Let the windows installer create the service with the -config.expand-env parameter

[ToonTijtgat2]

Request

It would be nice if it's possible to run the windows installer of the grafana agent with a parameter to create the windows service with the -config.expand-env parameter

Use case

installing grafana agent on windows

[github-actions]

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[erikbaranowski]

I'm taking a look. This should be reasonable to do and see what the team thinks.

[erikbaranowski]

I should mention... this is a static mode specific feature request as flow mode makes use of a standard library function and does not require a CLI flag for this functionality: https://grafana.com/docs/agent/next/flow/reference/stdlib/env/

[erikbaranowski]

I have a draft PR #5958 and built the windows installer locally. I plan to keep playing around in January as I experiment with testing the windows installer locally to confirm it is working as intended

[dmitrydonskih]

@erikbaranowski could you also check "silent" installer mode?
Nullsoft installer allows unattended install/unninstall with /S parameter. No need to say how useful it is.
Customizable options should be available in this mode also, by command-line parameters.
Thanks for your work!