[ovirt-users] Nested KVM for oVirt 4.1.2

Tue Jun 6 13:09:12 UTC 2017

> Well you can always run the engine on a physical node directly too.
> The question is why would you want that when hosted engine gives you
> fail-over and reliability features.

Failover & reliability are definitely worth having

> So I would install Node on all four hosts, enable all of them for
> hosted engine and enable three of them for Gluster if hyperconverged
> is what your want.

Hyperconverged is what I want.
There does not seem to be a good reason to have a 4th node, so I'll take 
your advice & go 3 nodes + hosted engine.

On 2017-06-06 01:34, Martin Sivak wrote:
> Hi,
> 
>> Real hardware: what I meant to say was I have 4 hosts (not vm's).
>> If I understand you correctly, I should install oVirt Node (using the 
>> iso)
>> on 3 of my hosts & the hosted engine runs as a vm on "Host 1"?
> 
> Hosted engine runs as VM on one of the hosts. But not necessarily on
> the first one (it can even move if it decides so).
> 
>> Why can't the hosted engine run on its own host?
> 
> Well you can always run the engine on a physical node directly too.
> The question is why would you want that when hosted engine gives you
> fail-over and reliability features.
> 
> So I would install Node on all four hosts, enable all of them for
> hosted engine and enable three of them for Gluster if hyperconverged
> is what your want.
> 
> Best regards
> 
> --
> Martin Sivak
> SLA / oVirt
> 
> On Tue, Jun 6, 2017 at 10:09 AM,  <ovirt at fateknollogee.com> wrote:
>> Sandro, thx for the reply.
>> Once I get comfortable with oVirt + CentOS, then I'll go & use Fedora 
>> 25/26
>> and contribute!
>> 
>> Real hardware: what I meant to say was I have 4 hosts (not vm's).
>> If I understand you correctly, I should install oVirt Node (using the 
>> iso)
>> on 3 of my hosts & the hosted engine runs as a vm on "Host 1"?
>> 
>> Why can't the hosted engine run on its own host?
>> 
>> 
>> On 2017-06-06 03:29, Sandro Bonazzola wrote:
>>> 
>>> On Mon, Jun 5, 2017 at 10:13 PM, <ovirt at fateknollogee.com> wrote:
>>> 
>>>> I want to test oVirt with real hardware, no more nested VMs.
>>>> 3 hosts, each vm will be Fedora (maybe CentOS, I prefer Fedora)
>>> 
>>> 
>>> Please note Fedora support within oVirt project is a best-effort 
>>> task.
>>> There's no testing of oVirt on Fedora done by the core development
>>> team.
>>> That said, I would be happy if you contribute fedora testing :-)
>>> 
>>> I'm not sure to understand what you're looking into now since you 
>>> talk
>>> about real hardware and VMs in the same sentence.
>>> Suggested minimal deployment is 3 real hardware hosts as hypervisor
>>> nodes and hosted engine with hyperconverged deployment.
>>> You can use oVirt Node iso in order to do the whole deployment using
>>> cockpit.
>>> 
>>>> What is the install process?
>>>> 
>>>> On 2017-05-30 02:42, Sandro Bonazzola wrote:
>>>> 
>>>> On Tue, May 30, 2017 at 5:18 AM, <ovirt at fateknollogee.com> wrote:
>>>> 
>>>> Sandro,
>>>> If & when one decides to "graduate" & use real hardware, what is the
>>>> install process?
>>>> 
>>>> The install process depends on how you want to design your lab .
>>>> You can have a small deployment with just 3 hosts in hyperconverged
>>>> setup or a large datacenter with 200 hypervisors and one or more
>>>> dedicated SAN for the storage.
>>>> If you go with an hyperconverged setup, you can install oVirt Node
>>>> on
>>>> 3 hosts and then on one of them use cockpit to deploy gluster and
>>>> hosted engine on top of it in hyperconverged mode.
>>>> 
>>>> You can find an installation guide here:
>>>> http://www.ovirt.org/documentation/install-guide/Installation_Guide/
>>>> [1]
>>>> 
>>>> Is the gluster part still automated or that has to be done
>>>> manually?
>>>> 
>>>> If you go with hyperconverged mode it's now automated. You can find
>>>> more info here:
>>>> 
>>> 
>>> http://www.ovirt.org/develop/release-management/features/gluster/gdeploy-cockpit-integration/
>>>> 
>>>> [2]
>>>> Sahina, please ensure above link is updated. I see it shows the
>>>> feature still in WIP while it's been released.
>>>> 
>>>> Another question, what type of use cases & jobs is oVirt being
>>>> deployed in & how are people getting tech support?
>>>> 
>>>> About use cases for oVirt you can find some examples here:
>>>> http://www.ovirt.org/community/user-stories/users-and-providers/ [3]
