anchor.diff:  This prevents having to restart frontend pods in order to pick up new services,
   which creates a new IP for the service. This also removes the need to use
   environment variables, as pods can use the service DNS. Also, as the DNS does not change, you can reference database services as
  -"db.local" in config files. Wildcard lookups are also supported, as any lookups
  +`db.local` in config files. Wildcard lookups are also supported, as any lookups
   resolve to the service IP, and removes the need to create the backend service
   before any of the frontend pods, since the service name (and hence DNS) is
   established upfront.
  
positive.code: link:../core_objects/kubernetes_model.html#service[services], such as frontend
  and backend services for use with multiple pods, in order for the frontend pods
  to communicate with the backend services, environment variables are created for
  username, service-ip, etc. If the service is deleted and recreated, a new IP
  address can be assigned to the service, and requires the frontend pods to be
  recreated in order to pick up the updated values for the service IP environment
  variable. Additionally, the backend service has to be created before any of the
  frontend pods to ensure that the service IP is generated properly and that it
  can be provided to the frontend pods as an environment variable.
  
  For this reason, OpenShift has an built-in DNS so that the services can be
  reached by the service DNS as well as the service IP/port. OpenShift supports
  split DNS by running link:https://github.com/skynetservices/skydns[SkyDNS] on the master that answers DNS queries for
  services. The master listens to port 53 by default.
  
negative.code: 
  On a node host, each Docker container's nameserver has the master added to the
  front, and the default search domain for the container will be
  `._<pod_namespace>_.local`. The container will then direct any nameserver
  queries to the master before any other nameservers on the node, which is the
  default Docker behavior. The master will answer queries on the `.local` domain
  that have the following form:
  
  ----
  