Allow rule workers on the small workload node

deploy/helm/ai-spel-rule-engine/templates/deployment.yaml

@@ -26,6 +26,27 @@ spec:
       imagePullSecrets:
         - name: {{ . | quote }}
       {{- end }}
+      {{- with .Values.pod.tolerations }}
+      tolerations: {{- toYaml . | nindent 8 }}
+      {{- end }}
+      affinity:
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+            - weight: 100
+              podAffinityTerm:
+                topologyKey: kubernetes.io/hostname
+                labelSelector:
+                  matchLabels:
+                    app.kubernetes.io/name: {{ .Chart.Name }}
+                    app.kubernetes.io/instance: {{ .Release.Name }}
+      topologySpreadConstraints:
+        - maxSkew: 1
+          topologyKey: kubernetes.io/hostname
+          whenUnsatisfiable: ScheduleAnyway
+          labelSelector:
+            matchLabels:
+              app.kubernetes.io/name: {{ .Chart.Name }}
+              app.kubernetes.io/instance: {{ .Release.Name }}
       containers:
         - name: rule-engine
           image: "{{ .Values.image.repository }}:{{ .Chart.AppVersion }}"

deploy/helm/ai-spel-rule-engine/values.yaml

@@ -8,6 +8,12 @@ deployment:
   maxSurge: 1
   minReadySeconds: 5
   progressDeadlineSeconds: 600
+pod:
+  tolerations:
+    - key: workload-tier
+      operator: Equal
+      value: small
+      effect: NoSchedule
 service:
   port: 8080
 nats: