如何在信任关系中导入值

Question

我从另一个堆栈导出了一个值并尝试以 cloudformation 角色导入“AssumeRolePolicyDocument”，尝试了很多方法但出现以下错误

“语法错误 position (1,195)（服务：AmazonIdentityManagement；状态代码：400；错误代码：MalformedPolicyDocument；请求 ID：b1b4b5ef-88ef-444b-8aa7-0548ce0002a6；代理：空）”

  EksAutoscalerRole: 
    Type: AWS::IAM::Role
    Properties:
      RoleName: Eks-Autoscaler-Role
      Path: "/"
      AssumeRolePolicyDocument: 
        Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Principal:
            Federated: 
              'Fn::Sub':
              - 'arn:aws:iam::1122334455:oidc-provider/oidc.eks.us-east-1.amazonaws.com/id/${oidc}'
              - oidc: 
                  "Fn::ImportValue": EksOidc
          Action: 'sts:AssumeRoleWithWebIdentity'
          Condition:
            StringEquals:   
              'Fn::Sub': 
              - 'oidc.eks.us-east-1.amazonaws.com/id/${oidc}:sub: system:serviceaccount:kube-system:cluster-autoscaler'
              - oidc: 
                  "Fn::ImportValue": EksOidc
      ManagedPolicyArns:
      - !Ref EksAutoscalerPolicy

也尝试了以下方法： 插入类似于插入参数的 CloudFormation ImportValue？

更新试过下面的代码现在可以工作了。

  EksAutoscalerRole: 
    Type: AWS::IAM::Role
    Properties:
      RoleName: Eks-Autoscaler-Role
      Path: /
      AssumeRolePolicyDocument: 
        "Fn::Sub":
        - '{
            "Version": "2012-10-17",
            "Statement": [
                {
                    "Effect": "Allow",
                    "Principal": {
                        "Federated": "${EksAutoscalerProvider}"
                    },
                    "Action": "sts:AssumeRoleWithWebIdentity",
                    "Condition": {
                        "StringEquals": {
                            "oidc.eks.${AWS::Region}.amazonaws.com/id/${oidcNo}:sub": "system:serviceaccount:kube-system:cluster-autoscaler"
                        }
                    }
                }
            ]
          }'
        - oidcNo: !Select [0, !Split [".", !Select [1, !Split ["//", !GetAtt EksCluster.Endpoint]]]]
      ManagedPolicyArns:
      - !Ref EksAutoscalerPolicy

Answer 1

检查你的缩进。 根据文档，Sub function 应该像这样缩进：

Fn::Sub:
  - String
  - Var1Name: Var1Value
    Var2Name: Var2Value