Exemple of how to use ingress-nginx

ingress-nginx-example.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-app
  labels:
    app: hello-app
spec:
  selector:
    matchLabels:
      app: hello-app
  replicas: 3
  template:
    metadata:
      labels:
        app: hello-app
    spec:
      containers:
      - name: hello-app
        image: hashicorp/http-echo
        args:
        - "-text=hello"
        ports:
        - containerPort: 5678
---
apiVersion: v1
kind: Service
metadata:
  name: hello-app-service
spec:
  selector:
    app: hello-app
  ports:
    - port: 8088
      targetPort: 5678
  type: ClusterIP
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: hello-ingress
  annotations:
    kubernetes.io/ingress.class: nginx
spec:
  rules:
  - host: localhost
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: hello-app-service
            port:
              number: 8088