DOCSP-24323: directShardOperations req for mongostat (#190)

* DOCSP-24323 directShardOperations req for mongostat

Author: kennethdyer

source/mongostat/mongostat-behavior.txt

@@ -39,14 +39,21 @@ with the :option:`--auth <mongod.--auth>` option, specify the
 <mongostat --password>` options, and the connecting user must have the
 :authaction:`serverStatus` privilege action on the cluster resources.
 
-The built-in role :authrole:`clusterMonitor` provides this privilege as
-well as other privileges. To create a role with just the privilege to
-run ``mongostat``, see :ref:`create-role-for-mongostat`.
+.. important::
+
+   Starting in MongoDB 8.0, to use ``mongostat`` to connect to a
+   sharded cluster, the user must also have the
+   :authrole:`directShardOperations` role.
+
+The built-in role :authrole:`clusterMonitor` provides the
+:authaction:`serverStatus` privilege as well as other
+privileges. To create a role with just the privilege to run
+``mongostat``, see :ref:`create-role-for-mongostat`.
 
 
 Learn More
 ----------
 
 - :ref:`mongostat`
 - :ref:`mongostat-compatibility-and-installation`
-- :ref:`mongostat-examples`
+- :ref:`mongostat-examples`