anchor.diff:  }
   --------------------------------------------------
   
  -In contrast to the `tribe` feature cross cluster search can also search indices with the same name on different clusters:
  -
  +In contrast to the `tribe` feature cross cluster search can also search indices with the same name on different
  +clusters:
   
   [source,js]
   --------------------------------------------------
  
positive.code: 
  Remote clusters can either be configured as part of the `elasticsearch.yml` file or be dynamically updated via
  the <<cluster settings API, cluster-update-settings>>. If a remote cluster is configured via `elasticsearch.yml` only
  the nodes with the configuration set will be connecting to the remote cluster. Remote clusters set via the
  <<cluster settings API, cluster-update-settings>> will be available on every node in the cluster.
  
  The `elasticsearch.yml` config file for a _cross cluster search_ node just needs to list the
  
negative.code: === Cross cluster search settings
  
  * `search.remote.connections_per_cluster` - the number of nodes to connect to per remote cluster. The default is `3`
  * `search.remote.initial_connect_timeout` - the time to wait for remote connections to be established when the node
  starts. The default is `30s`.
  * `search.remote.node_attribute` - a node attribute to filter out nodes that are eligible as a gateway node in the
  remote cluster. For instance a node can have a node attribute `node.attr.gateway: true`  such that only nodes with this
   attribute will be connected to if `search.remote.node_attribute` is set to `gateway`
  
  