Difference: LoginServices (4 vs. 5)

Revision 52010-09-16 - AndrewPickford

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META TOPICPARENT name="WebHome"

Login Services

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login.physics.gla.ac.uk

Access to PPE machines from outside the PPE network is via login.physics.gla.ac.uk using your departmental unix account. Currently access to login.physics.gla.ac.uk is granted by request only, contact Faculty IT if you wish to use login.physics.gla.ac.uk.
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ppelx.physics.gla.ac.uk

Access to PPE machines from outside the PPE network is via ppelx.physics.gla.ac.uk using your ppe linux account. Currently access to ppelx.physics.gla.ac.uk from outside is granted by request only, contact the SystemAdministrators if you wish to use ppelx.physics.gla.ac.uk from outside.
 
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An ssh client is then required to access login.physics.gla.ac.uk (e.g PuTTY for Windows; and the ssh command on linux etc. desktops). PuTTY does not need to be administratively installed in Windows: you could write a copy onto a USB stick or a floppy disk, and take it with you in case the distant machine does not have it already.
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An ssh client is then required to access ppelx.physics.gla.ac.uk (e.g PuTTY for Windows; and the ssh command on linux etc. desktops). PuTTY does not need to be administratively installed in Windows: you could write a copy onto a USB stick or a floppy disk, and take it with you in case the distant machine does not have it already.
 
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If the only facility to which you have access at the distant host is a web browser (Java-capable), then the "MindTerm Applet" can be used by browsing to http://login.physics.gla.ac.uk/ - although this offers a viable interactive terminal window, it doesn't allow many of the other features of ssh to be utilised, such as X forwarding, so it is only mentioned as a fallback option.
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login.physics.gla.ac.uk

The deptartmental login server login.physics.gla.ac.uk is also vailable from outside using your departmental linux account (i.e. your email username and password). Currently access to login.physics.gla.ac.uk for is granted by request only, contact Faculty IT if you wish to use login.physics.gla.ac.uk.
  For forwarding X windows through login.physics.gla.ac.uk see ExtXWindows.
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PPELX

After logging into login.physics.gla.ac.uk ppe users can then ssh into any ppe desktop machine or into the ppelx group of machines. There are currently two groups of ppelx machines both running Scientific Linux 4, one group running in 32 bit mode the other in 64 bit mode:
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Other PPE Machines

After logging into ppelx.physics.gla.ac.uk or login.physics.gla.ac.uk ppe users can then ssh into any ppe desktop machine. Additionally a group of machines running 64 bit Scientific Linux 4 is also availble: ppelx64sl4.physics.gla.ac.uk
 
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  • ppelx.physics.gla.ac.uk - Scientific Linux 4, 32 bit
  • ppelx64sl4.physics.gla.ac.uk - Scientific Linux 4, 64 bit
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Avoiding the copying double hop

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As ppelx.physics.gla.ac.uk can now be accessed directly the information below on doing a direct file copy is now redundant. The orginal script and instructions are below incase they can help in other double hop situations.
 As the ppe linux machines are not directly accessible from outside copying files to the ppe systems from outside would seem to require first copying a file to login.physics.gla.ac.uk then logging into login.physics.gla.ac.uk to copy the file to the ppe systems. From a linux system this double hop can be avoided using by using a wrapper script to scp and some ssh configuration options.

First download the wrapper script: https://twiki.ppe.gla.ac.uk/pub/IT/LoginServices/rscp, and ensure the script is executable my doing chmod +x rscp after down load. Then add into your ~/.ssh/config file (on the remote none ppe system):

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  To use the script first ssh into login.physics.gla.ac.uk then in another window on the remote machine to (for example) copy files called f1 and f2 to your home directory on ppelx do, rscp file1 file2 ppelx:~/ on the remote machine or to recursively copy a directory called dir1to your home directory on ppelx use rscp -r dir1 ppelx:~/.
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lf1

lf1 runs Fermi Scientific LINUX 305 and is provided for local CDF collaborators only. Its configuration is very similar to that of a desktop, but unlike desktops it does not have any additional RPMs from outside its installation tree.

-- AndrewPickford - 03 Dec 2008

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-- AndrewPickford - 16 Sept 2010
 
META FILEATTACHMENT attachment="rscp" attr="" comment="scp wrapper script" date="1228319954" name="rscp" path="rscp" size="4156" stream="rscp" tmpFilename="/usr/tmp/CGItemp34122" user="AndrewPickford" version="1"
 
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