Remove a MDS server from a Ceph cluster
Quick tip.
If you don’t use CephFS, you don’t need a MDS server. However if you installed it simply to try CephFS and if you’r done playing with it here is how to delete the MDS server.
Download a Glance image from RBD
Quick tip.
If you want to download a glance image stored in a RBD backend.
OpenStack: Nova components HA
I wrote all the missing resource agents related to the nova ecosystem. All the RAs are available on my Github. All the ‘nova’ RAs mainly re-use the structure of the resource agent written by Martin Gerhard Loschwitz from Hastexo. See here.
OpenStack: Glance and Keystone HA
The purpose of this article is to achieve high-availability for some OpenStack components.
Use RBD on a client
Quick tip on Ceph. The linux kernel RBD (rados block device) driver allows striping a linux block device over multiple distributed object store data objects. The libceph module takes care of that.
Setup Cloud Pipe VPN in OpenStack
This article mainly re-uses the OpenStack official documentation. Since the latter has errors in it, I fixed them. It’s fully functionnal under Ubuntu 12.04 distro.
Introducing FlashCache
FlashCache is a generic write back block level storage caching solution developed by Facebook. It’s actively used in production within Facebook and released as GPL v2 license.
Delete a tenant in OpenStack
If you are running on OpenStack Essex, you should have some problem to delete a tenant.
Introducing Ceph to OpenStack
Managing Open Source Cloud Platforms
Several ways to manage your private cloud with Open Source softwares!