How to deploy existing application on AWS IoT Greengrass?

You should explore to develop AWS IoT Greengrass components [1] and update your application to be deployed as a component. Every component is composed of a recipe and artifacts. The recipe file defines the component‘s metadata. This includes the component’s configuration parameters, component dependencies, lifestyle, and platform compatibility. The lifecycle defines the commands to install, run, and shut down the component. It can be defined in YAML and JSON format. Artifacts are optional and consist of component binaries and may include scripts, compiled code, static resources, and any other files that a component consumes. Refer to 5 tips to build AWS IoT Greengrass v2 Components [2]

There is also a sample workshop/tutorial which you can refer and see if you can utilize for your app [3]

1. https://docs.aws.amazon.com/greengrass/v2/developerguide/develop-greengrass-components.html
2. https://aws.amazon.com/blogs/iot/5-tips-to-build-aws-iot-greengrass-v2-components/
3. https://catalog.us-east-1.prod.workshops.aws/workshops/5ecc2416-f956-4273-b729-d0d30556013f/en-US/chapter4-createfirstcomp

Hi,

if you have installed Greengrass on the machine, you should be able to run your application as a component with the same permissions and user requirements that you would use in case you were running the application directly from the host.

By default components in Greengrass are executed by ggc_user:ggc_group or whatever user and group was specified during the AWS Greengrass core software installation.

This user and group can also be overridden during deployment on a component by component basis, by specifying an alternative user and group as part of the component configuration (see https://docs.aws.amazon.com/greengrass/v2/developerguide/create-deployments.html - runWith).

In the console (as part of the deployment wizard):

Cheers,

Massimiliano