title: Kubernetes - communication between services
body: <p>I'm currently working on a kubernetes cluster. Cluster is working properly.
  I need to establish communication between services without using proxy.
  For example I have services below:</p>
  
  <ol>
  <li>worker</li>
  <li>app1</li>
  <li>app2</li>
  <li>app3</li>
  </ol>
  
  <p>Worker needs to login to app containers directly via SSH and do some commands.
  In docker-compose file it was easy by using links and then ssh app1, ssh app2.
  How to do it in Kubernetes ?</p>