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High Availability from the DevOps side - OpenStack Summit Portland
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High Availability from the DevOps side - OpenStack Summit Portland

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  • 1. High Availability in OpenStack from DevOops! sideEmilien Macchi, Sébastien HanCloud Engineers @ eNovance
  • 2. whoarewe Seb Emile- DevOps - DevOps- Ceph Specialist - Doc Contributor- Blogger - Quantum Fanatic
  • 3. AgendaContributions Pacemaker Resource Agents Official Documentation Puppet ModulesExperiences Medium Public Cloud Large Public CloudLook further
  • 4. Contributions
  • 5. Pacemaker Resource Agents- Essex / Folsom / Grizzly- Covers SPOF services- Future: no future Download them all! https://github.com/madkiss/openstack-resource-agents
  • 6. Official Documentation- Active / Passive mode- MySQL- RabbitMQ- OpenStack APIs- Need contributors- Future: Active / Active RTFM ! http://docs.openstack.org/trunk/openstack-ha/
  • 7. Puppet Labs- Update modules for Grizzly- Nova | Cinder | Quantum are HA aware- Make modules for HA deployments(Work in Progress)
  • 8. Experiences
  • 9. Use case #1: Medium-Size Public Cloud
  • 10. coming soon
  • 11. Feedback✓ Easy and fast deployment (with Puppet)✓ Enough for our needs✗ Not scalable enough✗ Split brains risks✗ DRBD?Can be improved:Migrate to Grizzly, change for active / active...
  • 12. Use case #2: Large-Size Public Cloud
  • 13. Feedback✓ Highly scalable✓ Maintenance✓ The Network scheduler allows us to scaleL3✗ Networking: L3 is not HA✗ OVS plugin does not scale (L2 isolation)In progress : testing cells
  • 14. To infinity... and beyond
  • 15. Newcomers- Nova-conductor (horizontal scaling)- Ceilometer improvements- Quantum Load Balancing & Metadata agents
  • 16. Des questions ?E-mail : emilien@enovance.comIRC : EmilienMTwitter : @EmilienMacchiBlog : http://my1.fr/blogE-mail : sebastien@enovance.comIRC : lesebTwitter : @sebastien_hanBlog: http://sebastien-han.fr/blog