feat: add horizontal pod autoscaler (#272)

savannahghi · Feb 15, 2024 · 63593f7 · 63593f7
1 parent 902a5de
commit 63593f7
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Showing 4 changed files with 61 additions and 16 deletions.
diff --git a/Dockerfile b/Dockerfile
@@ -1,6 +1,6 @@
-ARG PYTHON_VERSION=3.10-slim-bullseye
+ARG PYTHON_VERSION=3.10-slim-bookworm
 
-FROM node:18-bullseye-slim as client-builder
+FROM node:18-bookworm-slim as client-builder
 
 ARG APP_HOME=/app
 WORKDIR ${APP_HOME}

diff --git a/deploy/charts/mycarehub-backend/templates/deployment.yaml b/deploy/charts/mycarehub-backend/templates/deployment.yaml
@@ -37,7 +37,12 @@ spec:
               containerPort: {{ .Values.service.port }}
               protocol: TCP
           resources:
-            {{- toYaml .Values.resources | nindent 12 }}
+            limits:
+              cpu: {{ .Values.app.resources.limits.cpu }}
+              memory: {{ .Values.app.resources.limits.memory }}
+            requests:
+              cpu: {{ .Values.app.resources.requests.cpu }}
+              memory: {{ .Values.app.resources.requests.memory }}
 
           env:
             - name: GOOGLE_CLOUD_PROJECT

diff --git a/deploy/charts/mycarehub-backend/templates/hpa.yaml b/deploy/charts/mycarehub-backend/templates/hpa.yaml
@@ -0,0 +1,32 @@
+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "mycarehub-backend.fullname" . }}
+  labels:
+    {{- include "mycarehub-backend.labels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "mycarehub-backend.fullname" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+    {{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+    {{- end }}
+    {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: memory
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    {{- end }}
+{{- end }}
diff --git a/deploy/charts/mycarehub-backend/values.yaml b/deploy/charts/mycarehub-backend/values.yaml
@@ -5,15 +5,23 @@
 replicaCount: 1
 
 app:
-    replicaCount: 1
-    container:
-        imagePullPolicy: "Always"
-        port: 8080
-        env:
-            googleApplicationCredentialsSecret:
-                name: "mycarehub-backend-service-account"
-                filePath: "/secrets/gcp/key.json"
-                mountPath: "/secrets/gcp"
+  resources:
+    limits:
+      cpu: 700m
+      memory: 1024Mi
+    requests:
+      cpu: 500m
+      memory: 768Mi
+
+  replicaCount: 1
+  container:
+    imagePullPolicy: "Always"
+    port: 8080
+    env:
+      googleApplicationCredentialsSecret:
+        name: "mycarehub-backend-service-account"
+        filePath: "/secrets/gcp/key.json"
+        mountPath: "/secrets/gcp"
 
 service:
   type: NodePort
@@ -38,8 +46,8 @@ ingress:
   #      - chart-example.local
 
 autoscaling:
-  enabled: false
+  enabled: true
   minReplicas: 1
-  maxReplicas: 100
-  targetCPUUtilizationPercentage: 80
-  # targetMemoryUtilizationPercentage: 80
+  maxReplicas: 20
+  targetCPUUtilizationPercentage: 90
+  targetMemoryUtilizationPercentage: 90