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		Openstack on EC2: using nested virtualization (ravellosystems.com)
		9 points by geertj on April 30, 2014 \| hide \| past \| favorite \| 1 comment

geertj on April 30, 2014 [–]

Author here. Actually it is using double nested virtualization. So there's 4 levels involved:

* Amazon runs Xen (bare metal OS)

* We run our hypervisor on top of Amazon (first level guest)

* Customer runs OpenStack compute node (second level guest, first level of nested).

* Instance runs on Openstack (third level guest, second level nesting)

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