armedguy@ludd.ltu.se

Today we have conducted yet another user directory migration, this time done as an emergency. We managed to get our new storage system for userdata up and running (separate from all other systems) with SSD-based storage, and took the decision to migrate everything directly instead of scheduling a maintenance, due to the mail problems we have had. The temporary storage we had were running on old HDD-based storage and could not keep up with the iops from both mail, virtual machines and user…

Tomorrow (24th of Oct, 2019) we will start migrating user directories from AFS to GlusterFS.

This is being done for multiple reasons, including incompatiblity with our thin client cluster, performance, manageability, to name a few.

The main noticable change will be the home directory prefix going from /afs/ludd.ltu.se/users to /gfs/users. Please make sure to update any scripts that use the full path as the old one will go read only when we migrate.

Some mails might take a bit longer to arrive…

On the evening of 23rd of June, ALL LUDD services will be shut down for power maintenance as well as maintenance of OpenStack and member services. This includes all LUDD services, LUDD DUSTcloud services, LUDD DUST HPC services, as well as virtual and physical LCNet offerings.

Mail services will also be down, so the primary point of contact with LUDD administrators will be via #ludd @ irc.freenode.net or LUDD:s Telegram channel. Any questions prior to the downtime, or if you are interested to…

On the 25th of March, all systems and networks on LUDD and LCnet will be down during the whole day. This downtime might extend to the 26th as well.

Systems will be shut down on the 24th at 23:00. (LCNet users, please shut down beforehand, as we will only cut the power to the racks).

LUDD DUSTcloud services will also be down during this time, including all users machines.

The reason is due to electrical work in the datacenter.

We have finally migrated our first service over to the new compute cluster, and decided that physical member servers would be step one.

This means that our old (not very old though) member server discovery.ludd.ltu.se will be discontinued. It also means that if you were using taurus.ludd.ltu.se, luminous.ludd.ltu.se, or any of our other servers, they are gone too.

Our 4 new servers are…