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what is the best infrastructure for openstack ?

asked 2019-01-23 10:24:13 -0500

hasan gravatar image

updated 2019-01-23 11:47:08 -0500

what is the best infrastructure design for openstack ?!!
in other words , should i deploy openstack on servers directly (bare-metal) , or above L0 hypervisors like Xen !!
PS : this is a production environment .

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Car analogy: Which car is the best, a 38 ton truck or a Ferrari?

I don't know if an L0 hypervisor can run Python programs, but apart from that, there is no best design. Which design suits you best depends on your needs, constraints and environment.

Bernd Bausch gravatar imageBernd Bausch ( 2019-01-23 18:51:00 -0500 )edit

Can you be more detailed? for example in which case i should deploy openstack on xenserver ?!

hasan gravatar imagehasan ( 2019-01-28 08:43:37 -0500 )edit

Honestly , i don't see the need or the goal to deploy openstack above xenserver !! because this will led to relatively poor performance because this will cause many nested virtualization and many layers like this : Hardware --> Xen --> Compute --> KVM --> Instance

hasan gravatar imagehasan ( 2019-01-28 08:43:56 -0500 )edit

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answered 2019-01-28 16:37:22 -0500

zaneb gravatar image

Generally speaking, there's no reason to run on top of Xen (and you certainly shouldn't run on top of other hypervisors, like KVM, that don't support nested virt well).

The Rackspace cloud does, I believe, run on top of Xen. This enabled them to dynamically manage their server inventory, and do stuff like e.g. deploying test clouds. If you too have spent millions of dollars on custom deployment tooling that relies on Xen as an L0 hypervisor, then you should consider it. However, if you're asking this question then you haven't and you shouldn't.

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answered 2019-01-27 11:46:35 -0500

jckreddy gravatar image

It purely depends on your requirements.

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Asked: 2019-01-23 10:23:45 -0500

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Last updated: Jan 28 '19