Category Archives: Local IT systems

Sys-admin news

NFS version 4

Support for NFS version 4 has now been enabled on the main NetApp filer “elmer”. The change is upwards compatible in the sense that the older protocol remains available as well. However client systems which support multiple versions will normally … Continue reading

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WGB power cut 2014/11/09 17:43

There was a power cut in the WGB just before 17:43 for about ten seconds. See UIS report for their timeline.

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internal ‘sysdata’ web service fist to move to NFS sec=sys

sysadat has moved to Ubuntu apache 2.4 NFS sec=sys Continue reading

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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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