How to find the url of a service in kubernetes?

Question

I have a local kubernetes cluster on my local docker desktop.

This is how my kubernetes service looks like when I do a kubectl describe service

Name:              helloworldsvc Namespace:         test Labels:            app=helloworldsvc Annotations:       kubectl.kubernetes.io/last-applied-configuration:                      {"apiVersion":"v1","kind":"Service","metadata":{"annotations":{},"labels":{"app":"helloworldsvc"},"name":"helloworldsvc","namespace":"test... Selector:          app=helloworldapp Type:              ClusterIP IP:                10.108.182.240 Port:              http  9111/TCP TargetPort:        80/TCP Endpoints:         10.1.0.28:80 Session Affinity:  None Events:            <none> 

This service is pointing to a deployment with a web app.

My question how to I find the url for this service? I already tried http://localhost:9111/ and that did not work.

I verified that the pod that this service points to is up and running.

Answer 1

URL of service is in the below format:

<service-name>.<namespace>.svc.cluster.local:<service-port> 

In your case it is:

helloworldsvc.test.svc.cluster.local:9111 

Answer 2

Get the service name: kubectl get service -n test

URL to a kubernetes service is service-name.namespace.svc.cluster.local:service-port where cluster.local is the kubernetes cluster name.

To get the cluster name: kubectl config get-contexts | awk {'print $2'}

URL to service in your case will be helloworldsvc.test.svc.cluster.local:9111

The way you are trying to do won't work as to make it available on your localhost you need to make the service available at nodeport or using port-forward or using kubectl proxy.

However, if you want dont want a node port and to check if inside the container everything works fine then follow these steps to get inside the container if it has a shell.

kubectl exec -it container-name -n its-namespace-name sh

then do a

curl localhost:80 or curl helloworldsvc.test.svc.cluster.local:9111 or curl 10.1.0.28:80

but both curl commands will work only inside Kubernetes pod and not on your localhost machine.

To access on your host machine kubectl port-forward svc/helloworldsvc 80:9111 -n test