********
Accounts
********

.. _requesting accounts:

Requesting accounts
===================
Before you use GSDC's TEM cluster, you should send an application form to TEM service manager by e-mail and 
get an user account to access the computing cluster (please see `APPENDIX : Application Form & Materials <https://tem-docs.readthedocs.io/en/latest/app.html#appendix-application-form-materials-newi>`_ section). 
If you already have valid user accounts, 
you can make a connection to UI (user interface) login servers to use various kind of cluster computing/storage resources and software environments (including data analysis tools, e.g., relion, cisTEM, CryoSPARC, etc.).

.. note::
    When you first connect to the login servers, you can connect using only your password (or initial password), but you MUST immediately receive OTP (One-Time-Password)s for two-factor authentication.
    After the sucessful login, at ssh terminal, please follow the OTP guide to enable it. :ref:`2fa`


Accessing GSDC TEM cluster
==========================

For Linux/Mac users
-------------------

.. code-block:: bash

  $> ssh -Y -o Port=<port> <userID>@tem-ui-el7.sdfarm.kr
  (<userID>@tem-ui-el7.sdfarm.kr) First Factor:
  (<userID>@tem-ui-el7.sdfarm.kr) Second Factor(optional):

or, 

.. code-block:: bash

  $> ssh -Y -o Port=<port> <userID>@tem-cs-el7.sdfarm.kr
  (<userID>@tem-cs-el7.sdfarm.kr) First Factor:
  (<userID>@tem-cs-el7.sdfarm.kr) Second Factor(optional):

-Y (or -X) options : enable trusted X11 (or untrusted X11) forwarding


For Windows users
-----------------

  * Using MobaXterm (https://mobaxterm.mobatek.net) :
    MobaXterm is an enhanced terminal for Windows with self-contained X11 server, tabbed SSH client, network tools and much more.

.. image:: images/mobaxterm_resized.JPG
    :scale: 50 %
    :align: center

..

  * Using Putty with Xwindows manager (e.g., Xming, Xmanager, etc.) (https://www.putty.org) :
    If you use putty terminal application, you must install a 3rd-party Xwindows manager in advance.

.. image:: images/putty-1_resized.JPG
    :scale: 60 %
    :align: center

.. image:: images/putty-2_resized.JPG
    :scale: 60 %
    :align: center