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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. - PowerPoint PPT Presentation
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Bridging the Gap:Explaining OpenStack toVMware Administrators
Kenneth Hui, Open Cloud Architect, RackspaceScott Lowe, Engineering Architect, VMware
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
Architecture
•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
Different origins
(picture of hammer and nail)
(picture of multiple tools)
•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
Key architectural attributes
OpenStack architecture
vSphere architecture
Architectural mapping
Terminology
Virtual machines and instances
Custom VMs and flavors
Templates and images
Virtual disks and volumes
Operations
•Cloud instances are disposableVMs are not uniqueTune and groom apps not the cattleReplace when necessaryShoot the cattle when it is sick
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
No vSphere-style HA using KVM with libvirt
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
vMotion and Storage vMotion
Instance migration
OpenStack storage options
Ephemeral storage
Block storage
Object storage
•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
Networking
Networking
Networking
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
Thank youKenneth [email protected]@hui_kennethhttp://cloudarchitectmusings.com
Scott [email protected]@scott_lowehttp://blog.scottlowe.org