'The cluster :ref:`nodes info <es-guide-reference-api-admin-cluster-nodes-stats>` API allows to retrieve one or more (or all) of
the cluster nodes information.'

def node_stats(self, nodes=None):

    parts = ['_cluster', 'nodes', 'stats']
    if nodes:
        parts = ['_cluster', 'nodes', ','.join(nodes), 'stats']
    path = make_path(*parts)
    return self.conn._send_request('GET', path)
