Ceph
Last updated
Last updated
The current set of G10 Ceph servers (karel, wumpus, and stobar) was acquired in 2018. Each server has 64GB of RAM, an 8-core AMD EPYC processor, 12 4TB hard drives, and two 400GB SSDs. See for more info on how they are configured.
, , and make up the failover Ceph cluster. The OSD disks themselves are on the array.
The current Ceph servers were purchased in the summer of 2018 along with , , and (see ).
After the events of the , karel, wumpus, and stobar became the new Ceph cluster. For a period of time, wumpus was running Ubuntu 16.04 LTS, leading to high latencies on the entire cluster. The ability to take it down (in the middle of a school day) to upgrade it (to 18.04 LTS with a newer kernel) is a testament to the fault-tolerancy and redundancy of Ceph.