Add KEDA Scaler Configurations

k8s/Cluster/KEDA/README.md

@@ -15,3 +15,4 @@ helm upgrade --install keda kedacore/keda -n keda
 
 ![https://blog.cloudacode.com/how-to-autoscale-kubernetes-pods-based-on-ingress-request-prometheus-keda-and-k6-84ae4250a9f3](img.png)
 
+The configuration of proposed scaler name is *open-prediction-scaler.yaml*, while the configuration of default KEDA prometheus Scaler name is *prometheus-scaler.yaml*

k8s/Cluster/KEDA/open-prediction-scaler.yaml

+apiVersion: keda.sh/v1alpha1
+kind: ScaledObject
+metadata:
+  name: open-prediction-scaledobject
+spec:
+  minReplicaCount: 1
+  maxReplicaCount: 10
+  pollingInterval: 300  
+  cooldownPeriod:  5 
+  #idleReplicaCount: 0
+  scaleTargetRef:
+    kind: Deployment
+    name: ms-demo
+  advanced:
+    horizontalPodAutoscalerConfig:                   # Optional. Section to specify HPA related options
+    #name: {name-of-hpa-resource}                   # Optional. Default: keda-hpa-{scaled-object-name}
+      behavior:                                      # Optional. Use to modify HPA's scaling behavior
+        scaleDown:
+          stabilizationWindowSeconds: 30
+          policies:
+          - type: Percent
+            value: 100
+            periodSeconds: 30
+  triggers:
+   - type: open-prediction
+     metadata:
+       history: "1d"
+       stepDuration: "1m"
+       verticalWindow: "1"
+       horizontalWindow: "4"
+       predictionServiceAddress: "10.10.10.80:50051"
+       prometheusAddress: http://prometheus-service.monitoring.svc:9090
+       query: sum(rate(nginx_ingress_controller_requests{path='/demo/(.*)'}[1m]))
+       threshold: '9'
+       #activationThreshold: "0.025"

k8s/Cluster/KEDA/prometheus-scaler.yaml

+apiVersion: keda.sh/v1alpha1
+kind: ScaledObject
+metadata:
+  name: v1-ingress-throughput
+spec:
+  scaleTargetRef:
+    kind: Deployment                       # Optional. Default: Deployment
+    name: hello-world-two                  # Mandatory. Must be in the same namespace as the ScaledObject
+  pollingInterval: 300                              # Optional. Default: 30 seconds
+  cooldownPeriod:   5                              # Optional. Default: 300 seconds
+  minReplicaCount:  1                               # Optional. Default: 0
+  #idleReplicaCount: 0
+  maxReplicaCount:  10                               # Optional. Default: 100
+  advanced:
+     horizontalPodAutoscalerConfig:                   # Optional. Secti    on to specify HPA related options
+     #name: {name-of-hpa-resource}                   # Optional. Defaul    t: keda-hpa-{scaled-object-name}
+        behavior:                                      # Optional. Use t    o modify HPA's scaling behavior
+           scaleDown:
+              stabilizationWindowSeconds: 30
+              policies:
+              - type: Percent
+                value: 100
+                periodSeconds: 30
+
+  triggers:
+    - type: prometheus
+      metadata:
+        serverAddress: http://prometheus-service.monitoring.svc:9090
+        metricName: nginx_ingress_controller_requests
+        threshold: '9'
+        query: sum(rate(nginx_ingress_controller_requests{path="/hello/(.*)"}[1m]))
+        # activationThreshold: "0.025"
+