Autoscaling template (#62)

Co-authored-by: Moty Fux <[email protected]>
centrifugal · Aug 8, 2023 · 168e01a · 168e01a
1 parent aa7ff83
commit 168e01a
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Showing 3 changed files with 40 additions and 21 deletions.
diff --git a/charts/centrifugo/Chart.yaml b/charts/centrifugo/Chart.yaml
@@ -1,7 +1,7 @@
 apiVersion: v1
 name: centrifugo
 description: Centrifugo is a scalable real-time messaging server in language-agnostic way
-version: 10.0.2
+version: 10.0.3
 appVersion: 5.0.2
 home: https://centrifugal.dev
 icon: https://centrifugal.dev/img/favicon.png

diff --git a/charts/centrifugo/templates/hpa.yaml b/charts/centrifugo/templates/hpa.yaml
@@ -18,28 +18,35 @@ spec:
   minReplicas: {{ .Values.autoscaling.minReplicas }}
   maxReplicas: {{ .Values.autoscaling.maxReplicas }}
   metrics:
+  {{- with .Values.autoscalingTemplate }}
+  {{- toYaml . | nindent 2 }}
+  {{- end }}
   {{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
-    - type: Resource
-      resource:
-        name: cpu
-        {{- if .Capabilities.APIVersions.Has "autoscaling/v2" }}
-        target:
-          type: Utilization
-          averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
-        {{- else }}
-        targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
-        {{- end }}
+  - type: Resource
+    resource:
+      name: cpu
+      {{- if .Capabilities.APIVersions.Has "autoscaling/v2" }}
+      target:
+        type: Utilization
+        averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+      {{- else }}
+      targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+      {{- end }}
   {{- end }}
   {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
-    - type: Resource
-      resource:
-        name: memory
-        {{- if .Capabilities.APIVersions.Has "autoscaling/v2" }}
-        target:
-          type: Utilization
-          averageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
-        {{- else }}
-        targetAverageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
-        {{- end }}
+  - type: Resource
+    resource:
+      name: memory
+      {{- if .Capabilities.APIVersions.Has "autoscaling/v2" }}
+      target:
+        type: Utilization
+        averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+      {{- else }}
+      targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+      {{- end }}
+  {{- end }}
+  {{- with .Values.autoscaling.behavior }}
+  behavior:
+    {{- toYaml . | nindent 4 }}
   {{- end }}
 {{- end }}
diff --git a/charts/centrifugo/values.yaml b/charts/centrifugo/values.yaml
@@ -161,6 +161,18 @@ autoscaling:
   maxReplicas: 100
   targetCPUUtilizationPercentage: 80
   # targetMemoryUtilizationPercentage: 80
+  behavior: {}
+
+autoscalingTemplate: []
+  # Custom or additional autoscaling metrics
+  # ref: https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/#support-for-custom-metrics
+  # - type: Pods
+  #   pods:
+  #     metric:
+  #       name: centrifugo_node_num_clients
+  #     target:
+  #       type: AverageValue
+  #       averageValue: 10k
 
 podDisruptionBudget:
   enabled: false