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Ceph for Cinder in TripleO

A wrap up on the status of TripleO's Cinder HA spec. First, a link to the cinder-ha blueprint, where you can find even more links, to the actual spec (under review) and the code changes (again, still under review). Intent of the blueprint is for the TripleO deployments to keep Cinder volumes available and Cinder operational in case of failures of any node.

This said, should $subject sound interesting to you, beware the code still …

TripleO vs OpenStack HA

One of the topics discussed during the TripleO mid-cycle meetup in RDU was our status in relation to deploying OpenStack in a highly available manner. This had been worked on for some time and recently reached a usable state.

Majority of complications seem to come from two factors: 1) we need to guarantee availability of external services too, like the database and the message broker, which aren't exactly designed for a scale-out scenario, 2) despite …

My takeaways from EuroPython 2013

Been there! The event was very well organized and even the food was good. The following are the talks I attended with some comments and my takeaways.

Despite the EuroPython 2013 lasting a full week, including the weekend with some code sprints, I could only join the event for three days, from Tuesday to Thursday. Still it was a great experience and a good chance to learn about new things while also meet people who …

OpenStack Glance - Use Swift as backend

On OpenStack again. Glance is the component in charge of hosting the images (and image snapshots) to be cloned for the ephemeral instances. Images usually are just some random big files so it makes perfect sense to use Swift for such an object (a File Object storage)!

As usual, some assumptions before we start:

  • you're familiar with the general OpenStack architecture
  • you have already some Glance image node configured and working as expected

This said …

OpenStack Cinder - Configure multiple backends

Following my first post of the series discussing how to scale OpenStack Cinder to multiple nodes, with this I want to approach the configuration and usage of the multibackend feature landed in Cinder with the Grizzly release.

This feature allows you to configure a single volume node for use with more than a single backend driver. You can find all about the few configuration bits needed also in the OpenStack block storage documentation. That makes …

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