SaltConf14 - Anita Kuno, HP & OpenStack - Using SaltStack for event-driven orchestration of OpenStack infrastructure components
1 like1,633 views
The document discusses the use of SaltStack for event-driven orchestration within OpenStack infrastructure by experts Anita Kuno and Dave Boucha. It highlights the shift from time-based to event-based orchestration for improved automation in OpenStack's development processes. Key benefits of SaltStack in this context include separation of concerns, ease of adaptation, and clear process management.
SaltConf14 - Anita Kuno, HP & OpenStack - Using SaltStack for event-driven orchestration of OpenStack infrastructure components
- 2. Using SaltStack for event-driven orchestration of OpenStack infrastructure components
- 3. Anita Kuno – hp and Dave Boucha - SaltStack
- 4. Who are we?
- 5. Anita Kuno works on upstream OpenStack a member of the infra team receives paycheques from hp
- 6. Dave Boucha does all the Salt things more great stuff even more great stuff
- 8. What is the purpose of the OpenStack Infrastructure team?
- 9. Provide automated services for OpenStack development
- 10. Creation and hosting of git repos Automating check and gate testing Communication tools Etherpad, Mailing Lists, Asterisk
- 11. Looking at the components
- 12. Gerrit Zuul Jenkins(es) Nodepool some glue from Gearman
- 14. Looks complicated, where's the Salt?
- 15. Salt Plays Nicely With Others
- 16. Salt-master running on the same server as the Puppet master
- 18. Salt-minions running on: Puppet master server Jenkins slaves Salt trigger server
- 19. Jenkins and Salt Event Bus
- 20. Jenkins sends test success message
- 21. Reactor tells puppetmaster to update git clone
- 22. Reactor executes: salt * puppet.run
- 25. Historically OpenStack has used Puppet for automated configuration
- 26. At the time, the choice was Chef or Puppet and Monty got Puppet to work
- 27. Puppet has been triggering off of cron jobs
- 28. Time based orchestration no longer fits our use case in all situations
- 29. Event Based Orchestration Separation of Concerns Avoid Programming the Orchestration
- 31. Let's take a look at OpenStack's manage-projects script
- 33. New repos are created by submitting a patch to gerrit
- 36. After an infra core ran manage- projects by hand
- 38. Right now time based orchestration doesn't get us the results we need for creating new repos
- 39. We need event based orchestration
- 40. How does Salt enable this? Salt Event Bus Salt Reactor
- 41. Salt Event Bus Communication bus between minions and master salt-call event.fire_master
- 42. Salt Reactor Salt Master system that “watches” the event bus Matches event “tags” to sls files
- 43. Salt Reactor Config Reactor Doc
- 45. Benefits of Salt in Openstack Infrastructure
- 47. Adapt easily to variable infrastructure
- 48. Domain Experts can focus on their areas
- 49. Each step is isolated from other steps
- 50. Process can be restarted at any point
- 51. Process can be modified easily
- 52. Process is clear