No matter how you like to participate in developer communities, Pulumi wants to meet you there. If you want to meet other Pulumi users to share use-cases and best practices, contribute code or documentation, see us at an event, or just tell a story about something cool you did with Pulumi, you are part of our community.

Pulumi Community

I am trying to write a Pulumi script to create a new volume and also support attaching the create volume to the instance (in case the instance is deleted and replaced) in every update.

In that case I think you just need an `aws.ec2.EbsVolume` resource and an `aws.ec2.EbsVolumeAttachment` resource

and how do I ensure that the existing EbsVolume is attached to the instance in case the instance was replaced?

That’s what the attachment resource does