Local System Information
This page offers pointers to detail of how to use lab systems, how to get help, and so on.
Getting help and introductory documents
- Getting help: The main contact address is sys-admin(a)cl.... You should always send email to that address rather than to a specific member of the support team as your request can then be dealt with by the most appropriate person. Emails to that address are fed into out job-ticketing system - it is important not to reply to old tickets with new issues nor to alter the subject line in the replies you recieve back via the ticketing system. Requests sent to to that address are processed by the person currently on the help-desk. So expect to have interactions with more than one person to resolve a fault - especially if it is a specialist issue or a complex one. During term time the help-desk runs in both the mornings and afternoons (see schedule). Outside of term we aim to cover at least one of the morning or afternoon sessions each day.
- An introduction to computing facilities is an on-line copy of the booklet new users are given.
- The Frequently Asked Questions list.
- The local system administration pages A to Z list.
- Web server information including how to export personal web pages files to the WWW and restrict access to them using .htaccess files and Raven passwords.
- Information for, and about, new arrivals at the Computer Lab. A selection of information, both technical and general, for new arrivals at the Computer Laboratory. This information is intended for everyone, visitors and longer-term residents. There is also information for the host of a visitor.
- Information for people leaving the Computer Lab, or moving into the Writing up/Hot Desk area.
- Equipment allocation, replacement and support
- Choice of Operating System on Lab managed machines
- For users of Unix systems. Redhat (Fedora and CentOS) and Ubuntu Linux. General information, software installation, configuration, applications.
- For users of Microsoft Windows systems. General information, access, applications.
- For users of private Macintosh OS/X systems Local configuration and integration information.
- Applications software, including MATLAB and Unix tools.
- Printing from Unix or Windows systems.
- Mail in the Computer Laboratory gives broad coverage of the facilities available.
Communications and the network
- Request a network connection.
- The Computer Lab network. An overview of the lab networks, both physical and wireless.
- The means of access to Computer Lab Systems, and other security related issues.
- Using the secure shell ssh to connect to the Laboratory.
- The one-time password system, that allows safe connection to lab unix systems in an insecure environment.
- Information about the Time Sharing Systems.
- Information about the File server and other file spaces.
- Disc usage and quota report (requires Raven).
- Users can boot a machine if it's off.
- For users of the Publicly-accessible scanners.
- For users of the Public CD/DVD writing machines.
- Specialist services such as SPSS, Adobe CS5 running under Windows.
- Public Windows Terminal Server machines.
- Video Conferencing Facilities
- The University High Performance Computing Service (HPCS)provides a means of running a number of parallel jobs on potentially large amounts of data. As such it is recommended as an alternative to the Computer Lab Condor facility.
- Condor is a specialized batch system for managing compute-intensive jobs. We have a local Condor Pool running on the processor bank machines. In addition large memory multi-CPU virtual machines can be made available for those with specific computational needs that are not met by Condor. To request access to those contact sys-admin(a)cl... to discuss your requirements.
If you spot things missing from this page and its sub-pages, please notify sys-admin(a)cl....
- Sys-admin news
25 Jun 2015
The latest version of TeXLive is now available on the filer in /usr/groups/texlive.
Using the standard TeXLive naming convention, it is in the directory 2015. (more...)
28 May 2015
Our Xen system was disrupted last night. It is believed to be mostly fixed, but users should check their systems.
A rogue process caused problems with the Lab routing, which caused the filer to be inaccessible, causing some domUs to deem their file systems broken. It is thought that most effected systems have been restarted, but there may still be problems which need fixing. Please email sys-admin if any help is needed.
9 Mar 2015
The main Lab DHCP servers have been replaced. This should not have changed things for clients, so if there are any problems, please report them to sys-admin.
3 Mar 2015
This time it killed a switch ad (at least) two discs.