Creating a snapshot from packer

[nnat...@ucsd.edu]

I am using packer to create a bunch of images. I want to be able to launch an instance from an image and swap out its root volume to create another image. So I was thinking about stopping the instance and "snapshotting" the new root volume to create an image. I'd like to accomplish this using packer. Is there a way to create snapshots using packer? Is there a recommended approach to accomplishing this? Thanks! 

[Rickard von Essen]

I'm not sure I understand what you want but an EBS backed AMI refers snapshot so those are created when the AMI is created. Also when you launch the instance use to create the new AMI you can override any volume with launch_block_device_mappings.

But if you don't want to do any provisioning you might be better off using the cli directly. 

On Fri, Feb 8, 2019, 23:41 <nnat...@ucsd.edu wrote:

I am using packer to create a bunch of images. I want to be able to launch an instance from an image and swap out its root volume to create another image. So I was thinking about stopping the instance and "snapshotting" the new root volume to create an image. I'd like to accomplish this using packer. Is there a way to create snapshots using packer? Is there a recommended approach to accomplishing this? Thanks! 

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[nnat...@ucsd.edu]

Is it possible to create snapshots from a volume in packer? I want to remove a volume from a stopped instance, snapshot it, and then mount an empty volume to the stopped instance and start it again. 

[Rickard von Essen]

Packer can't make a snapshot from a volume, use the cli for that. Packer was built to reproducible create images from code. A volume of a running instance makes the starting state undefined. 

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