anchor.diff:  document before indexing. With a heavy ingest load, it makes sense to use
   dedicated ingest nodes and to not include the `ingest` role from nodes that have
   the `master` or `data` roles.
  +
  +<<remote-node,Remote-eligible node>>::
  +
  +A node that has the `remote_cluster_client` role (default), which makes it
  +eligible to act as a remote client. By default, any node in the cluster can act
  +as a cross-cluster client and connect to remote clusters.
   
   <<ml-node,Machine learning node>>::
   
  
positive.code: To create a dedicated ingest node, set:
  
  [source,yaml]
  -------------------
  node.roles: [ ingest ]
  -------------------
  
  [[node-ingest-node-setting]]
  // tag::node-ingest-tag[]
  `node.ingest` {ess-icon}::
  Determines whether a node is an ingest node. <<ingest,Ingest nodes>> can apply 
  an ingest pipeline to transform and enrich a document before indexing. Default: 
  `true`.
  // end::node-ingest-tag[]
  
  
negative.code: file an absolute path or a path relative to `$ES_HOME` as follows:
  
  [source,yaml]
  ----
  path.data:  /var/elasticsearch/data
  ----
  
  Like all node settings, it can also be specified on the command line as:
  
  [source,sh]
  ----
  ./bin/elasticsearch -Epath.data=/var/elasticsearch/data
  ----
  
  TIP: When using the `.zip` or `.tar.gz` distributions, the `path.data` setting
  should be configured to locate the data directory outside the {es} home
  