[[computing:cluster:pripojeni:|{{:up1.png?direct|}}]]
[[computing:cluster:pripojeni:|Connections]]


==== Connecting to the kraken server in Windows - from the ÚT network ====

The SSH client is not part of Windows and needs to be installed. The most commonly used client is PuTTY. 

The [[http://www.putty.org//|PuTTY]] is a client for SSH, Telnet, rlogin and bare TCP protocols. It is developed as open source software. The latest version can be downloaded [[http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html|here]].
The program consists of a single exe file, which you can place in e.g. the directory ''"c:\program files\putty"''.


If you are going to run programs with a graphical interface (MATLAB) on the server, it is necessary to have an X server installed. The recommended one is
[[http://vcxsrv.sourceforge.net/|VcXsrv Windows X Server]], which is available in both 32-bit and 64-bit versions. 

=== Configuring the program ===

  * 1. Run the ''putty'' program. In the <wrap round box>Host name (or IP address)</wrap> field, type <wrap hi>kraken</wrap>. \\ In the <wrap round box>Port</wrap> field, leave <wrap hi>22</wrap>.

{{:computing:cluster:putty2cn.png?direct|}}

~~SP~~

  * 2. Go to the program configuration, <wrap hi>Connection -> SSH -> X11</wrap> tab. Check the <wrap round box>Enable X11 forwarding</wrap> box.

{{:computing:cluster:navody:putty:putty1b.png?direct|}}

~~SP~~

  * 3. Return to the <wrap hi>Session</wrap> home tab and in the <wrap round box>Saved Sessions</wrap> field, type the name under which your session will be saved.
  * 4. Click the <wrap round box>Save</wrap> button to save the configuration.
  * 5. Use the <wrap round box>Open</wrap> button to start the connection.


{{:computing:cluster:putty3bn.png?direct|}}

~~SP~~

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If you want to use GUI programs on the server (e.g. MATLAB), you need to run VcXsrv X Server before connecting. In the programs menu, go to <wrap hi>VcXsr</wrap> and run the program <wrap hi>VcXsr</wrap>.

{{:computing:cluster:navody:putty:vcxsrv1b.png?direct&300|}}

If the X server is running, its icon will appear in the tray.

{{:computing:cluster:navody:putty:vcxsrv2b.png?direct|}}

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  * 6. The terminal window opens and the login process starts.
  * 7. <wrap em>If you are logging in for the first time</wrap>, a warning window appears. PuTTY does not "know" the remote server and asks if the server is trusted. Answer <wrap round box>Yes</wrap>.

{{:computing:cluster:navody:putty:putty4bn.png?direct|}}

~~SP~~

  * 8. A terminal window opens and the login process begins. You will be prompted for a username and password. If you have entered both correctly, you will be logged in.

{{:computing:cluster:navody:putty:putty5bn.png?direct|}}

~~SP~~

  * 9. <wrap em>If you are logging in for the first time</wrap>, you need to change your password. To change your password, use the <wrap hi>''passwd''</wrap> command. You must first enter your current password.

{{:computing:cluster:navody:putty:putty6bn.png?direct|}}

~~SP~~

  * 10. Then you enter the new password. If the password you choose is too simple, the server will not approve the password and will prompt you to choose a more complex password. 
  * 11. You ask for the new password again to check it.
  * 12. If you have successfully changed the password on the kraken-M1 node, it will be automatically copied to the remaining nodes (M2,M3,M4,M5,M6). You do not need to "manually" change the password on the other nodes.
  * 13. Do the same for the L cracks.



{{:computing:cluster:navody:putty:putty7bn.png?direct|}}