Kube-scheduler plugins/policies configuration

General Discussions
1

Kubernetes version: 1.15+

How kubernetes-scheduler plugins/policies are actually configured? I see 2 options: algorithmSource.policy.configMap and plugins:

algorithmSource:
  policy:
    configMap:
      namespace: kube-system
      name: scheduler.cfg
plugins:
  score:
    enabled:
    - name: NodeResourcesMostAllocated
      weight: 2
    disabled:
    - name: NodeResourcesLeastAllocated

If I understand it right policy is legacy, and all policies are rewritten as score plugins. I tried both options, but the problem is that there is no information in the scheduler log which policies/plugins are actually used and what weights and params they have(even if a log level is -v 10). Another problem is that the scheduler doesn’t throw an error if the plugins object is not properly configured. There is no documentation regarding plugins configuration. I had to look into the code to find the names of the plugins.