Merge pull request #101130 from laurenhughes/manifest-hpa

Add manifest hpa instructions

Author: PRMerger16

articles/aks/tutorial-kubernetes-scale.md

@@ -6,7 +6,7 @@ author: mlearned
 
 ms.service: container-service
 ms.topic: tutorial
-ms.date: 12/19/2018
+ms.date: 01/14/2019
 ms.author: mlearned
 ms.custom: mvc
 
@@ -98,6 +98,43 @@ The following example uses the [kubectl autoscale][kubectl-autoscale] command to
 kubectl autoscale deployment azure-vote-front --cpu-percent=50 --min=3 --max=10
 ```
 
+Alternatively, you can create a manifest file to define the autoscaler behavior and resource limits. The following is an example of a manifest file named `azure-vote-hpa.yaml`.
+
+```yaml
+apiVersion: autoscaling/v1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: azure-vote-back-hpa
+spec:
+  maxReplicas: 10 # define max replica count
+  minReplicas: 3  # define min replica count
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: azure-vote-back
+  targetCPUUtilizationPercentage: 50 # target CPU utilization
+
+
+apiVersion: autoscaling/v1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: azure-vote-front-hpa
+spec:
+  maxReplicas: 10 # define max replica count
+  minReplicas: 3  # define min replica count
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: azure-vote-front
+  targetCPUUtilizationPercentage: 50 # target CPU utilization
+```
+
+Use `kubectl apply` to apply the autoscaler defined in the `azure-vote-hpa.yaml` manifest file.
+
+```
+$ kubectl apply -f azure-vote-hpa.yaml
+```
+
 To see the status of the autoscaler, use the `kubectl get hpa` command as follows:
 
 ```