Kustomize
https://github.com/kubernetes-sigs/kustomize
https://www.eksworkshop.com/docs/introduction/kustomize/
Kustomization resource schema - https://www.schemastore.org/kustomization.json
Tutorial
- https://kubernetes.io/docs/tasks/manage-kubernetes-objects/kustomization/
- https://kubectl.docs.kubernetes.io/guides/introduction/kustomize/
It's like make, in that what it does is declared in a file, and it's like sed, in that it emits edited text.
Examples: