apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
  name: mxjobs.kubeflow.org
spec:
  group: kubeflow.org
  version: v1beta1
  scope: Namespaced
  names:
    kind: MXJob
    singular: mxjob
    plural: mxjobs
  validation:
    openAPIV3Schema:
      properties:
        spec:
          properties:
            mxReplicaSpecs:
              properties:
                # The validation works when the configuration contains
                # `Worker`, `Server`, `Scheduler`, 
                # `TunerTracker`, `TunerServer`, `Tuner`,
                # Otherwise it will not be validated.
                Scheduler:
                  properties:
                    replicas:
                      type: integer
                      minimum: 1
                      maximum: 1
                Worker:
                  properties:
                    replicas:
                      type: integer
                      minimum: 1
                Server:
                  properties:
                    replicas:
                      type: integer
                      minimum: 1
                TunerTracker:
                  properties:
                    replicas:
                      type: integer
                      minimum: 1
                      maximum: 1
                TunerServer:
                  properties:
                    replicas:
                      type: integer
                      minimum: 1
                Tuner:
                  properties:
                    replicas:
                      type: integer
                      minimum: 1
                      maximum: 1