How can I generate External IP when creating an ingress that uses nginx controller in kubernetes - kubernetes

Question

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: helloworld-rules
spec:
rules:
- host: helloworld-v1.example.com
http:
paths:
- path: /
backend:
serviceName: helloworld-v1
servicePort: 80
- host: helloworld-v2.example.com
http:
paths:
- path: /
backend:
serviceName: helloworld-v2
servicePort: 80
I'm making kubernetes cluster and I will apply that cloudPlatform Isolated(not aws or google).
When creating an ingress for service I can choose host url but that is not exist anywhere(that address is not registrated something like DNS server) So I can't access that url. Visiting this IP just gives a 404.
how can I get or configure URL that can access external browser
:(...

Answer 1

It depends on how you configure your nginx controller.
You should have a Service configured which is the entry point when accessing from outside see the docs https://kubernetes.io/docs/concepts/services-networking/ingress/#what-is-ingress.
So basically you have a Service that points to the ingress controller and this will redirect the traffic to your pods based on Ingress Objects.
Ingress -> Services -> Pods
Since you don't run on aws or google You would have to use externalIp or NodePort and configure the service accordingly
kind: Service
apiVersion: v1
metadata:
name: ingress-nginx
namespace: ingress-nginx
labels:
app: ingress-nginx
spec:
selector:
app: ingress-nginx
ports:
- name: http
port: 80
targetPort: http
- name: https
port: 443
targetPort: http
externalIPs:
- 80.11.12.10
And DNS needs to be managed with whatever you have for your domains in order to resolve, or for locally testing you can just edit your /etc/hostnames
Basically in AWS or Google you just create a service with type: LoadBalancer and point your dns records to the balancer address (CNAME for aws and the IP for google)