Does the import feature of Pulumi actually work ? I've tried over several AWS resources, the latest one being S3 : never managed to import a single thing. I got the following error message after running

pulumi preview

on the S3 example template I attached:

Diagnostics:

pulumipulumiStack (nuage-admin-dev):

error: preview failed

awss3Bucket (nuage-test):

error: Preview failed: importing arnawss3::nuage test Error importing AWS S3 bucket policy: InvalidARNError: invalid ARN

caused by: invalid Amazon S3 ARN, unknown resource type, arnawss3:::nuage-test

I believe you can just pass the name

nuage-test

as the import id. I’m surprised the error is so bad - but I expect it will work with the name instead of the ARN.

Just passing

nuage-test

instead of the full ARN does not work either. The

pulumi preview

diagnostic returns an error:

Diagnostics:

awss3Bucket (nuage-test):

warning: inputs to import do not match the existing resource; importing this resource will fail

And if I ignore it and

pulumi up

anyway, I get an error:

Diagnostics:

pulumipulumiStack (nuage-admin-dev):

error: update failed

awss3Bucket (nuage-test):

error: inputs to import do not match the existing resource

Presumably that error message is accompanied by a diff? You will need to provide matching inputs to be able to import the resource (to avoid unintentionally changing or replacing the resource). See https://www.pulumi.com/docs/intro/concepts/programming-model/#import. Also https://www.pulumi.com/blog/adopting-existing-cloud-resources-into-pulumi/.

Thanks @white-balloon-205, you were right : the problem was that I didn't define the

cors_rules

The thing is though, that in Terraform you can import an S3 Bucket into your

.tfstate

without needing to define everything (diff will be calculated later). You can actually use your

.tfstate

to fill the missing values in your template and avoid the diff, which saves a huge amount of time. It's a pretty big issue (IMHO) that you can't do the same thing in Pulumi. I actually had to copy into Pulumi the

cors_rules

from the state I imported into Terraform, as it is quite difficult to list the exact rules with just the AWS Console & Pulumi's docs In terms of UX, it would be great to be able to manually set up some Cloud resources, easily pull the configs using the CLI and then use that as boilerplate to get everything under Pulumi management and extend it programatically from there on

Yes - the Pulumi behavior here is different. Either way though - you will need to have a source file that matches what you have deployed - or else you will change what you have deployed in the next update Definitely being able to show you the proposed source code you could use to represent that same thing that is in the cloud would be helpful. This is part of what https://github.com/pulumi/pulumi/issues/1635 is tracking. Please do add any notes there on what you would expect to see here.