AWS IAM Cloudformation YAML 模板错误：不允许使用“空”值

Question

我正在为授予跨账户只读访问权限的 IAM 角色开发 Cloudformation 模板。它也使用托管策略进行只读访问。到目前为止，我已经解决了几个错误，但是现在当我尝试验证模板时出现“模板中不允许使用‘空’值”错误。我认为这是一个空间或语法问题，但我不能确定，因为这是我第一次从头开始创建 cloudformation 模板并使用 YAML。

AWSTemplateFormatVersion: '2010-09-09'
Description: AWS CloudFormation template IAM Role for New Relic to have read access to AWS account
Resources:
  NewRelicInfrastructure-IntegrationsRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
      Version: '2012-10-17'
      Statement:
        Effect: Allow
        Principal:
          AWS: 11111111
        Action: sts:AssumeRole
        Condition:
          StringEquals:
          sts:ExternalId: '11111'
  Path: '/'
  ManagedPolicyArns: arn:aws:iam::aws:policy/ReadOnlyAccess
  RoleName: NewRelicInfrastructure-Integrations2

Answer 1

问题在于AssumeRolePolicyDocument:. 它是必需的，但您将其留空。你也有一个缺口问题，即Path，ManagedPolicyArns与RoleName正在Resources代替Properties。

尝试：

AWSTemplateFormatVersion: '2010-09-09'
Description: AWS CloudFormation template IAM Role for New Relic to have read access to AWS account
Resources:
  NewRelicInfrastructure-IntegrationsRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          Effect: Allow
          Principal:
            AWS: 11111111
          Action: sts:AssumeRole
          Condition:
            StringEquals:
            sts:ExternalId: '11111'
      Path: '/'
      ManagedPolicyArns: arn:aws:iam::aws:policy/ReadOnlyAccess
      RoleName: NewRelicInfrastructure-Integrations2

Answer 2

缩进已修复，它在 AssumeRolePolicyDocument 中指定了某些内容，但 YAML 语法不正确，这有效：

AWSTemplateFormatVersion: '2010-09-09'
Description: AWS CloudFormation template IAM Role for New Relic to have read access to AWS account
Resources:
  NewRelicInfrastructureIntegrationsRole: 
    Type: AWS::IAM::Role
    Properties:
      Path: '/managed/'
      ManagedPolicyArns: 
        - 'arn:aws:iam::aws:policy/ReadOnlyAccess'
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
        - 
          Action: sts:AssumeRole  
          Effect: Allow
          Principal:
            AWS: 1111111111111
          Condition:
            StringEquals:
              sts:ExternalId: '11111'
      RoleName: NewRelicInfrastructureIntegrationsRole