Reading Password Using `__DATAHUB_TO_FILE_` Directive in DataHub

ingestion
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Original Slack Thread

<@U06TM7M40RK> read password using _DATAHUB_TO_FILE

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To read a password using the __DATAHUB_TO_FILE_ directive in DataHub, you can configure your ingestion recipe to load sensitive data from a file. This approach is useful for handling sensitive information securely, especially when dealing with data sources that require local file access.

Here’s how you can use the __DATAHUB_TO_FILE_ directive:

  1. Define the Directive in Your Recipe: Use the __DATAHUB_TO_FILE_ directive in your recipe to specify that a particular configuration value should be read from a file. The syntax is __DATAHUB_TO_FILE_<property>: <value>, where <property> is the configuration key and <value> is the content to be written to a file.

  2. Example Configuration: Below is an example of how you might configure a MySQL source to read a password from a file:

    source:
  type: mysql
  config:
    host_port: localhost:3306
    database: dbname
    username: root
    options:
      connect_args:
        __DATAHUB_TO_FILE_password: '${MY_SECRET_PASSWORD}'

    In this example, the password is specified using the __DATAHUB_TO_FILE_ directive, which will create a temporary file containing the value of ${MY_SECRET_PASSWORD}. The path to this file will be used as the value for the password configuration.

  3. Environment Variable Substitution: Ensure that the environment variable ${MY_SECRET_PASSWORD} is set in your environment. DataHub will automatically expand this variable when processing the recipe.

  4. Security Considerations: This method helps keep sensitive information out of your recipe files, reducing the risk of accidental exposure. Ensure that your environment variables are managed securely.

Would you like more detailed guidance on setting up this configuration or any other aspect of using DataHub?

Sources:

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Hi <@U08PVDCPJAG>, how did my answer work out for you? Need any more assistance? You can also tag <@U07FV3UHE4D> to let your fellow community members know you’re still looking for guidance.