user-service-deployment.yaml

---
apiVersion: v1
kind: Service
metadata:
  name: user-service
spec:
  selector:
    app: user-service
  ports:
    - protocol: TCP
      # use the default port simplify FeignClient configuration
      port: 80
      targetPort: 9004

---
# Reference: https://kubernetes.io/docs/tasks/run-application/run-stateless-application-deployment/
apiVersion: apps/v1
kind: Deployment
metadata:
  name: userservice-deployment
spec:
  selector:
    matchLabels:
      app: user-service
  replicas: 1 # tells deployment to run 2 pods matching the template
  template:
    metadata:
      labels:
        app: user-service
    spec:
      containers:
        - name: user-service
          image: user-service:0.0.1
          # https://iximiuz.com/en/posts/kubernetes-kind-load-docker-image/
          # https://kubernetes.io/docs/concepts/containers/images/#updating-images
          imagePullPolicy: Never
          ports:
            - containerPort: 9004
          resources:
            requests:
              memory: "256Mi"
              cpu: "250m"
            limits:
              memory: "512Mi"
              cpu: "500m"



---
# Reference: https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale-walkthrough/
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
  name: php-apache
spec:
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: userservice-deployment
  minReplicas: 1
  maxReplicas: 2
  metrics:
    - type: Resource
      resource:
        name: cpu
        target:
          type: Utilization
          averageUtilization: 50
#    - type: Pods
#      pods:
#        metric:
#          name: packets-per-second
#        target:
#          type: AverageValue
#          averageValue: 0.5k
#    - type: Object
#      object:
#        metric:
#          name: requests-per-second
#        describedObject:
#          apiVersion: networking.k8s.io/v1
#          kind: Ingress
#          name: main-route
#        target:
#          type: Value
#          value: 10