anchor.diff:  exposes metrics that can be collected and stored in back-ends by
   link:https://github.com/GoogleCloudPlatform/heapster[Heapster].
   
  -As an OpenShift administrator, you can view a cluster's metrics from all
  +As an {product-title} administrator, you can view a cluster's metrics from all
   containers and components in one user interface.  These metrics are also
   used by link:../dev_guide/pod_autoscaling.html[horizontal pod autoscalers]
   in order to determine when and how to scale.
   
   This topic describes using
  -link:https://github.com/hawkular/hawkular-metrics[Hawkular Metrics]
  -as a metrics engine which stores the data persistently in a
  -link:http://cassandra.apache.org/[Cassandra] database. When this is
  -configured, CPU and memory-based metrics are viewable from the OpenShift
  -web console and are available for use by
  -link:../dev_guide/pod_autoscaling.html[horizontal pod autoscalers].
  +link:https://github.com/hawkular/hawkular-metrics[Hawkular Metrics] as a metrics
  +engine which stores the data persistently in a
  +link:http://cassandra.apache.org/[Cassandra] database. When this is configured,
  +CPU and memory-based metrics are viewable from the {product-title} web console
  +and are available for use by link:../dev_guide/pod_autoscaling.html[horizontal
  +pod autoscalers].
   
   Heapster retrieves a list of all nodes from the master server, then contacts
   each node individually through the `/stats` endpoint. From there, Heapster
  
positive.code: ifdef::openshift-origin[]
  [WARNING]
  ====
  If your OpenShift installation was originally performed on a version previous to
  v1.0.8, even if it has since been updated to a newer version, you will need to
  follow the instructions for node certificates outlined in
  link:../install_config/upgrading/manual_upgrades.html#manual-updating-master-and-node-certificates[Updating
  Master and Node Certificates]. If the node certificate does not contain the IP
  address of the node, then Heapster will fail to retrieve any metrics.
  
negative.code: [NOTE]
  ====
  Depending on your installation method, the template may not be present in your
  {product-title} installation. If so, the template can be found at the following GitHub
  location:
  
  https://github.com/openshift/openshift-ansible/blob/master/roles/openshift_examples/files/examples/v1.1/infrastructure-templates/origin/metrics-deployer.yaml
  