Category Archives: Local IT systems

Sys-admin news

Matlab updated to R2014b

The version of Matlab used on lab Linux systems has been updated from R2013b to R2014b. Condor users should be aware that the pathname of the version of Matlab that they should use under condor has also changed, see  http://www.cl.cam.ac.uk/local/sys/unix/applications/condor/condor-6.8.html#matlab … Continue reading

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Removal of avahi-daemon from Ubuntu 14.04 systems

It appears that the avahi-daemon causes the gtk+ library on Ubuntu 14.04 systems used by many GUIs  (e.g. firefox and chrome) to hammer the print spooler by opening hundreds of simultaneous connections, causing the GUI to crash. To avoid this, … Continue reading

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Internal Lab facilities may not be available

Certain commands used to do “privileged” things within the Lab may not be working for a while. If some feature you particularly need does not work, please email details to sys-admin

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condor pool moved to NFS sec=krb5

As emailed to all recent users of condor, the execute machines have now moved to NFS sec-krb5. The documentation has been updated. If anyone has problems, please email sys-admin.

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network and Xen problems

The network and xen world had problems 2014/09/04 Continue reading

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new slogin-otpw server – generate a new pad

mgk25 has just released version 1.5 of OTPW which does not need to use $HOME for the pad. This allows per-host local pads, removing the problems on NFS sec=krb5 systems. The DNS name slogin-otpw now points at the testing slogin … Continue reading

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Ubuntu 10.04 lucid libc bug

A libc bug involving nscd may cause some Ubuntu 10.04 systems to fail in various ways. The quick fix is to run “cl-asuser service nscd stop” and “cl-update-system” to install a fixed libc. Ubuntu 10.04 is getting a bit old … Continue reading

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Wireless outage

The report I have received from the UIS about today’s wireless outage is slightly inconclusive. It seems that there was a malfunction of the central controller that looks after our access points, causing them to reboot and go into a … Continue reading

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Testing new slogin / ssh-remote server

Please try out the new test TSS “slogin-new”. Continue reading

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www-dyn(1) upgrade

The server providing the www-dyn1 and www-dyn services is to be upgraded. Users are recommended to check that any pages they publish work on the www-dyn2 and www-dyn3 servers. See http://www.cl.cam.ac.uk/local/web/personal.html#www-dyn for full details.

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