Adding mc version info for license add or update (#1111)

Per internal discussion, this adds some admonitions for mc license
commands and the SUBNET registration section of the troubleshooting
page. Also adds information about Client and Server version alignment.

source/operations/troubleshooting.rst

@@ -79,6 +79,13 @@ You can restart through the Console by selecting :guilabel:`Restart` in the top
 
       You can register for SUBNET from the command line.
 
+      .. important:: 
+      
+         ``mc license register`` requires :ref:`MinIO Client <minio-client>` version ``RELEASE.2023-11-20T16-30-59Z`` or later.
+         While not strictly required, best practice keeps the :ref:`MinIO Client version <mc-client-versioning>` in alignment with the MinIO Server version.
+        
+         If you are unable to upgrade the MinIO Client to the required or later version, register using the Console instead.
+
       Refer to :mc:`mc license register` for instructions.
 
       For clusters without direct Internet access, refer to the instructions in the :ref:`airgap example <minio-license-register-airgap>` of the :mc:`mc license register` documentation.

source/reference/minio-mc.rst

@@ -44,6 +44,20 @@ See :ref:`minio-mc-commands` for a list of supported commands.
    is the best option for applications which trigger AGPLv3 obligations where
    open-sourcing the application is not an option.   
 
+.. _mc-client-versioning:
+
+Version Alignment with MinIO Server
+-----------------------------------
+
+The MinIO Client releases separately from the MinIO Server.
+
+For best functionality and compatibility, use a MinIO Client version released closely to your MinIO Server version. 
+For example, a MinIO Client released the same day or later than your MinIO Server version.
+
+You can install a version of the MinIO Client that is more recent than the MinIO Server version. 
+However, if the MinIO Client version skews too far from the MinIO Server version, you may see increased warnings or errors as a result of the differences.
+For example, while core S3 APIs around copying (:mc:`mc cp`) may remain unchanged, some features or flags may only be available or stable if the client and server versions are aligned.
+
 .. _mc-install:
 
 Quickstart

source/reference/minio-mc/mc-license-register.rst

@@ -11,32 +11,12 @@
 .. mc:: mc support register
 .. mc:: mc license register
 
-Command History
----------------
-
-The command used to register a deployment with SUBNET has changed over time.
-
-.. list-table::
-   :header-rows: 1
-   :widths: 40 30 30
-   :width: 100%
-
-   * - MinIO Client Release
-     - Command
-     - Notes
-
-   * - RELEASE.2021-11-05T10-05-06Z
-     - ``mc admin subnet register``
-     - First available
-
-   * - RELEASE.2022-02-13T23-26-13Z 
-     - ``mc support register``
-     - Command moved to an ``mc support`` function
-
-   * - RELEASE.2022-07-15T09-20-55Z
-     - ``mc license register``
-     - Command moved to an ``mc license`` function
+.. important:: 
 
+   ``mc license register`` requires :ref:`MinIO Client <minio-client>` version ``RELEASE.2023-11-20T16-30-59Z`` or later.
+   While not strictly required, best practice keeps the :ref:`MinIO Client version <mc-client-versioning>` in alignment with the MinIO Server version.
+   
+   If for any reason you cannot upgrade your MinIO Client to the required version or later for the purpose of registering to SUBNET, register using the :ref:`MinIO Console <minio-docs-subnet>` instead.
 
 Description
 -----------

source/reference/minio-mc/mc-license-update.rst

@@ -10,6 +10,13 @@
 
 .. mc:: mc license update
 
+.. important:: 
+
+   ``mc license update`` requires :ref:`MinIO Client <minio-client>` version ``RELEASE.2023-11-20T16-30-59Z``.
+   While not strictly required, best practice keeps the :ref:`MinIO Client version <mc-client-versioning>` in alignment with the MinIO Server version.
+   
+   If for any reason you cannot upgrade your MinIO Client to the required version or later for the purpose of registering to SUBNET, register using the :ref:`MinIO Console <minio-docs-subnet>` instead.
+
 Description
 -----------