docs: def node_info(nodes=None, flat_settings=False, hosts=None, profile=None):
      '''
      .. versionadded:: 2017.7.0
  
      Return Elasticsearch node information.
  
      nodes
          List of cluster nodes (id or name) to display stats for. Use _local for connected node, empty for all
      flat_settings
          Flatten settings keys
  
      CLI example::
  
          salt myminion elasticsearch.node_info flat_settings=True
      '''
      es = _get_instance(hosts, profile)
  
      try:
          return es.nodes.info(node_id=nodes, flat_settings=flat_settings)
      except elasticsearch.TransportError as e:
          raise CommandExecutionError("Cannot retrieve node information, server returned code {0} with message {1}".format(e.status_code, e.error))