How to make My First ingress work on baremetal NodeIP? - kubernetes

Question

I have pod:
apiVersion: apps/v1
kind: Deployment
metadata:
name: hello-app
namespace: dev
spec:
selector:
matchLabels:
app: hello
replicas: 3
template:
metadata:
labels:
app: hello
spec:
containers:
- name: hello
image: "gcr.io/google-samples/hello-app:2.0"
Make service:
---
apiVersion: v1
kind: Service
metadata:
name: hello-service
namespace: dev
labels:
app: hello
spec:
type: ClusterIP
selector:
app: hello
ports:
- port: 80
targetPort: 8080
protocol: TCP
Check it:
---
apiVersion: v1
kind: Service
metadata:
name: hello-node-service
namespace: dev
spec:
type: NodePort
selector:
app: hello
ports:
- port: 80
targetPort: 8080
$ kubectl get svc -n dev
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
hello-node-service NodePort 10.233.3.50 <none> 80:31263/TCP 9h
hello-service ClusterIP 10.233.45.159 <none> 80/TCP 44h
$ curl -I http://cluster.local:31263
HTTP/1.1 200 OK
Date: Sat, 11 Sep 2021 07:31:28 GMT
Content-Length: 66
Content-Type: text/plain; charset=utf-8
I have verified that the service is working.
Install ingress with NodeIP (https://kubernetes.github.io/ingress-nginx/deploy/):
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.0.0/deploy/static/provider/baremetal/deploy.yaml
$ kubectl get pods -n ingress-nginx -l app.kubernetes.io/name=ingress-nginx --watch
NAME READY STATUS RESTARTS AGE
ingress-nginx-admission-create-7gsft 0/1 Completed 0 10h
ingress-nginx-admission-patch-qj57b 0/1 Completed 1 10h
ingress-nginx-controller-8cf5559f8-mh6fr 1/1 Running 0 10h
$ kubectl get svc -n ingress-nginx
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
ingress-nginx-controller NodePort 10.233.52.118 <none> 80:30377/TCP,443:31682/TCP 10h
ingress-nginx-controller-admission ClusterIP 10.233.51.175 <none> 443/TCP 10h
Check it:
$ curl -I http://cluster.local:30377/healthz
HTTP/1.1 200 OK
Date: Sat, 11 Sep 2021 07:39:04 GMT
Content-Type: text/html
Content-Length: 0
Connection: keep-alive
Make ingress:
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-hello
namespace: dev
spec:
rules:
- host: cluster.local
http:
paths:
- backend:
service:
name: hello-service
port:
number: 80
path: "/hello"
pathType: Prefix
Check It:
$ curl -I http://cluster.local:30377/hello
HTTP/1.1 404 Not Found
Date: Sat, 11 Sep 2021 07:40:43 GMT
Content-Type: text/html
Content-Length: 146
Connection: keep-alive
It's doesn't work. I spend few days, tried add ExternalIP to ingress controller.
Can you please tell me who had the experience of setting up ingress, what am I doing wrong?
=(((
INFO about cluster:
$ kubectl get ingress -n dev
NAME CLASS HOSTS ADDRESS PORTS AGE
ingress-hello <none> cluster.local 80 10h
$ kubectl get nodes
NAME STATUS ROLES AGE VERSION
kuber-ingress-01 Ready worker 10d v1.21.3
kuber-master1 Ready control-plane,master 10d v1.21.3
kuber-master2 Ready control-plane,master 10d v1.21.3
kuber-master3 Ready control-plane,master 10d v1.21.3
kuber-node-01 Ready worker 10d v1.21.3
kuber-node-02 Ready worker 10d v1.21.3
kuber-node-03 Ready worker 10d v1.21.3
Inventory:
kuber-master1 10.0.57.31
kuber-master2 10.0.57.32
kuber-master3 10.0.57.33
kuber-node-01 10.0.57.34
kuber-node-02 10.0.57.35
kuber-node-03 10.0.57.36
kuber-ingress-01 10.0.57.30
$ ping cluster.local
PING cluster.local (10.0.57.30) 56(84) bytes of data.
64 bytes from ingress.example.com (10.0.57.30): icmp_seq=1 ttl=62 time=0.603 ms

Answer 1

The solution is to add the following content to the ingress - annotation.
Then the ingress controller starts to see the DNS addresses.
annotations:
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/ssl-redirect: "false"
nginx.ingress.kubernetes.io/use-regex: "true"
nginx.ingress.kubernetes.io/rewrite-target: /$1
Also, for convenience, changed path: / to a regular expression:
- path: /v1(/|$)(.*)