重要**  
Amazon EMR は、この Amazon EMR サービスロールと `AWSServiceRoleForEMRCleanup` ロールを使用して、アカウント内で使用しなくなったクラスターリソース (Amazon EC2 インスタンスなど) をクリーンアップします。ロールポリシーにはリソースを削除または終了するアクションを含める必要があります。そうでない場合、Amazon EMR はこれらのクリーンアップアクションを実行できず、クラスターに残っている未使用のリソースに対して料金が発生する可能性があります。

以下は、現在の `AmazonEMRServicePolicy_v2` ポリシーの内容を示しています。IAM コンソールで [https://console.aws.amazon.com/iam/home#policies/arn:aws:iam::aws:policy/service-role/AmazonEMRServicePolicy_v2](https://console.aws.amazon.com/iam/home#policies/arn:aws:iam::aws:policy/service-role/AmazonEMRServicePolicy_v2) 管理ポリシーの現在の内容を確認することもできます。

------
#### [ JSON ]

****  

```
{
  "Version":"2012-10-17",		 	 	 
  "Statement": [
    {
      "Sid": "CreateInTaggedNetwork",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateNetworkInterface",
        "ec2:RunInstances",
        "ec2:CreateFleet",
        "ec2:CreateLaunchTemplate",
        "ec2:CreateLaunchTemplateVersion"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:subnet/*",
        "arn:aws:ec2:*:*:security-group/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:ResourceTag/for-use-with-amazon-emr-managed-policies": "true"
        }
      }
    },
    {
      "Sid": "CreateWithEMRTaggedLaunchTemplate",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateFleet",
        "ec2:RunInstances",
        "ec2:CreateLaunchTemplateVersion"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:launch-template/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:ResourceTag/for-use-with-amazon-emr-managed-policies": "true"
        }
      }
    },
    {
      "Sid": "CreateEMRTaggedLaunchTemplate",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateLaunchTemplate"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:launch-template/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:RequestTag/for-use-with-amazon-emr-managed-policies": "true"
        }
      }
    },
    {
      "Sid": "CreateEMRTaggedInstancesAndVolumes",
      "Effect": "Allow",
      "Action": [
        "ec2:RunInstances",
        "ec2:CreateFleet"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:instance/*",
        "arn:aws:ec2:*:*:volume/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:RequestTag/for-use-with-amazon-emr-managed-policies": "true"
        }
      }
    },
    {
      "Sid": "ResourcesToLaunchEC2",
      "Effect": "Allow",
      "Action": [
        "ec2:RunInstances",
        "ec2:CreateFleet",
        "ec2:CreateLaunchTemplate",
        "ec2:CreateLaunchTemplateVersion"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:network-interface/*",
        "arn:aws:ec2:*::image/ami-*",
        "arn:aws:ec2:*:*:key-pair/*",
        "arn:aws:ec2:*:*:capacity-reservation/*",
        "arn:aws:ec2:*:*:placement-group/pg-*",
        "arn:aws:ec2:*:*:fleet/*",
        "arn:aws:ec2:*:*:dedicated-host/*",
        "arn:aws:resource-groups:*:*:group/*"
      ]
    },
    {
      "Sid": "ManageEMRTaggedResources",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateLaunchTemplateVersion",
        "ec2:DeleteLaunchTemplate",
        "ec2:DeleteNetworkInterface",
        "ec2:ModifyInstanceAttribute",
        "ec2:TerminateInstances"
      ],
      "Resource": [
        "*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:ResourceTag/for-use-with-amazon-emr-managed-policies": "true"
        }
      }
    },
    {
      "Sid": "ManageTagsOnEMRTaggedResources",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateTags",
        "ec2:DeleteTags"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:instance/*",
        "arn:aws:ec2:*:*:volume/*",
        "arn:aws:ec2:*:*:network-interface/*",
        "arn:aws:ec2:*:*:launch-template/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:ResourceTag/for-use-with-amazon-emr-managed-policies": "true"
        }
      }
    },
    {
