Question regarding existing resources. I've defined a resource group with the azure native provider in code and this resource group already exists in azure. I have an empty stack. If I do pulumi refresh it does not add the resource group. Do I have to import it? If so, how does this scale to many existing resources - I have to manually look up all the resource IDs and construct import commands for each one? Is there a better way to achieve this?

yes you have to import it, you can use an import file to automate this: https://www.pulumi.com/docs/reference/cli/pulumi_import/

Thanks. Any idea why there is no option to "refresh" from the code? Seems like unnecessary overhead to have to manually import when pulumi could do from the name defined in the code.

refresh reconciles the cloud provider API with pulumi state. If you haven’t imported the resource into state it can’t do any refresh

the resource ID is made up from the resource group and the name, which are both in the code