4 ms·

OpenStack Havana is out and includes native Docker support

34 points by julien421 13y ago

shykes 13y ago
Sam (the guy who implemented docker support in Nova) is now adding docker support to Heat, the Openstack alternative to Cloudformation. It looks really awesome :) http://www.mail-archive.com/openstack-dev@lists.openstack.org/msg06415.html http://www.mail-archive.com/openstack-dev@lists.openstack.or...
- druiid 13y ago
  Very cool. I think actually that will be more useful than just having a docker implementation for Nova as Heat will allow it to be more like a PaaS.
Daviey 13y ago
I am yet to understand what docker brings to nova, what the existing lxc driver couldn't do.. It seems like an abstraction layer which is hidden by nova.. therefore no new gain?
- chubot 13y ago
  So, I'm not sure either, but I think the AUFS addition makes images easier to sync between machines? That is, say I start with an Ubuntu image. Then I run an application on it on a Docker cloud. Then I install Python 3.0 and NumPy on it and take a snapshot. And then I want to run the new app with these libraries. I think when you deploy, or when images are being sync'd to machines, they can use the differential compression based on AUFS snapshots. So instead of transferring 300 MB, maybe you will only transfer 30 MB. That would seem logical based on what I've read. But I have never actually gotten Docker to work, so I don't know. Would appreciate any comments on this.
  - shykes 13y ago
    Hey, sorry to hear that you didn't get docker to work! If you want to try again, feel free to come by our irc channel, #docker on freenode. The people there are very nice and will be happy to help you out.
- wmf 13y ago
  There is a community that is building Docker images for you. Nova-LXC not so much.
  - jpetazzo 13y ago
    Yup; there are lots of Docker images available at http://index.docker.io/; http://index.docker.io/; and more interesting features are on the way (trusted images, automated builds...) Also, the Docker workflow is appealing to (at least) some people; this helps them to integrate Docker and OpenStack together.
- SEJeff 13y ago
  A common container platform that is cross cloud portable for one
- derefr 13y ago
  Remember, Docker is primarily a container format, not a virtualization platform. Supporting Docker in your own virtualization platform means letting people plug in their pre-made Docker-compatible containers have have them Just Work.

34 points by julien421 13y ago

Sam (the guy who implemented docker support in Nova) is now adding docker support to Heat, the Openstack alternative to Cloudformation. It looks really awesome :) http://www.mail-archive.com/openstack-dev@lists.openstack.org/msg06415.html http://www.mail-archive.com/openstack-dev@lists.openstack.or...

druiid 13y ago
Very cool. I think actually that will be more useful than just having a docker implementation for Nova as Heat will allow it to be more like a PaaS.

Daviey 13y ago

I am yet to understand what docker brings to nova, what the existing lxc driver couldn't do.. It seems like an abstraction layer which is hidden by nova.. therefore no new gain?

chubot 13y ago
So, I'm not sure either, but I think the AUFS addition makes images easier to sync between machines? That is, say I start with an Ubuntu image. Then I run an application on it on a Docker cloud. Then I install Python 3.0 and NumPy on it and take a snapshot. And then I want to run the new app with these libraries. I think when you deploy, or when images are being sync'd to machines, they can use the differential compression based on AUFS snapshots. So instead of transferring 300 MB, maybe you will only transfer 30 MB. That would seem logical based on what I've read. But I have never actually gotten Docker to work, so I don't know. Would appreciate any comments on this.
- shykes 13y ago
  Hey, sorry to hear that you didn't get docker to work! If you want to try again, feel free to come by our irc channel, #docker on freenode. The people there are very nice and will be happy to help you out.
wmf 13y ago
There is a community that is building Docker images for you. Nova-LXC not so much.
- jpetazzo 13y ago
  Yup; there are lots of Docker images available at http://index.docker.io/; http://index.docker.io/; and more interesting features are on the way (trusted images, automated builds...) Also, the Docker workflow is appealing to (at least) some people; this helps them to integrate Docker and OpenStack together.
SEJeff 13y ago
A common container platform that is cross cloud portable for one
derefr 13y ago
Remember, Docker is primarily a container format, not a virtualization platform. Supporting Docker in your own virtualization platform means letting people plug in their pre-made Docker-compatible containers have have them Just Work.