Author Archives: pb22

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

Posted in Local IT systems | Tagged , , | 1 Comment

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.

Posted in Local IT systems | Tagged , , , | Comments Off

DNSSEC for cl.cam.ac.uk

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

Posted in Local IT systems | Leave a comment

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.

Posted in Local IT systems | Leave a comment

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

Posted in Local IT systems | Tagged , , | Comments Off

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.

Posted in Local IT systems | Tagged | Leave a comment

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

Posted in Local IT systems | Tagged | Leave a comment

DNS resolvers now validating

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

Posted in Local IT systems | Leave a comment

CentOS 5.7 released – kernel lock bug fixed

Although not yet announced on the CentOS web site, CentOS 5.7 has been released, which includes a new kernel which fixes the bug which caused the machine to OOPS if an NFS file lock was attempted. As such, there will … Continue reading

Posted in Local IT systems | Tagged , , | Leave a comment

New package signing key

A new key (3294FB03) has been generated to sign all Lab packages (RPMs and .debs). This has been installed on most Lab managed machines. Private machines which use the Lab repositories will need to register the new key.

Posted in Local IT systems | Tagged , | Leave a comment