In general, how can I get the group name for any type of resource?
And in particular, what should I use for group here:
- path: cm.patch.yaml
target:
kind: ConfigMap
group: "" # <------
version: v1
name: my-confifIs it the empty string?
Look in the Kubernetes API documentation.
If you look at, for example, StorageClass, it says at the top of the page
apiVersion: storage.k8s.io/v1
So for this object, the group is storage.k8s.io, the version is v1, and the kind is StorageClass.
The ConfigMap page says just
apiVersion: v1
This is in the "core" group, and an empty string as you have it in the question is correct.