      "Sid": "CreateNetworkInterfaceNeededForPrivateSubnet",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateNetworkInterface"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:network-interface/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:RequestTag/for-use-with-amazon-emr-managed-policies": "true"
        }
      }
    },
    {
      "Sid": "TagOnCreateTaggedEMRResources",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateTags"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:network-interface/*",
        "arn:aws:ec2:*:*:instance/*",
        "arn:aws:ec2:*:*:volume/*",
        "arn:aws:ec2:*:*:launch-template/*"
      ],
      "Condition": {
        "StringEquals": {
          "ec2:CreateAction": [
            "RunInstances",
            "CreateFleet",
            "CreateLaunchTemplate",
            "CreateNetworkInterface"
          ]
        }
      }
    },
    {
      "Sid": "TagPlacementGroups",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateTags",
        "ec2:DeleteTags"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:placement-group/pg-*"
      ]
    },
    {
      "Sid": "ListActionsForEC2Resources",
      "Effect": "Allow",
      "Action": [
        "ec2:DescribeAccountAttributes",
        "ec2:DescribeCapacityReservations",
        "ec2:DescribeDhcpOptions",
        "ec2:DescribeImages",
        "ec2:DescribeInstances",
        "ec2:DescribeInstanceTypeOfferings",
        "ec2:DescribeLaunchTemplates",
        "ec2:DescribeNetworkAcls",
        "ec2:DescribeNetworkInterfaces",
        "ec2:DescribePlacementGroups",
        "ec2:DescribeRouteTables",
        "ec2:DescribeSecurityGroups",
        "ec2:DescribeSubnets",
        "ec2:DescribeVolumes",
        "ec2:DescribeVolumeStatus",
        "ec2:DescribeVpcAttribute",
        "ec2:DescribeVpcEndpoints",
        "ec2:DescribeVpcs"
      ],
      "Resource": [
        "*"
      ]
    },
    {
      "Sid": "CreateDefaultSecurityGroupWithEMRTags",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateSecurityGroup"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:security-group/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:RequestTag/for-use-with-amazon-emr-managed-policies": "true"
        }
      }
    },
    {
      "Sid": "CreateDefaultSecurityGroupInVPCWithEMRTags",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateSecurityGroup"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:vpc/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:ResourceTag/for-use-with-amazon-emr-managed-policies": "true"
        }
      }
    },
    {
      "Sid": "TagOnCreateDefaultSecurityGroupWithEMRTags",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateTags"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:security-group/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:RequestTag/for-use-with-amazon-emr-managed-policies": "true",
          "ec2:CreateAction": "CreateSecurityGroup"
        }
      }
    },
    {
      "Sid": "ManageSecurityGroups",
      "Effect": "Allow",
      "Action": [
        "ec2:AuthorizeSecurityGroupEgress",
        "ec2:AuthorizeSecurityGroupIngress",
        "ec2:RevokeSecurityGroupEgress",
        "ec2:RevokeSecurityGroupIngress"
      ],
      "Resource": [
        "*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:ResourceTag/for-use-with-amazon-emr-managed-policies": "true"
        }
      }
    },
    {
      "Sid": "CreateEMRPlacementGroups",
      "Effect": "Allow",
      "Action": [
        "ec2:CreatePlacementGroup"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:placement-group/pg-*"
      ]
    },
    {
      "Sid": "DeletePlacementGroups",
      "Effect": "Allow",
      "Action": [
        "ec2:DeletePlacementGroup"
      ],
      "Resource": [
        "*"
      ]
    },
    {
      "Sid": "AutoScaling",
      "Effect": "Allow",
      "Action": [
        "application-autoscaling:DeleteScalingPolicy",
        "application-autoscaling:DeregisterScalableTarget",
