cf_parameters

https://github.com/jlordiales/easy_cf_parameters.git

CloudFormation JSON files to specify input parameters are cumbersome to write. They also don't provide any easy way to specify values from enviroment variables. This small script allows you to specify key/value pairs in YAML format with the added capability of resolving those values from enviroment variables. You can write the output to a file and pass that to CloudFormation together with your template.