feat: add hpa for router (#568)

* feat: add hpa for router

Signed-off-by: BrianPark314 <[email protected]>

* feat: add hpa for router

Signed-off-by: BrianPark314 <[email protected]>

* fix: correct memory request

Signed-off-by: BrianPark314 <[email protected]>

* fix: correct resource management

Signed-off-by: BrianPark314 <[email protected]>

---------

Signed-off-by: BrianPark314 <[email protected]>
Co-authored-by: BrianPark314 <[email protected]>

Author: BrianPark314

helm/templates/deployment-router.yaml

@@ -7,7 +7,11 @@ metadata:
   labels:
   {{- include "chart.routerLabels" . | nindent 4 }}
 spec:
+{{- if .Values.routerSpec.autoscaling.enabled }}
+  replicas: {{ .Values.routerSpec.autoscaling.minReplicas }}
+{{- else }}
   replicas: {{ .Values.routerSpec.replicaCount }}
+{{- end }}
   {{- include "chart.routerStrategy" . | nindent 2 }}
   selector:
     matchLabels:
@@ -118,8 +122,12 @@ spec:
           {{- end }}
           {{- if .Values.routerSpec.resources.limits }}
           limits:
+            {{- if .Values.routerSpec.resources.limits.cpu }}
             cpu: "{{ .Values.routerSpec.resources.limits.cpu }}"
+            {{- end }}
+            {{- if .Values.routerSpec.resources.limits.memory }}
             memory: "{{ .Values.routerSpec.resources.limits.memory }}"
+            {{- end }}
           {{- end }}
         {{- end }}
         ports:

helm/templates/hpa-router.yaml

@@ -0,0 +1,23 @@
+{{- if .Values.routerSpec.autoscaling.enabled -}}
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: "{{ .Release.Name }}-router-hpa"
+  namespace: {{ .Release.Namespace }}
+  labels:
+  {{- include "chart.routerLabels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: "{{ .Release.Name }}-deployment-router"
+  minReplicas: {{ .Values.routerSpec.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.routerSpec.autoscaling.maxReplicas }}
+  metrics:
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.routerSpec.autoscaling.targetCPUUtilizationPercentage }}
+{{- end -}}

helm/values.schema.json

@@ -398,6 +398,15 @@
         "replicaCount": {
           "type": "integer"
         },
+        "autoscaling": {
+          "type": "object",
+          "properties": {
+            "enabled": {"type": "boolean"},
+            "minReplicas": {"type": "integer"},
+            "maxReplicas": {"type": "integer"},
+            "targetCPUUtilizationPercentage": {"type": "integer"}
+          }
+        },
         "containerPort": {
           "type": "integer"
         },

helm/values.yaml

@@ -268,6 +268,13 @@ routerSpec:
   # -- Number of replicas
   replicaCount: 1
 
+  # -- autoscaling configuration
+  autoscaling:
+    enabled: false
+    minReplicas: 1
+    maxReplicas: 3
+    targetCPUUtilizationPercentage: 80
+
   # -- Priority Class
   priorityClassName: ""
 
@@ -314,11 +321,10 @@ routerSpec:
   # -- router resource requests and limits
   resources:
     requests:
-      cpu: "4"
-      memory: "16G"
+      cpu: 400m
+      memory: 500Mi
     limits:
-      cpu: "8"
-      memory: "32G"
+      memory: 500Mi
 
   # -- Customized labels for the router deployment
   labels: