feat(multiplayer): wire allocator metrics discovery

deploy/k8s/base/allocator-service.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: allocator
+  namespace: cosmic-clash
+  labels:
+    app.kubernetes.io/name: allocator
+    app.kubernetes.io/component: allocator
+spec:
+  selector:
+    app.kubernetes.io/name: allocator
+  ports:
+    - name: metrics
+      port: 9091
+      targetPort: metrics

deploy/k8s/base/kustomization.yaml

@@ -7,6 +7,7 @@ resources:
   - network-policies.yaml
   - control-plane-deployment.yaml
   - control-plane-service.yaml
+  - allocator-service.yaml
   - fleet.yaml
   - fleet-autoscaler.yaml
   - game-server-pdb.yaml

deploy/observability/prometheus-allocator-service-monitor.yaml

@@ -0,0 +1,20 @@
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: cosmic-clash-allocator
+  namespace: cosmic-clash
+  labels:
+    app.kubernetes.io/name: cosmic-clash
+    app.kubernetes.io/component: observability
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: allocator
+  namespaceSelector:
+    matchNames:
+      - cosmic-clash
+  endpoints:
+    - port: metrics
+      path: /metrics
+      interval: 15s
+      scrapeTimeout: 5s