Ceph
VXLAN with VyOS and Ubuntu 18.04
VXLAN Virtual Extensible LAN uses encapsulation technique to encapsulate OSI layer 2 Ethernet frames within layer 4 UDP datagrams. More on this can be found
November 14, 2018
VXLAN Virtual Extensible LAN uses encapsulation technique to encapsulate OSI layer 2 Ethernet frames within layer 4 UDP datagrams. More on this can be found
Placement Groups stuck in activating When migrating from FileStore with BlueStore with Ceph Luminuous you might run into the problem that certain Placement Groups stay
When checking a Ceph cluster it’s useful to know which versions you OSDs in the cluster are running. There is a very simple on-line command
Many new disks like the Seagate He8 disks are using a technique called Shingled Magnetic Recording to increase capacity. As these disks offer a very
Ceph version Kraken (11.2.0) has been released and the Release Notes tell us that the new BlueStore backend for the OSDs is now available. BlueStore
For the Ceph training at 42on I use VirtualBox to build Virtual Machines. This is because they work under MacOS, Windows, and Linux. For the
Starting with Ceph version Jewel (10.2.X) all daemons (MON and OSD) will run under the privileged user ceph. Prior to Jewel daemons were running under
Slow requests in Ceph When a I/O operating inside Ceph is taking more than X seconds, which is 30 by default, it will be logged
TRIM/DISCARD Using TRIM/DISCARD you can give back free space to a Ceph cluster. Normally, any thin provisioned block device will keep on growing until its
At PCextreme we have a 700TB Ceph cluster which is used behind our public cloud Aurora Compute which runs Apache CloudStack. Ceph health One of