amazon-web-services - Userdata Cloudformation 中资源的引用 ID

Question

我正在编写 YAML 格式的 cloudformation 模板。现在我不得不将 ebs 卷的 id 附加到 ec2 用户数据中。

    Type: AWS::EC2::Volume
    Properties:
      Size: 50
      AvailabilityZone: ap-southeast-1b
      Tags:
      - Key: Name
        Value: Logstash Volume
  LogStashMountPoint:
    Type: AWS::EC2::VolumeAttachment
    Properties:
      InstanceId:
        Ref: LogstashInstance
      VolumeId:
        Ref: LogstashVolume
      Device: "/dev/xvdf"        
  LogstashInstance:
    Type: AWS::EC2::Instance
    Properties:
      IamInstanceProfile:
          Ref: LogstashInstanceProfile                 
      InstanceType: t2.micro
      KeyName: chuongtest
      ImageId: ami-0cd31be676780afa7
      UserData:
        Fn::Base64:
          Fn::Sub:
            - |
              #!/bin/bash -xe
              echo ${LogstashVolume} >> /home/ec2-user/ebsid.txt
              {LogstashVolume: Ref: LogstashVolume}
              touch /home/ec2-user/ebscomplete.txt          
              curl "http://169.254.169.254/latest/meta-data/instance-id" >> /home/ec2-user/ec2id.txt 
              touch /home/ec2-user/ec2complete.txt           
              touch /home/ec2-user/complete.txt
            - LogstashVolume: !Ref LogstashVolume    
      SecurityGroupIds:
        - Ref: LogstashSecurityGroup
      SubnetId: subnet-0d0e0989f57b96389
      Tags:
        - Key: Name
          Value: Logstash Instance 

UserData script with Resource Attribute CloudFormation我正在关注此链接，但它仍然不起作用当新实例启动时。/home/ec2-user 中没有任何内容。我到处寻找，这是我的最终结果，但没有成功谁能帮我解决一下吗？

Answer 1

您的UserData中至少存在一个语法错误:

echo ${LogstashVolume}) >> /home/ec2-user/ebsid.txt

应该是

echo ${LogstashVolume} >> /home/ec2-user/ebsid.txt

要进一步调试 UserData，请登录实例并检查 /var/log/could-init-output.log 文件。

附注

以下也是不正确的:

{LogstashVolume: Ref: LogstashVolume}

这不是一个有效的 bash 命令。