Accessing The System
Direct Access login_nodes
Direct access to the TGI RAILS login nodes is via ssh using your NCSA username, password and NCSA Duo MFA. Please see this page for links to NCSA Identity and NCSA Duo services. The login nodes provide access to the CPU and GPU resources on TGI RAILS.
login node hostname |
example usage with ssh |
railsl1.ncsa.illinois.edu |
11 forwarding from linux hosts ) |
railsl2.ncsa.illinois.edu |
name alt. syntax for user@host ) |
Preferred host: rails.ncsa.illinois.edu (round robin DNS name for the set of login nodes) |
ssh username@rails.ncsa.illinois.edu
|
Contact help+tgi@ncsa.illinois.edu for assistance if you do not know your NCSA username.
Use of ssh-key pairs is disabled for general use. Please contact NCSA Help at help+tgi@ncsa.illinois.edu for key-pair use by Gateway allocations.
maintaining persistent sessions: tmux
tmux is available on the login nodes to maintain persistent sessions. See the tmux man page for more information. Use the targeted login hostnames (railsl1 or railsl2) to attach to the login node where you started tmux after making note of the hostname. Avoid the round-robin hostname when using tmux.
ssh keyboard-interactive
For command line ssh clients, make sure to use the following settings if you have trouble logging in to TGI RAILS:
ssh -o PreferredAuthentications=keyboard-interactive,password
Compute Node External Connectivity
Compute nodes are able to contact the WAN directly but do not allow incoming connections.