>>>> If you want dedicated support, I would recommend to get a Red Hat
>>>> Virtualization (which is oVirt with technical support and some
>>>> additions) subscription getting Red Hat support.
>>>> Another place to get support if you stay with oVirt is the
>>>> community:
>>>> this mailing list, the IRC channel and social media, have a look
>>>> here
>>>> for other contacts: http://www.ovirt.org/community/ [4]
>>>> 
>>>> On 2017-05-29 04:33, Sandro Bonazzola wrote:
>>>> On Mon, May 29, 2017 at 10:21 AM, <ovirt at fateknollogee.com> wrote:
>>>> 
>>>> I assume people are using oVirt in production?
>>>> 
>>>> Sure, I was just wondering why you were running in nested
>>>> virtualization :-)
>>>> Being your use case a "playground" environment, I can suggest you to
>>>> have a look at Lago http://lago.readthedocs.io/en/stable/ [5] [1]
>>>> and at Lago demo at https://github.com/lago-project/lago-demo [6]
>>>> [2]
>>>> to help you preparing an isolated test environment for your
>>>> learning.
>>>> 
>>>> On 2017-05-29 04:13, Sandro Bonazzola wrote:
>>>> On Mon, May 29, 2017 at 12:12 AM, <ovirt at fateknollogee.com> wrote:
>>>> 
>>>> 
>>> 
>>> http://community.redhat.com/blog/2013/08/testing-ovirt-3-3-with-nested-kvm/
>>>> 
>>>> [7]
>>>> [3]
>>>> [1]
>>>> [1]
>>>> 
>>>> I have one CentOS7 host (physical) & 3x oVirt nodes 4.1.2 (these are
>>>> vm's).
>>>> 
>>>> Hi, can you please share the use case for this setup?
>>>> 
>>>> I have installed vdsm-hook-nestedvm on the host.
>>>> 
>>>> Should I install vdsm-hook-macspoof on the 3x node vm's?
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at ovirt.org
>>>> http://lists.ovirt.org/mailman/listinfo/users [8] [4] [2] [2]
>>>> 
>>>> --
>>>> 
>>>> SANDRO BONAZZOLA
>>>> 
>>>> ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA ENG VIRTUALIZATION R&D
>>>> 
>>>> Red Hat EMEA [3]
>>>> 
>>>> [4]
>>>> 
>>>> TRIED. TESTED. TRUSTED. [5]
>>>> 
>>>> Links:
>>>> ------
>>>> [1]
>>>> 
>>>> 
>>> 
>>> http://community.redhat.com/blog/2013/08/testing-ovirt-3-3-with-nested-kvm/
>>>> 
>>>> [7]
>>>> [3]
>>>> [1]
>>>> [2] http://lists.ovirt.org/mailman/listinfo/users [8] [4] [2]
>>>> [3] https://www.redhat.com/
>>>> [4] https://red.ht/sig
>>>> [5] https://redhat.com/trusted
>>>> 
>>>> --
>>>> 
>>>> SANDRO BONAZZOLA
>>>> 
>>>> ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA ENG VIRTUALIZATION R&D
>>>> 
>>>> Red Hat EMEA [3]
>>>> 
>>>> [4]
>>>> 
>>>> TRIED. TESTED. TRUSTED. [5]
>>>> 
>>>> Links:
>>>> ------
>>>> [1]
>>>> 
>>>> 
>>> 
>>> http://community.redhat.com/blog/2013/08/testing-ovirt-3-3-with-nested-kvm/
>>>> 
>>>> [7]
>>>> [3]
>>>> [2] http://lists.ovirt.org/mailman/listinfo/users [8] [4]
>>>> [3] https://www.redhat.com/
>>>> [4] https://red.ht/sig
>>>> [5] https://redhat.com/trusted
>>>> 
>>>> --
>>>> 
>>>> SANDRO BONAZZOLA
>>>> 
>>>> ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA ENG VIRTUALIZATION R&D
>>>> 
>>>> Red Hat EMEA [5]
>>>> 
>>>> [6]
>>>> 
>>>> TRIED. TESTED. TRUSTED. [7]
>>>> 
>>>> Links:
>>>> ------
>>>> [1] http://lago.readthedocs.io/en/stable/ [5]
>>>> [2] https://github.com/lago-project/lago-demo [6]
>>>> [3]
>>>> 
>>> 
>>> http://community.redhat.com/blog/2013/08/testing-ovirt-3-3-with-nested-kvm/
>>>> 
>>>> [7]
>>>> [4] http://lists.ovirt.org/mailman/listinfo/users [8]
>>>> [5] https://www.redhat.com/
>>>> [6] https://red.ht/sig
>>>> [7] https://redhat.com/trusted
>>> 
>>> 
>>> --
>>> 
>>> SANDRO BONAZZOLA
>>> 
>>> ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA ENG VIRTUALIZATION R&D
>>> 
>>> Red Hat EMEA [9]
>>> 
>>>                  [10]
>>> 
>>> TRIED. TESTED. TRUSTED. [11]
>>> 
>>> 
>>> 
>>> Links:
>>> ------
>>> [1] 
>>> http://www.ovirt.org/documentation/install-guide/Installation_Guide/
>>> [2]
>>> 
>>> http://www.ovirt.org/develop/release-management/features/gluster/gdeploy-cockpit-integration/
>>> [3] http://www.ovirt.org/community/user-stories/users-and-providers/
>>> [4] http://www.ovirt.org/community/
>>> [5] http://lago.readthedocs.io/en/stable/
>>> [6] https://github.com/lago-project/lago-demo
>>> [7]
>>> http://community.redhat.com/blog/2013/08/testing-ovirt-3-3-with-nested-kvm/
>>> [8] http://lists.ovirt.org/mailman/listinfo/users
>>> [9] https://www.redhat.com/
>>> [10] https://red.ht/sig
>>> [11] https://redhat.com/trusted
>> 
>> _______________________________________________
>> Users mailing list
>> Users at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users