Cleanup keystone tokens
Every once in a while you really want to cleanup the token table of the Keystone database. A couple of weeks ago while backuping my cloud controller I noticed that the backup of the Keystone database …
Read more →OpenStack: perform consistent snapshots
Make consistent instance or volume snapshots.
Read more →Ceph: manage storage zones with CRUSH
This article introduces a simple use case for storage providers. For some reasons some customers would like to pay more for a fast storage solution and other would prefer to pay less for a …
Read more →Openstack and rsyslog
I don’t want to see my logs poluted by INFO messages saying “hey, I’m running!”. No thanks, it burns my I/O cycles for nothing. If it doesn’t work I have a monitoring …
Read more →Ceph and MDS
I’ve been often asked a couple of time, why CephFS is not ready? Does this statment is still true?
Read more →Last friday failover and Stonith were evil...
Friday, end of the week, almost week-end, almost time to enjoy the warm weather of my hometown and yet…
Read more →Make your RBD fly with flashcache
In this article, I will introduce the Block device cacher concept and the different solutions available. I will also (because it’s the title of the article) explain how to increase the …
Read more →Tip: OpenStack Retrieve usage statictics
While waiting for the Ceilometer project to be ready, nova provides some facilities to retrieve simple statistics. A little overview about the available commands.
Read more →Tip: lock an instance against admin permissions
Couple of days ago I was looking for a way to lock an instance but something more powerful than a simple lock via the nova API.
Read more →Tip: Add a specific keypair to a flavor
Folsom brought a lot of new features, however while playing with nova-manage, I came across a new option, option that I found very useful and that I’m about to share with you.
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