NGINX Ingress 404 not found using docker desktop on windows (not minikube) - windows

Question

I am trying to make this basic example work on docker desktop on windows, I am not using minikube.
I managed to reach the service using NodePort with:
http://localhost:31429
But when I try http://hello-world.info (made sure to add it in hosts) - 404 not found.
kubectl get svc --all-namespaces
NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
default kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 20m
default web NodePort 10.111.220.81 <none> 8080:31429/TCP 6m47s
ingress-nginx ingress-nginx-controller LoadBalancer 10.107.29.182 localhost 80:30266/TCP,443:32426/TCP 19m
ingress-nginx ingress-nginx-controller-admission ClusterIP 10.101.138.244 <none> 443/TCP 19m
kube-system kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP,9153/TCP 20m
kubectl get ingress
NAME CLASS HOSTS ADDRESS PORTS AGE
example-ingress <none> hello-world.info 80 21m
I am lost, can someone please help ?
I also noticed that ADDRESS is empty.
Many thanks.

Answer 1

Reproduced this case on Docker Desktop 4.1.1, Windows 10 Pro
Install Ingress Controller for Docker Desktop:
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.0.4/deploy/static/provider/cloud/deploy.yaml
As I understand it, #dev1334 used an example from Set up Ingress on Minikube with the NGINX Ingress Controller article. I also tried it with some modifications to the original example.
In the example for the example-ingress.yaml file in the spec.rules section, the host hello-world.info is specified. Since Docker Desktop for Windows adds to a hosts file in C:\Windows\System32\drivers\etc\hosts during installation the following entry: 127.0.0.1 kubernetes.docker.internal I changed the host in the example-ingress.yaml from hello-world.info to kubernetes.docker.internal
But Ingress still didn't work as expected due to the following error:
"Ignoring ingress because of error while validating ingress class" ingress="default/example-ingress" error="ingress does not contain a valid IngressClass"
I added this line kubernetes.io/ingress.class: "nginx" to the annotations section in example-ingress.yaml
So, the final version of the example-ingress.yaml file is below.
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: example-ingress
annotations:
kubernetes.io/ingress.class: "nginx"
nginx.ingress.kubernetes.io/rewrite-target: /$1
spec:
rules:
- host: kubernetes.docker.internal
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: web
port:
number: 8080
- path: /v2
pathType: Prefix
backend:
service:
name: web2
port:
number: 8080
Test results
C:\Users\Andrew_Skorkin>kubectl get po -A
NAMESPACE NAME READY STATUS RESTARTS AGE
default web-79d88c97d6-c8xnf 1/1 Running 0 112m
default web2-5d47994f45-cxtzm 1/1 Running 0 94m
ingress-nginx ingress-nginx-admission-create-sjdcq 0/1 Completed 0 114m
ingress-nginx ingress-nginx-admission-patch-wccc9 0/1 Completed 1 114m
ingress-nginx ingress-nginx-controller-5c8d66c76d-jb4w9 1/1 Running 0 114m
...
C:\Users\Andrew_Skorkin>kubectl get svc -A
NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
default kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 7d15h
default web NodePort 10.101.43.157 <none> 8080:32651/TCP 114m
default web2 NodePort 10.100.4.84 <none> 8080:30081/TCP 96m
ingress-nginx ingress-nginx-controller LoadBalancer 10.106.138.217 localhost 80:30287/TCP,443:32664/TCP 116m
ingress-nginx ingress-nginx-controller-admission ClusterIP 10.111.208.242 <none> 443/TCP 116m
kube-system kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP,9153/TCP 7d15h
C:\Users\Andrew_Skorkin>curl kubernetes.docker.internal
Hello, world!
Version: 1.0.0
Hostname: web-79d88c97d6-c8xnf
C:\Users\Andrew_Skorkin>curl kubernetes.docker.internal/v2
Hello, world!
Version: 2.0.0
Hostname: web2-5d47994f45-cxtzm