How to open custom port in Kubernetes - kubernetes

Question

I deploy rabbit mq on cluster, so far running well on port 15672 : http://test.website.com/
but there need open some other ports (25672, 15672, 15674). I has defined in yaml like this :
apiVersion: v1
kind: Service
metadata:
name: rabbitmq
spec:
selector:
name: rabbitmq
ports:
- port: 80
name: http
targetPort: 15672
protocol: TCP
- port: 443
name: https
targetPort: 15672
protocol: TCP
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: rabbitmq
spec:
selector:
matchLabels:
app: rabbitmq
strategy:
type: RollingUpdate
template:
metadata:
name: rabbitmq
spec:
containers:
- name: rabbitmq
image: rabbitmq:latest
ports:
- containerPort: 15672
name: http
protocol: TCP
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: rabbitmq
spec:
hosts:
- “test.website.com”
gateways:
- gateway
http:
- match:
- uri:
prefix: /
route:
- destination:
port:
number: 80
host: rabbitmq
How do I setup in yaml file to open some other ports ?

Answer 1

Assuming that Istio Gateway is serving TCP network connections, you might be able to combine one Gateway configuration for two external ports.
Here is an example:
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: gateway
spec:
selector:
istio: ingressgateway # use istio default controller
servers:
- port:
number: 80
name: port1
protocol: TCP
hosts:
- example.myhost.com
- port:
number: 443
name: port2
protocol: TCP
hosts:
- example.myhost.com
Field hosts identifies here a list of target addresses that have to be exposed by this Gateway.
In order to make appropriate network routing to the nested Pods specify VirtualService with the matching set for the ports:
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: rabbitmq-virtual-service
spec:
hosts:
- example.myhost.com
gateways:
- gateway
tcp:
- match:
- port: 80
route:
- destination:
host: app.example.svc.cluster.local
port:
number: 15672
- match:
- port: 443
route:
- destination:
host: app.example.svc.cluster.local
port:
number: 15674
Above VirtualService defines the rules to route network traffic coming on 80 and 443 ports for test.website.com to the rabbitmq service ports 15672, 15674 respectively.
You can adjust these files to your needs to open some other ports.
Take a look: virtualservice-for-a-service-which-exposes-multiple-ports.