AWS SNS 主题子：死信队列（重新驱动策略）权限被拒绝

Question

我有一个 SNS 主题和订阅（实际上超过 1 个）设置来使用 SQS DLQ。然而，每个人都告诉我，我有一个政策错误。

我的 SNS 订阅设置了 DLQ：

我的队列存在：

我在 SQS 队列上设置了以下访问策略：

{
  "Version": "2008-10-17",
  "Id": "__default_policy_ID",
  "Statement": [
    {
      "Sid": "__owner_statement",
      "Effect": "Allow",
      "Principal": {
        "AWS": "arn:aws:iam::1234:root"
      },
      "Action": "SQS:*",
      "Resource": "arn:aws:sqs:eu-west-2:1234:AggregateMonitoringDeadLetterQueue"
    },
    {
      "Effect": "Allow",
      "Principal": {
        "Service": "sns.amazonaws.com"
      },
      "Action": "SQS:SendMessage",
      "Resource": "arn:aws:sqs:eu-west-2:1234:AggregateMonitoringDeadLetterQueue",
      "Condition": {
        "ArnLike": {
          "aws:SourceArn": [
            "arn:aws:sns:eu-west-2:1234:aggregator-state",
            "arn:aws:sns:eu-west-2:1234:rank-state-publication",
            "arn:aws:sns:eu-west-2:1234:rank-state-categorisation"
          ]
        }
      }
    }
  ]
}

我还尝试在队列上采用真正通用的访问策略：

{
  "Version": "2008-10-17",
  "Id": "__default_policy_ID",
  "Statement": [
    {
      "Sid": "__owner_statement",
      "Effect": "Allow",
      "Principal": {
        "AWS": "*"
      },
      "Action": "SQS:*",
      "Resource": "arn:aws:sqs:eu-west-2:1234:AggregateMonitoringDeadLetterQueue"
    },
    {
      "Effect": "Allow",
      "Principal": {
        "Service": "sns.amazonaws.com"
      },
      "Action": "SQS:*",
      "Resource": "arn:aws:sqs:eu-west-2:1234:AggregateMonitoringDeadLetterQueue",
      "Condition": {
        "ArnLike": {
          "aws:SourceArn": "arn:aws:sns:eu-west-2:1234:*"
        }
      }
    }
  ]
}

我正在关注这个：https://docs.aws.amazon.com/sns/latest/dg/sns-configure-dead-letter-queue.html（第5步解释了设置策略）

其他参考： https: //docs.aws.amazon.com/sns/latest/dg/sns-dead-letter-queues.html

我一定做错了什么，或者错过了什么？我无法摆脱这个错误。

Answer 1

请参阅此答案，其中指出尽管有错误消息，失败的消息仍会正确发送到 DLQ。

从我这边来看，我可以确认我在 DLQ 中收到了那些失败的消息，其配置与您的类似（通过遵循同一个文档https://docs.aws.amazon.com/sns/latest/dg/sns-configure-dead -letter-queue.html）。