Get specific parameters from CloudFormation











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I'm trying to fetch some parameters from CloudFormation and save them to file.



Example parameters:



Parameters:
Parameter_A:
Type: Number
Parameter_B:
Type: String
Parameter_C:
Type: String
NoEcho: True
Parameter_D:
Type:String
NoEcho: True


Now I would like to automatically create file that contains only NoEcho parameters, without doing it this way:



Resources: 
MyInstance:
Type: AWS::EC2::Instance
Metadata:
AWS::CloudFormation::Init:
config:
files:
/tmp/some_file:
content: !Sub |
${Parameter_C}
${Parameter_D}
...



Expected output: File containing values of Parameter_C and Parameter_D



Expected output after adding NoEcho option to Parameter_A: File
containing values of Parameter_A, Parameter_C and Parameter_D




I cannot do it in UserData field.
Is there any way I can accomplish that?



Any help will be highly appreciated!










share|improve this question




























    up vote
    0
    down vote

    favorite












    I'm trying to fetch some parameters from CloudFormation and save them to file.



    Example parameters:



    Parameters:
    Parameter_A:
    Type: Number
    Parameter_B:
    Type: String
    Parameter_C:
    Type: String
    NoEcho: True
    Parameter_D:
    Type:String
    NoEcho: True


    Now I would like to automatically create file that contains only NoEcho parameters, without doing it this way:



    Resources: 
    MyInstance:
    Type: AWS::EC2::Instance
    Metadata:
    AWS::CloudFormation::Init:
    config:
    files:
    /tmp/some_file:
    content: !Sub |
    ${Parameter_C}
    ${Parameter_D}
    ...



    Expected output: File containing values of Parameter_C and Parameter_D



    Expected output after adding NoEcho option to Parameter_A: File
    containing values of Parameter_A, Parameter_C and Parameter_D




    I cannot do it in UserData field.
    Is there any way I can accomplish that?



    Any help will be highly appreciated!










    share|improve this question


























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I'm trying to fetch some parameters from CloudFormation and save them to file.



      Example parameters:



      Parameters:
      Parameter_A:
      Type: Number
      Parameter_B:
      Type: String
      Parameter_C:
      Type: String
      NoEcho: True
      Parameter_D:
      Type:String
      NoEcho: True


      Now I would like to automatically create file that contains only NoEcho parameters, without doing it this way:



      Resources: 
      MyInstance:
      Type: AWS::EC2::Instance
      Metadata:
      AWS::CloudFormation::Init:
      config:
      files:
      /tmp/some_file:
      content: !Sub |
      ${Parameter_C}
      ${Parameter_D}
      ...



      Expected output: File containing values of Parameter_C and Parameter_D



      Expected output after adding NoEcho option to Parameter_A: File
      containing values of Parameter_A, Parameter_C and Parameter_D




      I cannot do it in UserData field.
      Is there any way I can accomplish that?



      Any help will be highly appreciated!










      share|improve this question















      I'm trying to fetch some parameters from CloudFormation and save them to file.



      Example parameters:



      Parameters:
      Parameter_A:
      Type: Number
      Parameter_B:
      Type: String
      Parameter_C:
      Type: String
      NoEcho: True
      Parameter_D:
      Type:String
      NoEcho: True


      Now I would like to automatically create file that contains only NoEcho parameters, without doing it this way:



      Resources: 
      MyInstance:
      Type: AWS::EC2::Instance
      Metadata:
      AWS::CloudFormation::Init:
      config:
      files:
      /tmp/some_file:
      content: !Sub |
      ${Parameter_C}
      ${Parameter_D}
      ...



      Expected output: File containing values of Parameter_C and Parameter_D



      Expected output after adding NoEcho option to Parameter_A: File
      containing values of Parameter_A, Parameter_C and Parameter_D




      I cannot do it in UserData field.
      Is there any way I can accomplish that?



      Any help will be highly appreciated!







      amazon-web-services amazon-ec2 amazon-cloudformation






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      edited Nov 20 at 9:29

























      asked Nov 19 at 14:57









      Dawid Fieluba

      800521




      800521





























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