Classroom and Lab Computing

ITS Linux Computing

Remote Access Cluster

 

We have installed several servers that are for the access of students that use the ITS Linux Labs.  The following is a description of the hardware:

Each server has the following hardware:

These servers run the same software that is installed on the Linux lab computers.  In order to access these servers, ssh to lxcluster.tlt.psu.edu and use your Penn State access id just as you do in the labs.  If you need an ssh client and have a Penn State access id, you can download one for Windows or Macintosh from http://downloads.its.psu.edu/.

 For help connecting to the cluster, please visit this page for instructions on connecting to the cluster for command line access and graphical applications.  

Issues executing files: Since the migration to the new PASS space in the summer of 2008, setting permissions via "chmod" is not available, which directly effects making scripts executable. To set the execute bit thus making scripts executable follow the steps below. Also, here is a short movie version of the below steps: PASS Permissions.

  1. In a browser navigate to https://explorer.pass.psu.edu/explorer.cgi . Note, this will require you to authenticate via Web Access.
  2. Click on New Folder
  3. Enter a new folder name. We recommend using bin for the name.
  4. Select the new folder (note you may need to click on "^-- Up One Folder") and click on Info
  5. Click on: Go to permissions
  6. In the "Choose Permission Type" box click on Next.
  7. Click on the radio button for "Give Full Control" and click on Next
  8. Click on Next without selecting either of the two radio buttons in the "Select User or Group Assignment" box.
  9. Click on Extra Permissions in the "Permissions summary for:" box
  10. Select "Allow program files to be executed" and "Apply settings to all files and subfolders inside the (your path to the folder you created above)". This is important as any file you place in this directory will automatically inherit these permissions.
  11. Click on Confirm Change.
  12. Note that you will now see a box indicating "Success. All files in this folder and subfolders will be executable." This box is above the "Permissions summary for:" box.
  13. Watch the movie on PASS Permissions for an example of these steps. NOTE: the very last section, step 12, is displayed differently in the movie. No worries, the result is the same.