Openstack Xen and XCP
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Cloud leaders such as Rackspace and Internap are building their next generation cloud using OpenStack and Xen+XenAPI, not everyone uses OpenStack with KVM. Lets take a look at how OpenStack and Xen work together, and look at how you can get more involved.
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Openstack Xen and XCP
- 1. OpenStack, Xen and XCP John Garbutt Senior Software Developer, Cloud, Citrix @johngarbutt
- 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
- 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.
Notas do Editor
- Taken from: http://www.openstack.org/software/Compute: VMsStorage: Block and ObjectNetworking: QuanutmShared: Glance, KeystoneAll accessed through APIs, reference GUI provided too
- Contributors in Essex
- Component based architecture: Quickly add new behaviors Highly available: Scale to very serious workloads Fault-Tolerant: Isolated processes avoid cascading failures Recoverable: Failures should be easy to diagnose, debug, and rectify Open Standards: Be a reference implementation for a community-driven API API Compatibility: Nova strives to provide API-compatible with popular systems like Amazon EC2
- Taken from: http://www.openstack.org/software/Compute: VMsStorage: Block and ObjectNetworking: QuanutmShared: Glance, KeystoneAll accessed through APIs, reference GUI provided too
- http://docs.openstack.org/essex/openstack-object-storage/admin/content/understanding-how-object-storage-works.html
- More details: http://api.openstack.org/
- nova-network:Flat DHCP (private cloud may have network public), floatingips (is other network is private), VLAN networking (limitations overcome by SDN)Integrating with existing networks: independent routable subnet is easiest
- http://www.openstack.org/themes/openstack/images/essex/launching-instances.jpgOpenStackHorizon: Dashboard
- These are the current core projectsTaken from: http://www.openstack.org/software/
- http://docs.openstack.org/essex/openstack-compute/admin/content/logical-architecture.htmlAPI + Dashboard: How you access the systemIdentity: Account managementSwift:storage distributed across multiple disksMassive rsync loopNote:Volume and Network being pulled out as separate components
- Lets look at how an image is launched in OpenStack
- More details:http://docs.openstack.org/developer/nova/devref/rpc.htmlAlso describe cast (just the top half)