SSH: se connecter au Centre de Calcul

Last modified: Jul 19, 2010 by Loikkanen

SSH: to connect to Computing Centre

1. Environments
2. SSH access
    2.1. Description
    2.2. Examples
         2.2.1. To connect
         2.2.2. To execute a remote command
         2.2.3. To copy files
         2.2.4. To transfer files
    2.3. Documentation

1. Environments

The IN2P3 and IRFU Computing Centre provides a working environment under Unix. It is Scientific Linux for LINUX. Groups of computers of each environment are build to satisfy your needs and to access all the resources available at the Computing Centre. These computers are strictly affected to the interactive work (mail, edition, compilation, software development, ...). The heavy computations should be made on the batch system.

Platform name	Operating system	Hardware architecture	Symbolic AFS name	Status
ccali.in2p3.fr	Scientific Linux 5 64 bit, 32 bit compatible	Intel/AMD	amd64_sl5	current
ccalisl4.in2p3.fr	Scientific Linux 4 64 bit, 32 bit compatible	Intel/AMD	amd64_sl4	old
ccalisl432.in2p3.fr	Scientific Linux 4 32 bit	Intel/AMD	ia32_sl4	obsolete

With an account at Computing Centre, you are able to access all these interactive platforms.

For more informations about computing farm see Informations about batch system (BQS) computers at IN2P3 Computing Centre

2. SSH access

2.1. Description

You can only use SSH to connect or to transfer files from or to the interactive computers of the Computer Centre. If you don't have a SSH client installed on your computer, please, take contact with your IT team. The user support team at Computing Centre can also provides you all the informations you need, please submit a ticket.

BE CAREFUL: only access with password is activated on the interactive computers of the Computing Centre. For technical reasons due to our environment, it is not possible to use an RSA/DSA type authentication.

2.2. Examples

In next examples, "user" corresponds to the account you have on the Computing Centre and "myfile" to the file you want to transfer.

2.2.1. To connect

> slogin -l user ccali.in2p3.fr
> ssh user@ccali.in2p3.fr

2.2.2. To execute a remote command

> ssh user@ccali.in2p3.fr remote_command

2.2.3. To copy files

> scp myfile user@ccali.in2p3.fr:/scratch/myfile

2.2.4. To transfer files

> sftp user@ccali.in2p3.fr

You can use "sftp" command only with client supporting version 2 of SSH protocol.

2.3. Documentation

For having complete informations about SSH, you can have a look on the man pages man ssh or on the next web link:
http://www.openssh.org