This is the demonstration of the flow of REST API requests between key services that comprise OpenStack Compute, exactly as it happens when one provisions a virtual machine. The information is accurate as of OpenStack Essex release. Mirantis uses this exact deck for one of the modules of its 2-day OpenStack BootCamp (see http://www.mirantis.com/training ). We have published it due to popular demand and multiple requests to make it publicly available. Enjoy!

1. OpenStack
Request
Flow
B U I LT F O R
Engineering
Services for openstack TM
OpenStackTM
CLOUD SOFTWARE

2. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

3. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

4. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

5. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

6. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

7. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

8. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

9. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

10. B U I LT F O R
Find
an
appropriate
host
via
filtering
and
weigh5ng
openstack TM
Update
instance
entry
with
host
ID
CLOUD SOFTWARE
www.mirantis.com Keystone

11. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

12. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

13. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

14. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

15. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

16. B U I LT F O R
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

17. B U I LT F O R
Poll
for
request
instance
status
openstack TM
CLOUD SOFTWARE
www.mirantis.com Keystone

18. Engineering Services for OpenStack