Question

我是AWS SAM模板的新手，并希望能够创建具有一系列策略的角色，然后为lambda函数引用该角色。但是，尝试部署时出现以下错误：

“角色”处的值“ MyRole”未能满足约束：成员必须满足正则表达式模式：arn：（aws [a-zA-Z-] *）?: iam :: \ d {12}：role / ？[a-zA-Z_0-9 + =，。@ -_ //] +

此答案提到我可以将策略直接添加到该函数中，但是我将有许多需要相同策略的函数，因此这不是一种非常干燥的方法 IAM role inside SAM template

问题是我不能在新创建的角色上使用！GetAtt吗？

这是我的template.yml的样子：

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  OMW Backend Services

Globals:
  Function:
    Timeout: 3

Resources:

  MyRole:
    Type: AWS::IAM::Role
    Properties:
      ManagedPolicyArns:
        - 'arn:aws:iam::aws:policy/service-role/AmazonRDSFullAccess'
        - 'arn:aws:iam::aws:policy/service-role/AmazonAPIGatewayPushToCloudWatchLogs'
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          -
            Effect: Allow
            Principal:
              Service:
                - 'lambda.amazonaws.com'
            Action:
              - 'sts:AssumeRole'
      Policies:       
          PolicyName: 'ParameterStoreDevParameterAccess'
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              -
                Effect: Allow
                Action:
                  - 'ssm:GetParameter*'
                Resource: !Sub 'arn:aws:ssm:${AWS::Region}:${AWS::AccountId}:parameter/dev/*'
        -
          PolicyName: 'ParameterStoreDevLambdaBasicExecution'
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              -
                Effect: Allow
                Action:
                  - 'logs:CreateLogGroup'
                  - 'logs:CreateLogStream'
                  - 'logs:PutLogEvents'
                Resource: '*'
        -
          PolicyName: 'ParameterStoreDevXRayAccess'
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              -
                Effect: Allow
                Action:
                  - 'xray:PutTraceSegments'
                  - 'xray:PutTelemetryRecords'
                Resource: '*'
  MyFunction:
    Type: AWS::Serverless::Function
      Tracing: Active
      CodeUri: functions/src/
      Handler: lookup.lambdaHandler
      Runtime: nodejs10.x
      Timeout: 10
      MemorySize: 256
      Role: !GetAtt MyRole.Arn
      Events:
        Lookup:
          Type: Api
          Properties:
            Path: /somePath/{id}
            Method: get

Answer 1

您的lambda函数定义中缺少“属性”标签，并且缺少策略列表-第一个策略。

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  OMW Backend Services

Globals:
  Function:
    Timeout: 3

Resources:

  MyRole:
    Type: AWS::IAM::Role
    Properties:
      ManagedPolicyArns:
        - 'arn:aws:iam::aws:policy/service-role/AmazonRDSFullAccess'
        - 'arn:aws:iam::aws:policy/service-role/AmazonAPIGatewayPushToCloudWatchLogs'
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          -
            Effect: Allow
            Principal:
              Service:
                - 'lambda.amazonaws.com'
            Action:
              - 'sts:AssumeRole'
      Policies:
        -
          PolicyName: 'ParameterStoreDevParameterAccess'
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              -
                Effect: Allow
                Action:
                  - 'ssm:GetParameter*'
                Resource: !Sub 'arn:aws:ssm:${AWS::Region}:${AWS::AccountId}:parameter/dev/*'
        -
          PolicyName: 'ParameterStoreDevLambdaBasicExecution'
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              -
                Effect: Allow
                Action:
                  - 'logs:CreateLogGroup'
                  - 'logs:CreateLogStream'
                  - 'logs:PutLogEvents'
                Resource: '*'
        -
          PolicyName: 'ParameterStoreDevXRayAccess'
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              -
                Effect: Allow
                Action:
                  - 'xray:PutTraceSegments'
                  - 'xray:PutTelemetryRecords'
                Resource: '*'
  MyFunction:
    Type: AWS::Serverless::Function
    Properties:
      Tracing: Active
      CodeUri: functions/src/
      Handler: lookup.lambdaHandler
      Runtime: nodejs10.x
      Timeout: 10
      MemorySize: 256
      Role: !GetAtt MyRole.Arn
      Events:
        Lookup:
          Type: Api
          Properties:
            Path: /somePath/{id}
            Method: get

如何引用SAM模板中定义的角色？

1 个答案: