anchor.diff:  ====
   When accessing Hawkular Metrics via the API, you will only be able to perform
   reads. Writing metrics has been disabled by default. If you want for individual
  -users to also be able to write metrics, you will need to set the
  +users to also be able to write metrics, you must set the
   `*USER_WRITE_ACCESS*`
   xref:../install_config/cluster_metrics.adoc#deployer-template-parameters[deployer template parameter]
   to *true*.
  
positive.code: Hawkular Metrics is a multi-tenanted application. It is configured so that a
  project in {product-title} corresponds to a tenant in Hawkular Metrics.
  
  As such, when accessing metrics for a project named *MyProject* you will need
  to set the
  link:http://www.hawkular.org/docs/rest/rest-metrics.html#_tenant_header[*Hawkular-Tenant*]
  header to *MyProject*.
  
  There is also a special tenant named *_system* which contains system level
  metrics. This will require either a *cluster-reader* or *cluster-admin* level
  privileges to access.
  
  === Authorization
  
negative.code: |The persistent volume size for each of the Cassandra nodes.
  
  |`*CASSANDRA_NODES*`
  |The number of initial Cassandra nodes to deploy.
  
  |`*USE_PERSISTENT_STORAGE*`
  |Set to *true* for persistent storage; set to *false* to use non-persistent storage.
  