Amazon Web Services 文档中描述的 Amazon Web Services 服务或功能可能因区域而异。要查看适用于中国区域的差异，请参阅 中国的 Amazon Web Services 服务入门 (PDF)。

与 CMK 跨账户集成考虑的注意事项

当尝试从 DynamoDB 集成到 Amazon Redshift 时，初始操作将从 Amazon Redshift 启动。如果没有适当的权限，此操作可能会导致静默失败。以下各节详细介绍此跨账户集成所需的权限。

所需的 Amazon KMS 角色和权限

替换示例中的以下占位符：

DynamoDB 账户中的 KMS 密钥策略

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "Enable IAM User Permissions",
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam::DYNAMODB_ACCOUNT_ID:root"
            },
            "Action": "kms:*",
            "Resource": "*"
        },
        {
            "Sid": "Allow Redshift to use the key",
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam::REDSHIFT_ACCOUNT_ID:role/REDSHIFT_ROLE_NAME"
            },
            "Action": [
                "kms:Decrypt",
                "kms:DescribeKey",
                "kms:GenerateDataKey",
                "kms:GenerateDataKeyWithoutPlaintext"
            ],
            "Resource": "*"
        }
    ]
}

Amazon Redshift 角色的 IAM 策略（在 Amazon Redshift 账户中）

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "AllowDynamoDBAccess",
            "Effect": "Allow",
            "Action": [
                "dynamodb:DescribeTable",
                "dynamodb:ParitalBatchGetItem",
                "dynamodb:Scan",
                "dynamodb:Query",
                "dynamodb:BatchGetItem",
                "dynamodb:GetItem",
                "dynamodb:GetRecords",
                "dynamodb:GetShardIterator",
                "dynamodb:DescribeStream",
                "dynamodb:ListStreams"
            ],
            "Resource": [
                "arn:aws:dynamodb:REGION:DYNAMODB_ACCOUNT_ID:table/TABLE_NAME",
                "arn:aws:dynamodb:REGION:DYNAMODB_ACCOUNT_ID:table/TABLE_NAME/stream/*"
            ]
        },
        {
            "Sid": "AllowKMSAccess",
            "Effect": "Allow",
            "Action": [
                "kms:Decrypt",
                "kms:DescribeKey",
                "kms:GenerateDataKey",
                "kms:GenerateDataKeyWithoutPlaintext"
            ],
            "Resource": "arn:aws:kms:REGION:DYNAMODB_ACCOUNT_ID:key/KMS_KEY_ID"
        }
    ]
}

Amazon Redshift 角色的信任关系

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {
                "Service": "redshift.amazonaws.com"
            },
            "Action": "sts:AssumeRole"
        }
    ]
}

DynamoDB 表策略（如果使用基于资源的策略）

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "AllowRedshiftAccess",
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam::REDSHIFT_ACCOUNT_ID:role/REDSHIFT_ROLE_NAME"
            },
            "Action": [
                "dynamodb:DescribeTable",
                "dynamodb:ParitalBatchGetItem",
                "dynamodb:Scan",
                "dynamodb:Query",
                "dynamodb:BatchGetItem",
                "dynamodb:GetItem",
                "dynamodb:GetRecords",
                "dynamodb:GetShardIterator",
                "dynamodb:DescribeStream",
                "dynamodb:ListStreams"
            ],
            "Resource": [
                "arn:aws:dynamodb:REGION:DYNAMODB_ACCOUNT_ID:table/TABLE_NAME",
                "arn:aws:dynamodb:REGION:DYNAMODB_ACCOUNT_ID:table/TABLE_NAME/stream/*"
            ]
        }
    ]
}

重要注意事项