I created an headless service:

apiVersion: v1
kind: Service
metadata:
  name: myapp-service-headless
spec:
  ports:
    - port: 80
  selector:
    app: myapp
  clusterIP: None

From Kubernets dashboard I can see its Internal endpoints:

myapp-service-headless:80 TCP
myapp-service-headless:0 TCP

In this application, I also set internal endpoint to:

http://myapp-service-headless

But from outside, how can I access its IP to connect API?

For example, my Kubernets' IP is 192.168.99.100, then connect to 192.168.99.100 is okay?

Now the service status from Kubernetes dashboard

Services

Service Details