cron scaler

Author: shcherbak

charts/synapse/Chart.yaml

@@ -1,3 +1,3 @@
 ---
 name: synapse
-version: 0.23.0
+version: 0.24.0

charts/synapse/templates/synapse-hpa.yaml

@@ -1,6 +1,6 @@
 {{- range $worker, $options := .Values.synapse.autoscalingWorkers }}
-{{- if $options.autoscaling.enabled }}
 {{- $name := $worker | replace "_" "-"}}
+{{- if $options.autoscaling.enabled }}
 ---
 apiVersion: autoscaling/v2
 kind: HorizontalPodAutoscaler
@@ -19,7 +19,7 @@ spec:
       name: cpu
       target:
         type: Utilization
-        averageUtilization: 75
+        averageUtilization: 65
   behavior:
     scaleDown:
       stabilizationWindowSeconds: 300
@@ -34,4 +34,23 @@ spec:
         value: 2
         periodSeconds: 15
 {{- end }}
+{{- if $options.kedaAutoscaling.enabled }}
+---
+apiVersion: keda.sh/v1alpha1
+kind: ScaledObject
+metadata:
+  name: synapse-{{ $name }}-cron
+spec:
+  scaleTargetRef:
+    name: synapse-{{ $name }}
+  minReplicaCount: {{ $options.kedaAutoscaling.minReplicaCount }}
+  cooldownPeriod: 300
+  triggers:
+  - type: cron
+    metadata:
+      timezone: {{ $options.kedaAutoscaling.timezone | quote }}
+      start: {{ $options.kedaAutoscaling.start | quote }}
+      end: {{ $options.kedaAutoscaling.end | quote }}
+      desiredReplicas: {{ $options.kedaAutoscaling.desiredReplicas | quote }}
+{{- end }}
 {{- end }}

charts/synapse/values.yaml

@@ -36,27 +36,63 @@ synapse:
     federation_sender:
       replicas: 1
       resources: {}
+      # https://keda.sh/docs/2.17/scalers/cron/
+      kedaAutoscaling:
+        enabled: false
+        timezone: "Europe/Kyiv"
+        start: "0 9 * * *"
+        end: "0 19 * * *"
+        desiredReplicas: 5
+        minReplicaCount: 2
+      # HPA
       autoscaling:
         enabled: true
         minReplicas: 1
         maxReplicas: 10
     client_reader:
       replicas: 2
       resources: {}
+      # https://keda.sh/docs/2.17/scalers/cron/
+      kedaAutoscaling:
+        enabled: false
+        timezone: "Europe/Kyiv"
+        start: "0 9 * * *"
+        end: "0 19 * * *"
+        desiredReplicas: 15
+        minReplicaCount: 5
+      # HPA
       autoscaling:
         enabled: true
         minReplicas: 1
         maxReplicas: 10
     event_creator:
       replicas: 2
       resources: {}
+      # https://keda.sh/docs/2.17/scalers/cron/
+      kedaAutoscaling:
+        enabled: false
+        timezone: "Europe/Kyiv"
+        start: "0 9 * * *"
+        end: "0 19 * * *"
+        desiredReplicas: 5
+        minReplicaCount: 2
+      # HPA
       autoscaling:
         enabled: true
         minReplicas: 1
         maxReplicas: 10
     media_repository:
       replicas: 2
       resources: {}
+      # https://keda.sh/docs/2.17/scalers/cron/
+      kedaAutoscaling:
+        enabled: false
+        timezone: "Europe/Kyiv"
+        start: "0 9 * * *"
+        end: "0 19 * * *"
+        desiredReplicas: 5
+        minReplicaCount: 2
+      # HPA
       autoscaling:
         enabled: true
         minReplicas: 1