        "application-autoscaling:DescribeScalableTargets",
        "application-autoscaling:DescribeScalingPolicies",
        "application-autoscaling:PutScalingPolicy",
        "application-autoscaling:RegisterScalableTarget"
      ],
      "Resource": [
        "*"
      ]
    },
    {
      "Sid": "ResourceGroupsForCapacityReservations",
      "Effect": "Allow",
      "Action": [
        "resource-groups:ListGroupResources"
      ],
      "Resource": [
        "*"
      ]
    },
    {
      "Sid": "AutoScalingCloudWatch",
      "Effect": "Allow",
      "Action": [
        "cloudwatch:PutMetricAlarm",
        "cloudwatch:DeleteAlarms",
        "cloudwatch:DescribeAlarms"
      ],
      "Resource": [
        "arn:aws:cloudwatch:*:*:alarm:*_EMR_Auto_Scaling"
      ]
    },
    {
      "Sid": "PassRoleForAutoScaling",
      "Effect": "Allow",
      "Action": [
        "iam:PassRole"
      ],
      "Resource": [
        "arn:aws:iam::*:role/EMR_AutoScaling_DefaultRole"
      ],
      "Condition": {
        "StringLike": {
          "iam:PassedToService": "application-autoscaling.amazonaws.com*"
        }
      }
    },
    {
      "Sid": "PassRoleForEC2",
      "Effect": "Allow",
      "Action": [
        "iam:PassRole"
      ],
      "Resource": [
        "arn:aws:iam::*:role/EMR_EC2_DefaultRole"
      ],
      "Condition": {
        "StringLike": {
          "iam:PassedToService": "ec2.amazonaws.com*"
        }
      }
    },
    {
      "Sid": "CreateAndModifyEmrServiceVPCEndpoint",
      "Effect": "Allow",
      "Action": [
        "ec2:ModifyVpcEndpoint",
        "ec2:CreateVpcEndpoint"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:vpc-endpoint/*",
        "arn:aws:ec2:*:*:subnet/*",
        "arn:aws:ec2:*:*:security-group/*",
        "arn:aws:ec2:*:*:vpc/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:ResourceTag/for-use-with-amazon-emr-managed-policies": "true"
        }
      }
    },
    {
      "Sid": "CreateEmrServiceVPCEndpoint",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateVpcEndpoint"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:vpc-endpoint/*"
      ],
      "Condition": {
        "StringEquals": {
          "aws:RequestTag/for-use-with-amazon-emr-managed-policies": "true",
          "aws:RequestTag/Name": "emr-service-vpce"
        }
      }
    },
    {
      "Sid": "TagEmrServiceVPCEndpoint",
      "Effect": "Allow",
      "Action": [
        "ec2:CreateTags"
      ],
      "Resource": [
        "arn:aws:ec2:*:*:vpc-endpoint/*"
      ],
      "Condition": {
        "StringEquals": {
          "ec2:CreateAction": "CreateVpcEndpoint",
          "aws:RequestTag/for-use-with-amazon-emr-managed-policies": "true",
          "aws:RequestTag/Name": "emr-service-vpce"
        }
      }
    }
  ]
}
```

------

サービスロールでは、次の信頼ポリシーを使用する必要があります。

**重要**  
次の信頼ポリシーには、Amazon EMR に付与するアクセス許可をアカウント内の特定のリソースに制限するためのグローバル条件キー [https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_condition-keys.html#condition-keys-sourcearn](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_condition-keys.html#condition-keys-sourcearn) および [https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_condition-keys.html#condition-keys-sourceaccount](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_condition-keys.html#condition-keys-sourceaccount) が含まれています。これらを使用することで、[「混乱した代理」問題](https://docs.aws.amazon.com/IAM/latest/UserGuide/confused-deputy.html)から保護できます。

------
#### [ JSON ]

****  

```
{
  "Version":"2012-10-17",		 	 	 
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Service": "elasticmapreduce.amazonaws.com"
      },
      "Action": "sts:AssumeRole",
      "Condition": {
        "StringEquals": {
          "aws:SourceAccount": "{{123456789012}}"
        },
        "ArnLike": {
          "aws:SourceArn": "arn:aws:elasticmapreduce:*:{{123456789012}}:*"
        }
      }
    }
  ]
}
```

------