使用AWS CloudFormation模板创建栈时遇[/Resources]空值错误求助

错误信息翻译 #

当前遇到的错误信息翻译为：[/Resources] 模板中不允许使用'null'值

问题根源 #

你的CloudFormation模板存在全角空格格式问题：YAML对缩进要求严格，必须使用英文半角空格，而你模板中Resources:下的CodeForCCLEBSAPI:前面用了全角空格，这会被模板解析器识别为无效字符，最终触发"null值不允许"的报错。

修正后的模板 #

将所有全角空格替换为英文半角空格即可，修正后的完整模板如下：

AWSTemplateFormatVersion: 2010-09-09
Description: A CCL EBS template
Resources:
  CodeForCCLEBSAPI:
    Type: AWS::IAM::Role
    Properties:
      RoleName: 'ccl-ebs-role-1'
      AssumeRolePolicyDocument:
        Statement:
        - Action: ['sts:AssumeRole']
          Effect: Allow
          Principal:
            Service: [codebuild.amazonaws.com]
        Version: '2012-10-17'
      Path: /
      Policies:
        - PolicyName: CodeForCCLEBSAPI
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              - Action:
                  - elasticbeanstalk:CreateApplication
                  - elasticbeanstalk:CreateEnvironment
                  - elasticbeanstalk:DeleteApplication
                  - elasticbeanstalk:RebuildEnvironment
                  - elasticbeanstalk:SwapEnvironmentCNAMEs
                  - elasticbeanstalk:TerminateEnvironment
                Effect: Allow
                Resource: "*"
              - Action:
                  - elasticbeanstalk:*
                  - ec2:*
                  - elasticloadbalancing:*
                  - autoscaling:*
                  - cloudwatch:*
                  - s3:*
                  - sns:*
                  - rds:*
                  - cloudformation:*
                Effect: Allow
                Resource: "*"

内容的提问来源于stack exchange，提问作者Bandita Pradhan