This document discusses Docker plugin for Heat, which allows orchestrating Docker containers with OpenStack Heat templates. It describes how to install the Docker plugin for Heat, provides an example Heat template to launch a WordPress and MySQL stack, and points to the GitHub project page for more information. Users can deploy Docker containers instead of virtual machines through Heat and leverage the full Docker API through Heat templates.

1. Docker plugin for Heat
Orchestrate containers with OpenStack Heat
by Sam Alba
@sam_alba
sam@dotcloud.com
Oct 2013

2. What is Heat?
Oct 2013
“Heat implements an orchestration engine to
launch multiple composite cloud applications
based on templates.”
Source: https://wiki.openstack.org/wiki/Heat

3. Docker in OpenStack Havana
Oct 2013
Nova supports Docker as a new hypervisor starting with the
Havana release
➔ Deploy containers instead of VM with the same API (Nova)

4. Why using Heat directly?
Oct 2013
● This is not a replacement to the Nova driver!
● It allows to use the whole Docker API from a Heat
template
Resources:
Blog:
Type: OS::Heat::Docker
Properties:
Image: samalba/wordpress
Env:
- DB_PORT=42

5. How to use it?
Oct 2013
1. Install Heat with DevStack: https://wiki.openstack.
org/wiki/Heat/GettingStartedUsingDevstack
2. Install the Docker plugin
# Clone the repos
git clone git@github.com:dotcloud/openstack-heat-docker.git
# Link the plugin so Heat can find it
ln -sf $(cd openstack-heat-docker/plugin; pwd) /usr/lib/heat/docker

6. Demo time!
Example with Wordpress+MySQL

7. Demo time!
Oct 2013
Horizon UI > Orchestration > Stacks

8. Demo time!
Oct 2013
Configure the Stack (parameters of the Heat template)

9. Demo time!
Oct 2013
Launch it

10. Demo time!
Oct 2013

11. Run it yourself!
Oct 2013
Project home page:
https://github.com/dotcloud/openstack-heat-docker
… and please ask for help:
#docker on irc.freenode.org

12. Questions?
Oct 2013