php-apache-hpa.yml

# The same command to create an HPA imperatively is:
# 
# kubectl autoscale deployment <deployment name> --cpu-percent=50 --min=1 --max=10
#
# To deploy this HPA use:
# 
# kubectl create -f php-apache-hpa.yml
# 
apiVersion: autoscaling/v1
kind: HorizontalPodAutoscaler
metadata:
  name: php-apache
  namespace: default
spec:
  maxReplicas: 10
  minReplicas: 1
  scaleTargetRef:
    apiVersion: extensions/v1beta1
    kind: Deployment
    name: php-apache
  targetCPUUtilizationPercentage: 50