I am using the local Kubernetes cluster from Docker Desktop on Windows 10. No virtual machines, no minikubes.

I need to expose a port on my localhost for some service.

For example, I take kubernetes-bootcamp image from the official tutorial:

docker pull jocatalin/kubernetes-bootcamp:v2

Put it in the local registry:

docker tag jocatalin/kubernetes-bootcamp:v2 localhost:5000/kubernetes-bootcamp
docker push localhost:5000/kubernetes-bootcamp

Then create a deployment with this image:

kubectl create deployment kubernetes-bootcamp --image=localhost:5000/kubernetes-bootcamp

Then let's expose a port for accessing our deployment:

kubectl expose deployment/kubernetes-bootcamp --type="NodePort" --port 8080
kubectl get services
kubernetes-bootcamp   NodePort       10.102.167.98    <none>        8080:32645/TCP   8s

So we found out that the exposed port for our deployment is 32645. Let's try to request it:

curl localhost:32645
Failed to connect to localhost port 32645: Connection refused

And nothing is work.

But if I try port-forward everything is working:

kubectl port-forward deployment/kubernetes-bootcamp 7000:8080
Forwarding from 127.0.0.1:7000 -> 8080
Forwarding from [::1]:7000 -> 8080
Handling connection for 7000

Another console:

curl localhost:7000
Hello Kubernetes bootcamp! | Running on: kubernetes-bootcamp-7b5598d7b5-8qf9j | v=2

What am I doing wrong? I have found out several posts like mine, but none of them help me.