feat(k8s): add a horizontal pod autoscaler

.github/workflows/reusable-push-and-deploy.yml

@@ -118,6 +118,7 @@ jobs:
 
         run: |
           cat deployments/templates/deployment.yml | envsubst > deployments/deployment.yml
+          cat deployments/templates/hpa.yml | envsubst > deployments/hpa.yml
           cat deployments/templates/ingress.yml | envsubst > deployments/ingress.yml
           cat deployments/templates/service.yml | envsubst > deployments/service.yml
           cat deployments/templates/secrets.yml | envsubst > deployments/secrets.yml

deployments/templates/deployment.yml

@@ -5,7 +5,6 @@ metadata:
   labels:
     app: find-moj-data
 spec:
-  replicas: 2
   strategy:
     type: RollingUpdate
     rollingUpdate:
@@ -22,6 +21,13 @@ spec:
       containers:
         - name: find-moj-data
           image: ${IMAGE_PATH}
+          resources:
+            requests:
+              cpu: 20m
+              memory: 300Mi
+            limits:
+              cpu: 1000m
+              memory: 1000Mi
           ports:
             - name: http
               containerPort: 8000

deployments/templates/hpa.yml

@@ -0,0 +1,19 @@
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: find-moj-data
+  namespace: ${NAMESPACE}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: find-moj-data-deployment
+  minReplicas: 1
+  maxReplicas: 5
+  metrics:
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: 95