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Bridging the Gap: Explaining OpenStack to VMware Administrators

Bridging the Gap: Explaining OpenStack to VMware Administrators. Kenneth Hui, Open Cloud Architect, Rackspace Scott Lowe, Engineering Architect, VMware. Before we start. Get involved! Audience participation is encouraged and requested.

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Bridging the Gap: Explaining OpenStack to VMware Administrators

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  1. Bridging the Gap:Explaining OpenStack toVMware Administrators • Kenneth Hui, Open Cloud Architect, Rackspace • Scott Lowe, Engineering Architect, VMware

  2. Before we start • Get involved! Audience participation is encouraged and requested. • Feel free to post updates to your social media platform of choice • I encourage you to take photos or videos of today’s session and share them online • This presentation will be made available online after the event

  3. Architecture

  4. Different origins • vSphere and OpenStack have very different origins • Those origins greatly influenced the resulting architectures • vSphere originated as a way to provide virtualized infrastructure • OpenStack originated as a way to provide consumable infrastructure services

  5. (picture of hammer and nail)

  6. (picture of multiple tools)

  7. Key architectural attributes • Loosely coupled vs. tightly coupled (more on that in a moment) • API driven • Multiple hypervisors (KVM, Xen, vSphere, Hyper-V) • Multiple disk formats (QCOW, RAW, VMDK...) • Integrated networking

  8. OpenStack architecture

  9. vSphere architecture

  10. Architectural mapping

  11. Terminology

  12. Virtual machines and instances

  13. Custom VMs and flavors

  14. Templates and images

  15. Virtual disks and volumes

  16. Operations

  17. Cattle vs. pets • Virtual Machines needs care and feeding • Name the VM • Tune and groom regularly • Feed pets with good food and supplements • Take pets to the vet when they are sick • Cloud instances are disposableVMs are not uniqueTune and groom apps not the cattleReplace when necessaryShoot the cattle when it is sick

  18. No vSphere-style HA using KVM with libvirt

  19. Instance evacuation • Without Shared Storage • The instance will be booted from a new disk, but will preserve the configuration, e.g. id, name, uid, ip...etc. • With Shared Storage • The instance will be booted from same disk and data will be preserved

  20. vMotion and Storage vMotion

  21. Instance migration

  22. OpenStack storage options

  23. Ephemeral storage

  24. Block storage

  25. Object storage

  26. Networking • Differences in how networking is handled really reflect the architectural differences in OpenStack and vSphere • Networking in vSphere is a bit more separate • OpenStack networking is more integrated

  27. Networking

  28. Networking

  29. Additional Resources • OpenStack Configuration Reference • http://docs.openstack.org/trunk/config-reference/content/section_compute-hypervisors.html • vSphere with OpenStack Blog Posts • http://cloudarchitectmusings.com/2013/06/24/openstack-for-vmware-admins-nova-compute-with-vsphere-part-1/ • http://cloudarchitectmusings.com/2013/06/26/openstack-for-vmware-admins-nova-compute-with-vsphere-part-2/ • http://cloudarchitectmusings.com/2013/07/09/openstack-compute-for-vsphere-admins-part-3-ha-and-vm-migration/ • http://cloudarchitectmusings.com/2013/08/05/openstack-compute-for-vsphere-admins-part-4-overcommitment-in-nova-compute/ • http://cloudarchitectmusings.com/2013/08/13/openstack-compute-for-vsphere-admins-part-5-designing-for-vsphere-with-nova-compute

  30. Thank you • Kenneth Hui • ken.hui@rackspace.com • @hui_kenneth • http://cloudarchitectmusings.com Scott Lowe slowe@vmware.com @scott_lowe http://blog.scottlowe.org

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