Add tt console docs (#3994)

Resolves #3734
Resolves #3820

* Add tt console docs
* Add tt connect SSL options

doc/reference/tooling/tcm/index.rst

@@ -22,7 +22,7 @@ in an instance's console.
 executable for Linux platforms.
 
 |tcm| works only with Tarantool EE clusters that use centralized configuration in
-:ref:`etcd <configuration_etcd>` or a Tarantool-based storage.
+:ref:`etcd <configuration_etcd>` or a Tarantool-based configuration storage.
 When you create or edit a cluster's configuration in |tcm|, it publishes the saved
 configuration to the storage. This ensures consistent and reliable configuration storage.
 A single |tcm| installation can connect to multiple Tarantool EE clusters and

doc/reference/tooling/tcm/tcm_quick_start.rst

@@ -0,0 +1,34 @@
+..  _tcm_quick_start
+
+Quick start with TCM
+====================
+
+..  include:: index.rst
+    :start-after: ee_note_tcm_start
+    :end-before: ee_note_tcm_end
+
+This guide explain how to get |tcm_full_name| up and running on your local system.
+
+?? location: howto or TCM?
+
+Prerequisites
+-------------
+
+- Linux
+- macOS?
+- SDK archive (how to obtain)
+
+Setting up Tarantool EE
+-----------------------
+
+Preparing TCM environment
+-------------------------
+
+Starting TCM
+------------
+
+Logging in
+----------
+
+Adding a cluster ? do we need further steps?
+----------------

doc/reference/tooling/tt_cli/connect.rst

@@ -8,26 +8,56 @@ Connecting to a Tarantool instance
     $ tt connect {URI|INSTANCE} [OPTION ...]
 
 
-``tt connect`` connects to a Tarantool instance by its URI or name specified
-during its startup (``tt start``).
+``tt connect`` connects to a Tarantool instance by its URI or instance name specified
+in the current environment.
 
 Options
 -------
 
 ..  option:: -u USERNAME, --username USERNAME
 
-    Username
+    A Tarantool user for connecting to the instance.
 
 ..  option:: -p PASSWORD, --password PASSWORD
 
-    Password
+    The user's password.
 
 ..  option:: -f FILEPATH, --file FILEPATH
 
     Connect and evaluate the script from a file.
 
     ``-`` – read the script from stdin.
 
+.. option:: -i, --interactive
+
+    Enter the interactive mode after evaluating the script passed in ``-f``/``--file``.
+
+..  option:: -l LANGUAGE, --language LANGUAGE
+
+    The input language of the :ref:`tt interactive console <tt-interactive-console>`:
+    ``lua`` (default) or ``sql``.
+
+..  option:: -x FORMAT, --outputformat FORMAT
+
+    The output format of the :ref:`tt interactive console <tt-interactive-console>`:
+    ``yaml`` (default), ``lua``, ``table``, ``ttable``.
+
+..  option:: --sslcertfile FILEPATH
+
+    The path to an SSL certificate file for encrypted connections.
+
+..  option:: --sslkeyfile FILEPATH
+
+    The path to a private SSL key file for encrypted connections.
+
+..  option:: --sslcafile FILEPATH
+
+    The path to a trusted certificate authorities (CA) file for encrypted connections.
+
+..  option:: --sslciphers STRING
+
+    The list of SSL cipher suites used for encrypted connections, separated by colons (``:``).
+
 Details
 -------
 
@@ -38,14 +68,57 @@ You can also connect to instances in the same ``tt`` environment
 (that is, those that use the same :ref:`configuration file <tt-config_file>` and Tarantool installation)
 by their instance names.
 
-If authentication is required, specify the username and the password using the ``-u`` (``--username``)
-and ``-p`` (``--password``) options.
+Authentication
+~~~~~~~~~~~~~~
+
+When connecting to an instance by its URI, ``tt connect`` establishes a remote connection
+for which authentication is required. Use one of the following ways to pass the
+username and the password:
+
+*   The ``-u`` (``--username``) and ``-p`` (``--password``) options:
+
+..  code-block:: console
 
-By default, ``tt connect`` opens an interactive Tarantool console. Alternatively, you
-can open a connection to evaluate a Lua script from a file or stdin. To do this,
-pass the file path in the ``-f`` (``--file``) option or use ``-f -`` to take the script
-from stdin.
+    $ tt connect 192.168.10.10:3301 -u myuser -p p4$$w0rD
+
+*   The connection string:
+
+..  code-block:: console
+
+    $ tt connect myuser:[email protected]:3301 -u myuser -p p4$$w0rD
+
+*   Environment variables ``TT_CLI_USERNAME`` and ``TT_CLI_PASSWORD`` :
+
+..  code-block:: console
+
+    $ export TT_CLI_USERNAME=myuser
+    $ export TT_CLI_PASSWORD=p4$$w0rD
+    $ tt connect 192.168.10.10:3301
+
+If no credentials are provided for a remote connection, the user is automatically ``guest``.
+
+.. note::
+
+    Local connections (by instance name instead of the URI) don't require authentication.
+
+Encrypted connection
+~~~~~~~~~~~~~~~~~~~~
+
+To connect to instances that use SSL encryption, provide the SSL certificate and
+SSL key files in the ``--sslcertfile`` and ``--sslkeyfile`` options. If necessary,
+add other SSL parameters -- ``--sslcafile`` and ``--sslciphers``.
+
+Script evaluation
+~~~~~~~~~~~~~~~~~
+
+By default, ``tt connect`` opens an :ref:`interactive tt console <tt-interactive-console>`.
+Alternatively, you can open a connection to evaluate a Lua script from a file or stdin.
+To do this, pass the file path in the ``-f`` (``--file``) option or use ``-f -``
+to take the script from stdin.
+
+..  code-block:: console
 
+    $ tt connect app -f test.lua
 
 Examples
 --------

doc/reference/tooling/tt_cli/index.rst

@@ -27,6 +27,7 @@ concept explanation, and the ``tt`` command reference.
     global_options
     commands
     external_modules
+    tt_interactive_console
 
 ..  _tt-cli-environments: