{
  "$schema": "http://json-schema.org/schema#", 
  "required": [
    "scaleRef", 
    "maxReplicas"
  ], 
  "type": "object", 
  "description": "specification of a horizontal pod autoscaler.", 
  "properties": {
    "minReplicas": {
      "type": "integer", 
      "description": "lower limit for the number of pods that can be set by the autoscaler, default 1.", 
      "format": "int32"
    }, 
    "scaleRef": {
      "description": "reference to Scale subresource; horizontal pod autoscaler will learn the current resource consumption from its status, and will set the desired number of pods by modifying its spec.", 
      "$ref": "_definitions.json#/definitions/v1beta1.SubresourceReference"
    }, 
    "cpuUtilization": {
      "description": "target average CPU utilization (represented as a percentage of requested CPU) over all the pods; if not specified it defaults to the target CPU utilization at 80% of the requested resources.", 
      "$ref": "_definitions.json#/definitions/v1beta1.CPUTargetUtilization"
    }, 
    "maxReplicas": {
      "type": "integer", 
      "description": "upper limit for the number of pods that can be set by the autoscaler; cannot be smaller than MinReplicas.", 
      "format": "int32"
    }
  }
}