kubernetes-handbook/manifests/HPA/sample-metrics-app.yaml

apiVersion: apps/v1beta1
kind: Deployment
metadata:
  labels:
    app: sample-metrics-app
  name: sample-metrics-app
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: sample-metrics-app
    spec:
      containers:
      - image: harbor-001.jimmysong.io/library/autoscale-demo:v0.1.2
        name: sample-metrics-app
        ports:
        - name: web
          containerPort: 8080
        readinessProbe:
          httpGet:
            path: /
            port: 8080
          initialDelaySeconds: 3
          periodSeconds: 5
        livenessProbe:
          httpGet:
            path: /
            port: 8080
          initialDelaySeconds: 3
          periodSeconds: 5
---
apiVersion: v1
kind: Service
metadata:
  name: sample-metrics-app
  labels:
    app: sample-metrics-app
spec:
  ports:
  - name: web
    port: 80
    targetPort: 8080
  selector:
    app: sample-metrics-app
---
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: sample-metrics-app
  labels:
    service-monitor: function
spec:
  selector:
    matchLabels:
      app: sample-metrics-app
  endpoints:
  - port: web
---
kind: HorizontalPodAutoscaler
apiVersion: autoscaling/v2beta1
metadata:
  name: sample-metrics-app-hpa
spec:
  scaleTargetRef:
    kind: Deployment
    name: sample-metrics-app
  minReplicas: 2
  maxReplicas: 10
  metrics:
  - type: Object
    object:
      target:
        kind: Service
        name: sample-metrics-app
      metricName: http_requests
      targetValue: 100