Category Archives: Local IT systems

Sys-admin news

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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Further NTP related changes

NTP probes from the internet will fail to most Lab systems. Continue reading

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Purge of unused VLAN 100 IP addresses

IP addresses in 128.232/20 which have not been used for a year have been removed from the DNS. Continue reading

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WordPress upgraded to 3.8

The instance of wordpress used for http://www.cl.cam.ac.uk/news/ has been upgraded to 3.8. Please report any problems to sys-admin.

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DNSSEC for cl.cam.ac.uk

DNSSEC will be enabled 2013/11/18 for cl.cam.ac.uk Continue reading

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Filer running slowly

The filer is running slowly at the moment. This is because we’re copying the entire filesystem to the replacement machine. The ultimate goal is to make everything faster, but in the short term we have to suffer some pain.

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Purge of legacy automount information

It is believed that the last systems using the old “indirect” autofs LDAP tables have been shut down or moved to use “direct” filer mounts, so the information is no longer included in the LDAP data. If anyone observes failure … Continue reading

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Xen Server problems – please report anomalies

We have had a number of problems with one of our Xen pools. If any VMs appear to be behaving oddly, please contact sys-admin.

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CentOS5 (Linux server) network service problems.

A Redhat package problem caused CentOS 5 machines (Linux Servers) to loose access to certain network services. One of our two mail servers may have rejected email between 04:15 and 04:30, when the problem was spotted and the failing MTA … Continue reading

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DNS resolvers now validating

The CL DNS resolvers have DNSSEC validation enabled. Please report any DNS problems to sys-admin.

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