Question

我有一个包含FIFO队列及其相关的死信队列的cloudformation堆栈。以前这不是FIFO队列，并且部署良好，首先创建了死信队列依赖关系，然后才是“源队列”。将其切换到FIFO后，它将不再起作用。我收到此错误：

"Template error: SQSQueue https://sqs.us-east-1.amazonaws.com/1234/dev-assignments-dlq doesn't exist",

因此，似乎不再首先创建死信队列。

 AWSTemplateFormatVersion: "2010-09-09"
    Resources:
      SourceQueue:
        Type: AWS::SQS::Queue
        Properties:
          FifoQueue: true
          QueueName: 'dev-push-notifications.fifo'
          RedrivePolicy:
            deadLetterTargetArn:
              Fn::GetAtt:
                - 'DeadLetterQueue'
                - 'Arn'
            maxReceiveCount: 5
          VisibilityTimeout: 30
      DeadLetterQueue:
        Type: AWS::SQS::Queue
        Properties:
          QueueName: 'dev-push-notifications-dlq'

Answer 1

这很奇怪，因为Cloudformation应该由于GetAtt而检测到依赖性。您可以尝试使用DependsOn属性明确声明它：

AWSTemplateFormatVersion: "2010-09-09"
  Resources:
    SourceQueue:
      Type: AWS::SQS::Queue
      DependsOn: DeadLetterQueue
      Properties:
        # ...

Answer 2

结果证明，死信队列必须与源队列类型相同。

将cloudformation堆栈更改为此可行：

AWSTemplateFormatVersion: "2010-09-09"
Resources:
  SourceQueue:
    Type: AWS::SQS::Queue
    Properties:
      FifoQueue: true
      QueueName: 'dev-push-notifications.fifo'
      RedrivePolicy:
        deadLetterTargetArn:
          Fn::GetAtt:
            - 'DeadLetterQueue'
            - 'Arn'
        maxReceiveCount: 5
      VisibilityTimeout: 30
  DeadLetterQueue:
    Type: AWS::SQS::Queue
    Properties:
      FifoQueue: true
      QueueName: 'dev-push-notifications-dlq.fifo'

无法在同一cloudformation堆栈中使用死信队列创建FIFO队列

2 个答案: