Websockets Demo (Istio v0.7.1 / Istio Nightly Build)

tornado.yaml

apiVersion: v1
kind: Service
metadata:
  name: tornado
  labels:
    app: tornado
spec:
  ports:
  - port: 8888
    name: http
  selector:
    app: tornado
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: tornado
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: tornado
        version: v1
    spec:
      containers:
      - name: tornado
        image: hiroakis/tornado-websocket-example
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 8888
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: tornado-gateway
  annotations:
    kubernetes.io/ingress.class: "istio"
spec:
  rules:
  - http:
      paths:
      - path: /.*
        backend:
          serviceName: tornado
          servicePort: 8888

tornado_rule.yaml

apiVersion: config.istio.io/v1alpha2
kind: RouteRule
metadata:
  name: tornado-websocket
spec:
  destination:
    name: tornado
  match:
    request:
      headers:
        uri:
          prefix: /
  websocketUpgrade: true

tornado_rule_v3.yaml

apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: tornado-gateway
spec:
  selector:
    istio: ingressgateway
  servers:
  - port:
      number: 80
      name: http
      protocol: HTTP
    hosts:
    - "*"
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: tornado
spec:
  hosts:
  - "*"
  gateways:
  - tornado-gateway
  http:
  - match:
    - uri:
        prefix: /
    route:
    - destination:
        host: tornado
      weight: 100
    websocketUpgrade: true

Ah, when I delete the istio-ingressgateway via the gui it restarts itself and then it works again.