How to set "environmentVariables": {} in templates.json

[pcharasala]

Have been looking for help hours on how to set "environmentVariables": {} in .aws templates.json.
Have tried "environmentVariables": {"key":"value"}
"environmentVariables": {"Variablkes":[{"key":"value"}]}
"environmentVariables": [{"key":"value"},]

None works.
Please help.

[awschristou]

Hi @pcharasala the proper configuration is "environmentVariables": {"key":"value"} , however the environment variable must also be defined in your SAM Template file.

Here is an example...

My SAM Template (template.yaml) file has the following resource that contains an environment variable called SAMPLE1:

Resources:
  HelloWorldFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: hello-world/
      Handler: app.lambdaHandlerN10
      Runtime: nodejs10.x
      Environment:
        Variables:
          SAMPLE1: Default Sample 1 Value

My configuration for environment variables looks like this:

          "environmentVariables": {
              "SAMPLE1": "My sample 1 value"
          }

Can you please check your template and configuration and report back?

[pcharasala]

Hi @awschristou,

Thank you! Thank you! That works.
The piece I was missing is the fact that environment variable keys must be there at both template.yaml and templates.json.
I have tested with multiple variables too and I am giving it here could be useful to someone else.
In the temlate.yaml..

Resources:
  HelloWorldFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: hello-world/
      Handler: app.lambdaHandlerN10
      Runtime: nodejs10.x
      Environment:
        Variables:
          SAMPLE1: Default Sample 1 Value
         SAMPLE2: Default Sample2 Value

and in templates.json running configuration as

{
    "templates": {
        "sam-app/template.yaml": {
            "handlers": {
                "app.lambda_handler": {
                    "event": {},
                    "environmentVariables": {"SAMPLE1": "My sample 1 value", "SAMPLE2": "My Sample2"}
                }
            }
        }
    }
}