错误代码:Amazonsns中的授权

Question

我试图创建一个SNS主题并从lambda发布消息。但是，我在尝试执行此操作时会遇到授权错误。

Service: AmazonSNS; Status Code: 403; Error Code: AuthorizationError

完整异常

com.amazonaws.services.sns.model.AuthorizationErrorException: User: arn:aws:sts::166916908689:assumed-role/AWSLambdaVPCAccessExecutionRole/lambda-event-common-test is not authorized to perform: SNS:Publish on resource: arn:aws:sns:eu-west-1:166916908689:events (Service: AmazonSNS; Status Code: 403; Error Code: AuthorizationError; Request ID: 9266e536-baa4-55d1-b277-b766f5536b70)

我的SAM模板看起来像

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Resources:
  EventListenFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: event.lambda.EventHandler::handleRequest
      Role: !Sub arn:aws:iam::${AWS::AccountId}:role/AWSLambdaVPCAccessExecutionRole
      FunctionName: lambda-event-$ENVNAME
      Runtime: java8
      VpcConfig:
        SecurityGroupIds:
          - !ImportValue LambdaVPCSecurityGroup
        SubnetIds:
          - !ImportValue VsolPublicSubnetAz1
          - !ImportValue VsolPublicSubnetAz2
      Environment:
        Variables:
          SNS_TOPIC_ARN: !Ref Topic
      Events:
        GetResource:
          Type: Api
          Properties:
            Path: /event/{Id}
            Method: post
      Policies:
        Statement:
          - Effect: Allow
            Action: sns:Publish
            Resource: !Ref Topic
  Topic:
      Type: "AWS::SNS::Topic"
      Properties:
        DisplayName: "events"
        TopicName: "events"  

发送SNS通知

private AmazonSNSClient snsClient =(AmazonSNSClient)AmazonSNSClient.builder().build();
 snsClient.publish(new PublishRequest(System.getenv(“SNS_TOPIC_ARN
”),”Test”));

有可能允许任何用户使用控制台发布SNS主题。我正在寻找一种使用SAM模板来完成的方法。

谢谢

Answer 1

您可以从此列表中看到

http://docs.aws.amazon.com/iam/latest/userguide/listrongns.html

SNS IAM许可还有更多的选项，而不是" SNS：发布"

您不显示您的lambda代码，但我想您需要" SNS：肌肉"

如果那不起作用，则允许" sns：*"，然后查看在CloudTrail中所谓的内容，然后将权限减少到所需的最低限度

更新：我没有使用SAM模板格式，因此我检查了文档。没有一个示例来宣布您似乎正在执行的新政策，但有用于使用现有的IAM策略的示例。

所以你说

  Policies:
    Statement:
      - Effect: Allow
        Action: sns:Publish
        Resource: !Ref Topic

尝试

 Policies: AmazonSNSFullAccess