kubevela/docs/examples/registry/hpa.yaml

apiVersion: core.oam.dev/v1beta1
kind: TraitDefinition
metadata:
  annotations:
    definition.oam.dev/description: "configure k8s HPA for Deployment"
  name: hpa
spec:
  appliesToWorkloads:
    - webservice
    - worker
  podDisruptive: true
  schematic:
    cue:
      template: |
        outputs: hpa: {
        	apiVersion: "autoscaling/v2beta2"
        	kind:       "HorizontalPodAutoscaler"
        	metadata: name: context.name
        	spec: {
        		scaleTargetRef: {
        			apiVersion: "apps/v1"
        			kind:       "Deployment"
        			name:       context.name
        		}
        		minReplicas: parameter.min
        		maxReplicas: parameter.max
        		metrics: [{
        			type: "Resource"
        			resource: {
        				name: "cpu"
        				target: {
        					type:               "Utilization"
        					averageUtilization: parameter.cpuUtil
        				}
        			}
        		}]
        	}
        }
        parameter: {
        	min:     *1 | int
        	max:     *10 | int
        	cpuUtil: *50 | int
        }