title: Kubernetes VIP address clarifications
body: <p>I'm a bit confused by some of the Kubernetes documentation on virtual IPs: <a href="https://kubernetes.io/docs/concepts/services-networking/service/#the-gory-details-of-virtual-ips" rel="nofollow noreferrer">https://kubernetes.io/docs/concepts/services-networking/service/#the-gory-details-of-virtual-ips</a>.</p>
  
  <blockquote>
    <p>Userspace
    As an example, consider the image processing application described above. > When the backend Service is created, the Kubernetes master assigns a virtual IP address, for example 10.0.0.1.</p>
  </blockquote>
  
  <p>The Kubernetes master assigns that VIP address to what? Where is the VIP address assigned?</p>
  
  <p>How does the virtual IPs of a service integrate with an external ip address?</p>
  
  <blockquote>
    <p>In order to allow users to choose a port number for their Services, we must ensure that no two Services can collide</p>
  </blockquote>
  
  <p>Does this mean that when running <code>kubectl get services</code> I could see services having the same port?</p>
  
  <blockquote>
    <p>When clients connect to the VIP, their traffic is automatically transported to an appropriate endpoint</p>
  </blockquote>
  
  <p>Who are the clients? Other services within the cluster or some joe smo who's just using your app and knows nothing about kubernetes.</p>