auto_scaling.yml

apiVersion: v1
kind: Namespace
metadata:
  name: apache-php
---
apiVersion: v1
kind: Service
metadata:
  namespace: apache-php
  labels:
    run: apache-php
  name: apache-php-svc
spec:
  externalTrafficPolicy: Cluster
  ports:
  - port: 80
    protocol: TCP
    targetPort: 8080
  selector:
    run: apache-php
  type: NodePort
---
apiVersion: apps/v1
kind: Deployment
metadata:
  namespace: apache-php
  labels:
    run: apache-php
  name: apache-php-dep
spec:
  replicas: 1
  selector:
    matchLabels:
      run: apache-php
  template:
    metadata:
      labels:
        run: apache-php
    spec:
      containers:
      - image: ehazlett/docker-demo
      # - image: dtr.docker.ee/engineering/apache-php:latest
        name: apache-php
        ports:
        - containerPort: 8080
          protocol: TCP
        resources:
          limits:
            cpu: 200m
          requests:
            cpu: 50m
---
kind: Ingress
apiVersion: networking.k8s.io/v1beta1
metadata:
  namespace: apache-php
  name: apache-php-ing
  annotations:
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - host: "apache.kube.docker.ee" # layer7 ingress host
    http:
      paths:
      - path: /
        backend:
          serviceName: apache-php-svc
          servicePort: 80
---
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
  name: apache-php-hpa
  namespace: apache-php
spec:
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: apache-php-dep
  minReplicas: 1
  maxReplicas: 10
  #targetCPUUtilizationPercentage: 50
  metrics:
  - type: Resource
    resource:
      name: cpu
      targetAverageUtilization: 50