add prometheus

deployment.yaml

@@ -6,7 +6,7 @@ metadata:
     app: cart-actor
   name: cart-actor
 spec:
-  replicas: 3
+  replicas: 2
   selector:
     matchLabels:
       app: cart-actor
@@ -50,11 +50,23 @@ spec:
           env:
             - name: TZ
               value: "Europe/Stockholm"
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+            - name: NODE_NAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: spec.nodeName
 ---
 kind: Service
 apiVersion: v1
 metadata:
   name: cart-actor
+  annotations:
+    prometheus.io/port: "8080"
+    prometheus.io/scrape: "true"
+    prometheus.io/path: "/metrics"
 spec:
   selector:
     app: cart-actor
@@ -89,4 +101,16 @@ spec:
               service:
                 name: cart-actor
                 port:
-                  number: 8080
+                  number: 8080
+---
+apiVersion: autoscaling/v1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: cart-scaler
+spec:
+  scaleTargetRef:
+    kind: Deployment
+    name: cart-actor
+  minReplicas: 1
+  maxReplicas: 5
+  targetCPUUtilizationPercentage: 50