Issue #000 feat: labelling nodes, so that nginx runs on specific nodes

ansible/roles/stack-proxy/templates/stack-proxy.yml

@@ -3,11 +3,24 @@ version: '3.3'
 services:
   proxy:
     image: "{{hub_org}}/{{image_name}}:{{image_tag}}"
+    # This is a workaround for remote ip address is not visible nginx
     ports:
-      - "443:443"
-      - "80:80"
+      - mode: host
+        target: 80
+        published: 80
+        protocol: TCP
+      - mode: host
+        target: 443
+        published: 443
+        protocol: TCP
     deploy:
       replicas: {{ proxy_replicas }}
+      # Nginx should run on specific nodes,
+      # so that we can configure loabalancer backend pool
+      # Make sure that replicas should match the number of physical nodes 
+      # allocated for nginx
+      constraints: 
+        - "node.labels.nginx=1"
       resources:
         reservations:
           memory: "{{ proxy_reservation_memory }}"