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XenServer and OpenStack



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  • 1. XenServer and OpenStackJohn Garbutt, Senior Software Developer, Citrix@johngarbutt27th September 2012
  • 2. But Citrix does CloudStack?… but still got 3 people full time on OpenStack
  • 3. Why use Xen?… because it was built for the Cloud!
  • 4. History of Xen
  • 5. We propose a system that can execute code suppliedby an untrusted user, yet can charge this user for allresources consumed by the computation. Suchservers could be deployed at strategic locationsthroughout the Internet Xenoservers: Accounted execution of untrusted code IEEE Hot Topics in Operating Systems VII March 1999
  • 6. Why use Xen today?• Open Source with a large community and ecosystem• Mature and “Cloud Proven” ᵒAmazon, Rackspace and many others• True Type 1 hypervisor ᵒReduced TCB ᵒBest security, isolation, performance, scalability mix• Probably 10-12 Million OpenSource Users ᵒe.g. 3 x people on Debian have used Xen in the last 30 days vs KVM ᵒ12% of Ubuntu Servers hosted on Xen
  • 7. “Type 1” vs “Type 2” Hypervisor
  • 8. What is XenAPI?
  • 9. Xen Terminology Xen = virtual machine monitor XenAPI = API to manage Xen XAPI = XenAPI deamon Dom0 = trusted management VM DomU = untrusted guest VM
  • 10. 5 32 1 4
  • 11. How can I get started?Xen Cloud Platform (XCP) Citrix XenServer• Includes Xen and XAPI • Includes Xen and XAPI• Supported by Xen Community • Fully Supported by Citrix• Fully OpenSource • Free edition• xcp-xapi package ᵒWindows VMs ᵒPool based Live Migration ᵒDebian Wheezy & Ubuntu Precise ᵒHopefully in Fedora soon•
  • 12. XenAPI with OpenStack?… it’s what Rackspace use!
  • 13. 2 3 4 1
  • 14. How can I get started?
  • 15. Getting Started Install XenServer Run DevStack
  • 16. Ideas for the Future… help us choose and help us code?
  • 17. Even Better IsolationLook at Citrix XenClient XT
  • 18. Where can I find out more?
  • 19. Further Reading••• to-xen.html•
  • 20. Q&A
  • 21. Work better. Live better.