Unix

Short description: 
Connecting to PP Interactive Servers

The only methods to connect to the interactive servers are via either SSH or Remote Desktop Protocol. For security reasons, users cannot connect directly to these services, but must connect via a bastion or proxy service.

Connecting to the Interactive Servers via SSH

From Windows 10 OS

PuTTY is the preferred option – available from “Physics Self Service” on department-managed systems.​

Categories: Linux | PP | Particle | Unix | ppunix

Short description: 
How to manage files and directories in data areas

Introduction/Scope

This page documents how to tidy up files and directories in data areas. The documentation contains specifics for LHCb and ATLAS data areas, but some of the info is useful for other data areas and home directories.

NOTE: Data areas are not backed up!!

Categories: Linux | PP | Particle | Unix | ppunix

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Atomic and Laser Linux Compute Cluster

For support, please email 'itsupport@physics.ox.ac.uk' which will create a ticket and will be seen by the whole team.

Categories: Unix

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How to access files on the physics shared storage systems from outside the department

When outside Physics you can access any of the files in your home directory using SFTP/SCP.

The SFTP protocol provides similar functionality to FTP but is secure as information is encrypted. SCP is a secure copy protocol and has a command line syntax similar to `copy` commands. The services are accessed via the Windows front end server (winssh1) e.g. from a command line prompt on Linux (or any other OS with command line clients)

Categories: H drive | Linux | Remote Access | Unix | home directories

PBS batch system is no longer supported, please use HTCondor Batch System

Categories: Linux | PP | Particle | Unix | ppunix

Short description: 
The current strategy in Particle Physics is to use commodity priced systems running Microsoft Windows for the desktop. These provide all the usual applications, MS Office, Email, etc and access to Particle Physics Unix servers via X Windows (Exceed)

The general purpose Linux login servers are pplxint12 and pplxint13, running Enterprise Linux 9 (EL9) operating system.

These interactive servers gives access to a HTcondor batch system running several EL9 worker nodes. All machines remain switched on except for during minimal maintenance periods.

In case of software or hardware problems, the system may have to be taken down at short notice. Any problems should be directed to itsupportATphysics.ox.ac.uk

Categories: Linux | PP | Particle | Unix | ppunix

Short description: 
Remote access to the ppunix cluster

Direct logins using X are a problem because it's unencrypted; that means that your username and password go over the network visible to anyone bothered enough to look for them. The following set up avoids direct log-ins and demonstrates the set up of key based (passwordless) authentication.

SSH access through puTTY

The departmental Windows machines allow you to use PuTTY to connect to any of the interactive machines and use the command line. See the instructions in the "Using PuTTY from Windows" section.

Categories: Linux | PP | Particle | Unix | ppunix

Short description: 
Best Practice for Using Particle Physics Interactive Nodes

Logging in

It is assumed that you have your Windows machine set up as-per these instructions.

Categories: Linux | PP | Particle | Unix

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Go-to page for PPUnix queries

For support email the itsupport team which will create a ticket and be seen by all the team.

Categories: Linux | PP | Particle | Unix | ppunix

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Graphical display from Linux to Windows - Configuring Exceed to run as an Xserver on a windows machine

Click on start->All Programs ->Open Text Exceed 14 x64->Exceed Tools->Xconfig

exceed1_png_15983.png

Select 'Security' and check the No Host Access box.

Categories: Linux | Particle | Unix | X | graphics | pplxint5 | pplxint6