Safely backing up your Ceph monitors
So you might wonder: Why do I need to make a backup of my Ceph monitors? I have multiple monitors. That’s true, but would you run into the very unfortunate situation where you loose all you monitors, you loose all your data. The monitors contain very important metadata (pgmap, osdmap, crushmap) to run your cluster. […]
Changing the region of a RGW bucket
As of Ceph version 0.67 (Dumpling) the Ceph Object Gateway aka RADOS Gateway supports regions. This allows you to create a geo-replicated Amazon S3 compatible service. While working on a setup we decided later in the process that we wanted regions, but we already created about 50 buckets with data in them. We didn’t feel […]
A quick note on running CloudStack with RBD on Ubuntu 12.04
When you want to use Ceph as Primary Storage in Apache CloudStack you need a recent version of libvirt with RBD storage pool support enabled. If you want to use Ubuntu 12.04 LTS (Precise) you would need to manually compile libvirt since the default libvirt version doesn’t include RBD storage pool support. But not any […]