Kubectl Ingress without IP - ingress-nginx

Question

I have developed a very small service on dotnet 6, running in Windows 10 and Docker 20.10.17. I want to expose as service in Kubernetes in local machine as "http://localhost:15001/Calculator/sum/1/1".
I am running an script like:
docker build -f API/CalculadoraREST/Dockerfile . --tag calculadorarestapi:v1.0
kubectl config set-context --current --namespace=calculadora
kubectl apply -f kubernetes/namespace.yml --overwrite=true
kubectl apply -f kubernetes --overwrite=true
When finished and run kubectl get ingress -n calculadora I get the ingress object and found without IP to access:
NAME CLASS HOSTS ADDRESS PORTS AGE
calculadora-ingress <none> * 80 5s
Dockerfile:
FROM mcr.microsoft.com/dotnet/aspnet:6.0-focal AS base
WORKDIR /app
EXPOSE 15001
ENV ASPNETCORE_URLS=http://+:15001
# Creates a non-root user with an explicit UID and adds permission to access the /app folder
# For more info, please refer to https://aka.ms/vscode-docker-dotnet-configure-containers
RUN adduser -u 5678 --disabled-password --gecos "" appuser && chown -R appuser /app
USER appuser
FROM mcr.microsoft.com/dotnet/sdk:6.0-focal AS build
WORKDIR /src
COPY ["API/CalculadoraREST/CalculadoraRestAPI.csproj", "API/CalculadoraREST/"]
RUN dotnet restore "API/CalculadoraREST/CalculadoraRestAPI.csproj"
COPY . .
WORKDIR "/src/API/CalculadoraREST"
RUN dotnet build "CalculadoraRestAPI.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "CalculadoraRestAPI.csproj" -c Release -o /app/publish /p:UseAppHost=false
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "CalculadoraRestAPI.dll"]
Ingress:
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: calculadora-ingress
namespace: calculadora
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /
spec:
rules:
- http:
paths:
- path: /Calculator/
pathType: Prefix
backend:
service :
name: calculadorarestapi-service
port:
number: 15001
Service:
apiVersion: v1
kind: Service
metadata:
name: calculadorarestapi-service
namespace: calculadora
spec:
selector:
app: calculadorarestapi
ports:
- protocol: TCP
port: 15001
targetPort: 15001
name: http
Deployment:
apiVersion: apps/v1
kind: Deployment
metadata:
name: calculadorarestapi-deployment
namespace: calculadora
spec:
selector:
matchLabels:
app: calculadorarestapi
replicas: 2
template:
metadata:
labels:
app: calculadorarestapi
spec:
containers:
- name: calculadorarestapi
image: calculadorarestapi:v1.0
ports:
- containerPort: 15001
resources:
requests:
memory: "150Mi"
cpu: "100m"
limits:
memory: "512Mi"
cpu: "500m"
imagePullSecrets:
- name: regsecret
Any ideas? I will really appreciate your comments. :-)

Answer 1

Could you add the kubernetes.io/ingress.class: "nginx" annotation to the Ingress resource or set the class field as per this Git link.