k8s水平扩容

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FROM php:5-apache     
COPY index.php /var/www/html/index.php     
RUN chmod a+rx index.php     

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<?php     
  $x = 0.0001;     
  for ($i = 0; $i <= 1000000; $i++) {     
    $x += sqrt($x);     
  }     
  echo "OK!";     
?>     

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apiVersion: apps/v1     
kind: Deployment     
metadata:     
  name: php-apache     
spec:     
  selector:     
    matchLabels:     
      run: php-apache     
  replicas: 1     
  template:     
    metadata:     
      labels:     
        run: php-apache     
    spec:     
      imagePullSecrets:     
      - name: regcred     
      containers:     
      - name: php-apache     
        image: registry.bboysoul.cn/hpa-example:latest     
        ports:     
        - containerPort: 80     
        resources:     
          limits:     
            cpu: 500m     
          requests:     
            cpu: 200m     
     
---     
     
apiVersion: v1     
kind: Service     
metadata:     
  name: php-apache     
  labels:     
    run: php-apache     
spec:     
  type: LoadBalancer     
  ports:     
  - port: 80     
  selector:     
    run: php-apache     

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apiVersion: autoscaling/v1     
kind: HorizontalPodAutoscaler     
metadata:     
  name: php-apache     
spec:     
  scaleTargetRef:     
    apiVersion: apps/v1     
    kind: Deployment     
    name: php-apache     
  minReplicas: 1     
  maxReplicas: 10     
  targetCPUUtilizationPercentage: 50