cattle wrangling for pet whisperers: building a multi-hypervisor cloud

Cattle Wrangling For Pet Whisperers:

Date: October 22, 2013

Prepared by: Kenneth Hui

Building A Multi-hypervisor OpenStack Cloudwith KVM and vSphere

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Who Am I?

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Where I’ve Been

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Clarifying Some Points

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VMware is a Company NOT a Product

• VMware as a company sells multiple technologies and products

– vSphere

– vCloud

– End-user Computing

• VMware is in co-opetition with OpenStack– Cooperation

• vSphere and Nova• Nicira and Neutron

– Competition• ESXi vs. KVM• vCloud Automation Center (vCAC)• vCloud Hybrid Service (vCHS)

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OpenStack Is NOT a Hypervisor

• OpenStack Nova is a manager of hypervisors

• OpenStack can manage multiple hypervisors– https://wiki.openstack.org/wiki/HypervisorSupportMatrix

No vSphere Style HA Using KVM with libvirt

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So What’s Wrong with OpenStack?

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Let’s Talk Resiliency in the Cloud

Focus on Anti-fragility

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Focus on Scaling Out

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Focus on Application Resiliency

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Use Cattle Not 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 servers are disposable– VMs are not unique

– Tune and groom apps not the cattle

– Replace when necessary

– Shoot the cattle when it is sick

Let Loose the Monkeys!

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But I Still Want to Use vSphere in My Cloud

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So Why vSphere with OpenStack?

• Customers have sunk investments in vSphere

• Customers have legacy workloads that may not be suitable for KVM with libvirt

• vSphere can provide an on-ramp to a Cloud

• Provides an alternative to VMware vCHS

vSphere Is Not

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Multi-hypervisor Cloud Architecture - Grizzly

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Multi-hypervisor Cloud Architecture - Havana

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Nova Compute Scheduling

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How Nova Scheduler Sees vSphere

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Potential Resource Mismatch

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Potential Resource Misplacement

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Make Use of Host Aggregates

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Let’s End with Some First Principles

Nothing Is Forever in the Cloud

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Understand Your Workload

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Embrace Automation

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Current IT Culture Must Change

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Embrace Cultural Change

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Perhaps Most Importantly

Start With Why!

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Resources and Contact

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Resources

• OpenStack Configuration Reference– http://docs.openstack.org/trunk/config-reference/content/section_com

pute-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

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For More Information

You can reach me at:

Kenneth Hui

Open Cloud Architect

Rackspace

E-mail: ken.hui@rackspace.com

Twitter: @hui_kenneth

Blog: http://cloudarchitectmusings.com

Slides: http://www.slideshare.net/kenhui65/

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