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From: =?UTF-8?Q?Arne_Vajh=C3=B8j?= <arne@vajhoej.dk>
Newsgroups: comp.os.vms
Subject: Re: VMWARE/ESXi Linux
Date: Tue, 3 Dec 2024 19:50:55 -0500
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On 12/3/2024 7:41 PM, Dan Cross wrote:
> In article <vio70q$e1fp$1@dont-email.me>,
> Arne Vajhøj  <arne@vajhoej.dk> wrote:
>> On 12/3/2024 3:24 PM, Lawrence D'Oliveiro wrote:
>>> On Tue, 3 Dec 2024 09:40:40 -0500, Arne Vajhøj wrote:
>>>> If you look at what is available and what it is used for then you will
>>>> see that what is labeled type 1 is used for production and what is
>>>> labeled type 2 is used for development. It matters.
>>>
>>> What people discovered was, they needed to run full-fat system management
>>> suites, reporting tools, backup/maintenance tools etc on the hypervisor.
>>> In other words, all the regular filesystem-management functions you need
>>> on any server machine. So having it be a cut-down kernel (“type 1”) didn’t
>>> cut it any more -- virtualization is nowadays done on full-function Linux
>>> kernels (all “type 2”).
>>
>> Having a full host OS is very nice for a development system with a few
>> VM's to build and test various stuff.
>>
>> It does not scale to a large production environment. For that you need
>> central management servers.
> 
> There are some very senior engineers at Google and Amazon who
> run the largest VM-based production environments on the planet
> and they disagree.  There, VMs run under a "full host OS."

You totally missed the point.

With KVM they do have a full host OS.

But they don't need it to "run full-fat system management
suites, reporting tools, backup/maintenance tools etc on
the hypervisor", because they don't manage all those VM's
that way. That would be impossible.

Arne