Hi all. Is it possible to combine multiple stack files? For context, I need to deploy 12 Kubernetes clusters globally and have a separate stack for each cluster. All the clusters are production clusters, so it would be great to overlay each cluster stack onto another config like

Pulumi.production.yaml

. This would make it easy to maintain common configuration in one place.

Could try automation? define one stack, then use that as an overlay/default for others.

I like the idea of the overlay, but I’m wondering how to handle encrypting secrets. If the default production stack has secrets, it wouldn’t work with the overlay because the secrets will have a different

encryptedkey

. Am I understanding this correctly?

well, that's true.

I ended up using this package to merge yaml files. https://github.com/miracl/conflate

filename := "Pulumi.esus-k8s-play-5-a.yaml"

c, err := conflate.FromFiles(filename, "Pulumi.play.yaml")

overlay, err := c.MarshalYAML()

ioutil.WriteFile(filename, overlay, 0644)

I’m using the same

encryptkey

for both stacks, so the overlay doesn’t affect the secrets.

that's awesome 😄