Mailing List Archive: Compute node on bare metal?

Compute node on bare metal?

Jul 2, 2018, 6:45 AM

Post #1 of 3 (473 views)

Hi,

I have recently finished installing a minimal OpenStack Queens environment
for a school project, and was asked whether it is possible to deploy an
additional compute node on bare metal, aka without an underlying operating
system, in order to eliminate the operating system overhead and thus to
maximize performance. I personally guess not because the compute node needs
to run some services in order to function. Am I wrong?

Please keep in mind that I am not referring to the Ironic service, as I
wish to install a compute node on bare metal, not to provision bare metal
machines to users.

Thanks!

Re: Compute node on bare metal? [ In reply to ]

jaypipes at gmail

Jul 2, 2018, 7:45 AM

Post #2 of 3 (473 views)

Permalink

On 07/02/2018 09:45 AM, Houssam ElBouanani wrote:
> Hi,
>
> I have recently finished installing a minimal OpenStack Queens
> environment for a school project, and was asked whether it is possible
> to deploy an additional compute node on bare metal, aka without an
> underlying operating system, in order to eliminate the operating system
> overhead and thus to maximize performance.

Whomever asked you about this must be confusing a *hypervisor* with an
operating system. Using baremetal means you eliminate the overhead of
the *hypervisor* (virtualization). It doesn't mean you eliminate the
operating system. You can't do much of anything with a baremetal machine
that has no operating system on it.

Best,
-jay

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Re: Compute node on bare metal? [ In reply to ]

berndbausch at gmail

Jul 2, 2018, 3:34 PM

Post #3 of 3 (472 views)

Permalink

They are probably thinking of Vmware ESXi, which is both an operating
system kernel, named vmkernel, and a hypervisor.

OpenStack is not a hypervisor. It /uses /hypervisors to manage virtual
machines. Furthermore, OpenStack is written in Python, so that, as a
minimum, your "baremetal" would have to be able to run Python code.

On 7/2/2018 11:45 PM, Jay Pipes wrote:
> On 07/02/2018 09:45 AM, Houssam ElBouanani wrote:
>> Hi,
>>
>> I have recently finished installing a minimal OpenStack Queens
>> environment for a school project, and was asked whether it is
>> possible to deploy an additional compute node on bare metal, aka
>> without an underlying operating system, in order to eliminate the
>> operating system overhead and thus to maximize performance.
>
> Whomever asked you about this must be confusing a *hypervisor* with an
> operating system. Using baremetal means you eliminate the overhead of
> the *hypervisor* (virtualization). It doesn't mean you eliminate the
> operating system. You can't do much of anything with a baremetal
> machine that has no operating system on it.
>
> Best,
> -jay
>
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> Post to : openstack@lists.openstack.org
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