Added resource limits and HPA

Renamed from query-service-deployment to simply query-service. Added
resource limits and requests to both deployment and integration pod.
Added horizontal pod autoscaler to scale up query service based on cpu
usage.

deployments/deployment.yml

 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: query-handler-deployment
+  name: query-handler
   labels:
-    app: query-handler 
+    app: query-service
 spec:
   replicas: 1 
   selector:
     matchLabels:
-      app: query-handler
+      app: query-service
   template:
     metadata:
       labels:
-        app: query-handler 
+        app: query-service 
     spec:
       containers:
-      - name: query-handler
+      - name: query-service
         image: datastropheregistry.azurecr.io/query-service:latest
         ports:
         - containerPort: 3000 
@@ -38,11 +38,12 @@ spec:
           value: redis.redis.svc.cluster.local:6379
         - name: LOG_MESSAGES
           value: "true"
-        - name: POD_NAME
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.name
-        - name: ARANGO_HOST
-          value: http://arangodb:8529
+        resources:
+            requests:
+              memory: "100Mi"
+              cpu: "100m"
+            limits:
+              memory: "250Mi"
+              cpu: "500m"
       imagePullSecrets:
       - name: docker-regcred
\ No newline at end of file

deployments/hpa.yml

+apiVersion: autoscaling/v2beta2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: query-service
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: query-service
+  minReplicas: 1
+  maxReplicas: 3
+  metrics:
+  - type: Resource
+    resource:
+      name: cpu
+      target:
+        type: Utilization
+        averageUtilization: 80
\ No newline at end of file

deployments/svc.yml

@@ -2,10 +2,10 @@
 kind: Service
 apiVersion: v1
 metadata:
-  name: query-handler-service
+  name: query-service
 spec:
   selector:
-    app: query-handler
+    app: query-service
   ports:
     - port: 3000
       targetPort: 3000
\ No newline at end of file

integration-testing/pod.yml

@@ -22,7 +22,12 @@ spec:
       value: redis:6379
     - name: LOG_MESSAGES
       value: "true"
-    - name: ARANGO_HOST
-      value: http://arangodb.default.svc.cluster.local:8529
+    resources:
+        requests:
+          memory: "50Mi"
+          cpu: "50m"
+        limits:
+          memory: "100Mi"
+          cpu: "100m"
   imagePullSecrets:
   - name: docker-regcred