OpenStack is an open standard cloud computing platform that supports both public and private clouds, offering features like scalability, fault tolerance, and an open community of contributors. The document discusses the architecture and components of OpenStack, including its various services like Nova for compute, Cinder for block storage, and Keystone for identity management, along with its integration with Xen and XCP. It also invites individuals to engage with the OpenStack community for collaboration and contributions.

1. OpenStack, Xen and XCP
John Garbutt
Senior Software Developer, Cloud, Citrix
@johngarbutt

2. What is OpenStack?

4. OpenStack
• Open Standard Cloud Computing Platform
• Public and Private Clouds
• Massively scalable and feature rich
• Open Development
• Open Design
• Open Community
• 3386 People, 200+ Contributors, 186 Companies

5. Design Guidelines
• Component based architecture
• Highly available
• Fault-Tolerant
• Recoverable
• Open Standards
• API Compatibility

6. Releases
• Folsom
ᵒunder development
ᵒdue September 2012
ᵒthis talk covers Folsom
• Essex
ᵒcurrent stable release
ᵒfirst released April 2012
• Six monthly Release + Conference
• Next: Grizzly due April 2013

8. Object Storage
• Swift
• User: Account, Container, Object
• Redundant storage of static data
• Scales horizontally to PB of data
• Uses eventual consistency
• Admin: Rings, Proxy, Replication,
Updaters, Auditors
• Contributed by Rackspace

9. Compute
• Nova
• Concepts: Server, Flavor, Image,
Metadata
• Multi-hypervisor: KVM, XenAPI, …
• Bare-metal provisioning
• Availability Zones
• Scheduling
• Contributed by NASA / Anso Labs

10. Block Storage
• Cinder
• Persistent block level storage device
• Create, attach/detach, snapshot
• Pluggable backend:
ᵒiSCSI, Ceph and others
• Least developed area
• Evolved from nova-volume

11. Networking
• Quantum
• Concepts: Network, Port, Attachment
• Network Isolation
• Floating IPs, Security Groups
• Support for SDN
• Other services: DHCP, DNS,
Firewall, QoS, LBaaS…
• Replaces nova-network

12. APIs
• APIs to configure virtual resources
• OpenStack REST APIs
ᵒCompute
ᵒImage
ᵒObject Storage
ᵒIdentity
ᵒNetwork
ᵒVolume / Block Storage
• Amazon APIs
• Standard APIs

14. Other Services
• OpenStack Keystone: Users, Roles and Service Catalog
• OpenStack Glance: Images and Snapshots
• Database: SQLAlchemy
• Message Queue: RabbitMQ and others

16. Other Projects
• Heat
• Ceilometer
• Reddwarf
• LBaaS
• Devstack
• Crowbar

17. How does OpenStack work?

18. Demo Time!
… let’s start a VM

19. How does OpenStack work?

21. 1
6
5
2
7
3 4

22. RPC using AMQP

23. How does OpenStack use Xen?

24. OpenStack and Xen
• XenAPI
ᵒUsed by Rackspace Public Cloud
ᵒStill developed by Citrix
ᵒXCP
ᵒXenServer
ᵒXCP-XAPI
• Libvirt + Xen
ᵒNot widely used
ᵒSUSE working
• http://wiki.openstack.org/HypervisorSupportMatrix

25. OpenStack and XenAPI
2
3
1

26. What is XCP?
• XCP = Xen Cloud Platform
• Open Source Citrix’s XenServer
• Datacenter and cloud-ready API
• Complete virtualization stack
• xcp-xapi
• iso

27. Citrix and OpenStack?

28. Citrix and OpenStack
• Still have an OpenSource team
• Maintain and improve XenAPI support
• Expose latest XenAPI features
• Documentation
• QA

29. Storage XenMotion
Live
Virtual
Machine
XCP Host XCP Host
VDI(s)
Local Local
Storage Storage
XCP Pool 1 XCP Pool 2

30. Demo Time!
… let’s move a VM

31. How can I get involved?

32. OpenStack Community
• http://www.openstack.org/community
• Email list and LaunchPad
• Sign CLA
• Clone from GitHub
• Pick Bug or Blueprint
• Submit to Gerrit
• Enjoy 

33. Join with Xen Community?
• Xen Doc Day
• Xen Test Day
• Work on OpenStack issues
• Ideas?

34. Work better. Live better.