rhn-engineering-jlabocki shared the below

https://github.com/devtron-labs/silver-surfer

Let's ensure we take a look and see if there insights that will help us with Crane 2.

Kubedd

https://github.com/devtron-labs/silver-surfer#motivationMotivation

Currently there is no easy way to upgrade kubernetes objects in case of kubernetes upgrade. There are some tools which are available for this purpose, but we found then inadequate for migration requirements.

kubedd is a tool to check issues in migration of kubernetes yaml objects from one kubernetes version to another.

It uses openapi spec provided by the kubernetes with releases, for eg. in case of target kubernetes version 1.22 openapi spec for 1.22, to validate the kubernetes objects for depreciation or non-conformity with openapi spec.