kubernetes: replace nginx deployment by ingress rules

kubernetes/ingress.yaml

 apiVersion: extensions/v1beta1
 kind: Ingress
 metadata:
-  name: nginx
+  name: demo
   labels:
     app.kubernetes.io/component: nginx
     app.kubernetes.io/part-of: villas-web
@@ -21,8 +21,20 @@ spec:
       paths:
       - path: /
         backend:
-          serviceName: nginx
-          servicePort: 80
+          serviceName: frontend
+          servicePort: 5000
+      - path: /api/
+        backend:
+          serviceName: backend
+          servicePort: 4000
+      - path: /public/
+        backend:
+          serviceName: backend
+          servicePort: 4000
+      - path: /ws/relay/
+        backend:
+          serviceName: relay
+          servicePort: 8888
       - path: /mongo-express/
         backend:
           serviceName: mongo-express
@@ -31,7 +43,30 @@ spec:
         backend:
           serviceName: broker
           servicePort: web-admin
-      - path: /mockup/
+---
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: demo-rewrite
+  labels:
+    app.kubernetes.io/component: nginx
+    app.kubernetes.io/part-of: villas-web
+  annotations:  
+    kubernetes.io/ingress.class: nginx
+    certmanager.k8s.io/cluster-issuer: letsencrypt-prod
+    eonerc.rwth-aachen.de/description: VILLASweb
+    eonerc.rwth-aachen.de/link: https://git.rwth-aachen.de/acs/public/villas/VILLASweb
+    nginx.ingress.kubernetes.io/rewrite-target: /$3
+spec:
+  tls:
+  - hosts:
+    - villas.k8s.fein-aachen.org
+    secretName: letsencrypt-prod-upload
+  rules:
+  - host: villas.k8s.fein-aachen.org
+    http:
+      paths:
+      - path: /(ws|mockup)(/|$)(.*)
         backend:
           serviceName: node
           servicePort: 80

kubernetes/nginx-deployment.yaml

-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  labels:
-    app.kubernetes.io/component: nginx
-    app.kubernetes.io/part-of: villas-web
-  name: nginx
-spec:
-  replicas: 3
-  selector:
-    matchLabels:
-      app.kubernetes.io/component: nginx
-      app.kubernetes.io/part-of: villas-web
-  template:
-    metadata:
-      labels:
-        app.kubernetes.io/component: nginx
-        app.kubernetes.io/part-of: villas-web
-    spec:
-      containers:
-      - image: nginx:1.17.4-alpine
-        name: nginx
-        ports:
-        - containerPort: 80
-        volumeMounts:
-        - mountPath: /etc/nginx/conf.d/
-          name: config
-        livenessProbe:
-          httpGet:
-            path: /
-            port: 80
-          initialDelaySeconds: 3
-          periodSeconds: 3
-      volumes:
-      - name: config
-        configMap:
-          name: nginx-config

kubernetes/nginx-service.yaml

-apiVersion: v1
-kind: Service
-metadata:
-  labels:
-    app.kubernetes.io/component: nginx
-  name: nginx
-spec:
-  ports:
-  - name: "http"
-    port: 80
-  selector:
-    app.kubernetes.io/component: nginx