cloudformation- 如何在 AWS::CloudFormation::Init 部分的来源中使用 Ref？

Question

I'm trying to write sources inside AWS::CloudFormation::Init to take a parameter like below:我正在尝试在AWS::CloudFormation::Init中编写源代码以获取如下参数：

"Parameters" : {
    "Environment" : {
            "Description" : "The Environment",
            "Type" : "String",
            "AllowedValues" : [
                "DEV",
                "QA",
                "UAT",
                "PROD"
            ]
        }
}

Below is my Metadata section:下面是我的元数据部分：

"LaunchTemplate": {
    "Type": "AWS::EC2::LaunchTemplate",
        "Metadata": {
            "Comment" : "Install application",
            "AWS::CloudFormation::Init" : {
                    "configSets" : {
                        "full_install" : [ "prepare", "app-deployment" ]
                    },
            "app-deployment" : {
                    "sources": {
                        "Fn::Join":["",["/app/",{"Ref": "Environment"},"/appname"]] : "https://xyz.s3.amazonaws.com/appname.tar"
                    },
                    "files": {
                        "Fn::Join":["",["/opt/",{"Ref": "Environment"},"/index.html"]] : {
                    "content" : "<html><title>HelloTitle</title><body><h1>header H1</h1></body></html>"
                }

This is not working.这是行不通的。 Can I user Ref function to use parameter this way inside sources and files section??我可以使用Ref function 在sources和files部分中以这种方式使用参数吗？

Answer 1

I don't think you can do this.我不认为你能做到这一点。

However, the workaround would be to use to use commands section.但是，解决方法是使用 to use commands部分。

I can demonstrate the idea behind the workaround using yaml (its what I personal use) including multiline files:我可以使用yaml （我个人使用的）演示解决方法背后的想法，包括多行文件：

commands: 

  04_setup_index_html:
    command: !Sub |
      mkdir -p /opt/${Environment}

      echo "<html><title>HelloTitle</title><body><h1>header H1</h1></body></html>" \
        > /opt/${Environment}/index.html

  05_setup_index2_html_multiline:
    command: !Sub |
      mkdir -p /opt/${Environment}

      cat >/opt/${Environment}/index2.html << EOL
      <html>
          <title>HelloTitle</title>
          <body>
            <h1>header H1</h1>
          </body>
      </html>
      EOL

This way you can create your files and folders dynamically based on the template Parameters .这样您就可以根据模板Parameters动态创建文件和文件夹。

Same of course would be possible in json , but I don't have a tested working example right now.当然json也可以，但我现在没有经过测试的工作示例。 The snipped in yaml provided works for sure. yaml中的片段肯定可以正常工作。

cloudformation- 如何在 AWS::CloudFormation::Init 部分的来源中使用 Ref？

问题描述

1 个解决方案

解决方案1
2 已采纳 2020-05-13 12:07:52

cloudformation- 如何在 AWS::CloudFormation::Init 部分的来源中使用 Ref？

问题描述

1 个解决方案

解决方案1 2 已采纳 2020-05-13 12:07:52

解决方案1
2 已采纳 2020-05-13 12:07:52