Shell: Unterschied zwischen den Versionen

Aus Doc-Wiki
Zur Navigation springen Zur Suche springen
imported>Burghardt
imported>Burghardt
Zeile 34: Zeile 34:
 
* [[Kerberos]]/[[OpenAFS]] have separate/shorter timeouts. You need to <tt>kinit && aklog</tt> when you're approaching timeout
 
* [[Kerberos]]/[[OpenAFS]] have separate/shorter timeouts. You need to <tt>kinit && aklog</tt> when you're approaching timeout
   
  +
<!--
 
=== Availability ===
 
=== Availability ===
 
The goal - ''of course'' - is 24/7. Take a look at: http://shell.stud.informatik.uni-goettingen.de/ -- use <tt>ifi</tt>/<tt>ifi</tt> to login <small>("bots not welcome")</small>
 
The goal - ''of course'' - is 24/7. Take a look at: http://shell.stud.informatik.uni-goettingen.de/ -- use <tt>ifi</tt>/<tt>ifi</tt> to login <small>("bots not welcome")</small>
  +
--!
  +
   
 
== Self defense of the servers ==
 
== Self defense of the servers ==
Zeile 75: Zeile 78:
   
 
== Links ==
 
== Links ==
  +
* ...
  +
<!--
 
* https://help.ubuntu.com/ -- common help regarding Ubuntu
 
* https://help.ubuntu.com/ -- common help regarding Ubuntu
 
* http://shell.stud.informatik.uni-goettingen.de/ -- current state of the load balancer. Use <tt>ifi</tt>/<tt>ifi</tt> to login <small>''("bots not welcome")''</small>
 
* http://shell.stud.informatik.uni-goettingen.de/ -- current state of the load balancer. Use <tt>ifi</tt>/<tt>ifi</tt> to login <small>''("bots not welcome")''</small>
  +
-->
 
   
 
[[Category:Pool]][[Category:Remote]]
 
[[Category:Pool]][[Category:Remote]]

Version vom 1. Juni 2016, 12:56 Uhr

Diamond-caution.png Beta Test. Please give feedback. Diamond-caution.png


Usage

Simply use SSH to login to this machine:

ssh  user@shell.stud.informatik.uni-goettingen.de

Note that the intially presented banner contains something like

#######  shell.stud.informatik.uni-goettingen.de - login vm: shell5.cip.loc

...telling you the actual local name of the automatically chosen destination machine.


For Windows: use PuTTY (simple) or Cygwin (more complex and powerful) or any other SSH-implementation.


Target audience

These machines are meant to be used by students. But of course they can be used by any staff members! (For first time users: the only requirement is to logon one single time using one of the (physical) pool computers in our building - this will make you a "known user" to our systems.)

Load Balancing

This term is misleading on this specific installation: the default algorithm being used is simply "round-robin" - you'll get connected to the "next" machine one after another. If you landed on an overcrowded system simply disconnect/reconnect to use another machine.

Legacy login.stud

Both login.stud.informatik.uni-goettingen.de and login.informatik.uni-goettingen.de (for staff only) are not affected by this new approach. These "old" machines will continue to work unmodified.

Timeout

  • The session Timeout is set to 36 hours -- this is the HAproxy related Timeout regarding the TCP connection
  • Kerberos/OpenAFS have separate/shorter timeouts. You need to kinit && aklog when you're approaching timeout