Re: [ovirt-users] ovirt-hosted-engine-setup and single machine install

[Roman Mohr]

Hi Johan,

On Mon, Nov 23, 2015 at 9:39 PM, Johan Vermeulen 
wrote:

> Hello All,
>
> after configuring a first setup, based on the quick start guide, I'm now
> looking
> at the hosted-engine setup.
> My question is: after I do the hosted-engine-setup, how do I setup vm's on
> the same
> machine that hosts the now-virtualized engine?
>

You can add this host like any other host. You will then also see the
hosted engine VM as a special VM in the VMs tab of the web admin portal.
Just make sure that your VM can reach the physical host.


> Greetings, J.
>
> ___
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>
>
Best Regards,
Roman
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Re: [ovirt-users] ovirt-hosted-engine-setup and single machine install

[Simone Tiraboschi]

On Tue, Nov 24, 2015 at 9:05 AM, Roman Mohr  wrote:

> Hi Johan,
>
> On Mon, Nov 23, 2015 at 9:39 PM, Johan Vermeulen 
> wrote:
>
>> Hello All,
>>
>> after configuring a first setup, based on the quick start guide, I'm now
>> looking
>> at the hosted-engine setup.
>> My question is: after I do the hosted-engine-setup, how do I setup vm's
>> on the same
>> machine that hosts the now-virtualized engine?
>>
>
> You can add this host like any other host. You will then also see the
> hosted engine VM as a special VM in the VMs tab of the web admin portal.
> Just make sure that your VM can reach the physical host.
>

Just an addition: your first host will be automatically added to your
engine so you don't have to do anything special on that.
hosted-engine on the other side, is using a dedicated storage domain for
the engine VM and you cannot use it for other VMs so you still need to add
a second storage domain for regular VMs.

Take care that loopback mounting NFS could lead to deadlocks:
 https://lwn.net/Articles/595652/
On a single host with the storage on the same host iSCSI seams more
reliable.


>
>> Greetings, J.
>>
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
> Best Regards,
> Roman
>
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
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Re: [ovirt-users] ovirt-hosted-engine-setup and single machine install

[Gianluca Cecchi]

On Tue, Nov 24, 2015 at 9:39 AM, Simone Tiraboschi wrote:

>
>
>>
> Just an addition: your first host will be automatically added to your
> engine so you don't have to do anything special on that.
> hosted-engine on the other side, is using a dedicated storage domain for
> the engine VM and you cannot use it for other VMs so you still need to add
> a second storage domain for regular VMs.
>
> Take care that loopback mounting NFS could lead to deadlocks:
>  https://lwn.net/Articles/595652/
> On a single host with the storage on the same host iSCSI seams more
> reliable.
>
>
Take in mind also that in 3.6.0 there is a bug so that you don't actually
see your engine vm inside admin portal and also you cannot import it. To be
fixed in 3.6.1. See:
https://bugzilla.redhat.com/show_bug.cgi?id=1269768

Also, if you plan to have a single host and you use NFS for storage domains
on your single host, you have to manually change
/usr/lib/systemd/system/ovirt-ha-broker.service

so that in the [Unit] section it looks like:

[Unit]
Description=oVirt Hosted Engine High Availability Communications Broker
After=nfs-server.service

otherwise ovirt-ha-broker will fail to start and you have to manually start
it after boot and nfs service has come up.

HIH,
Gianluca
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Re: [ovirt-users] ovirt-hosted-engine-setup and single machine install

[Johan Vermeulen]

Hello Roman and Simone,

thanks for pointing me in the right direction.
I just messed up the first attempt by selection the wrong interface during
the install.
But I think I get the overall picture.

Greetings, J.

2015-11-24 9:39 GMT+01:00 Simone Tiraboschi :

>
>
> On Tue, Nov 24, 2015 at 9:05 AM, Roman Mohr  wrote:
>
>> Hi Johan,
>>
>> On Mon, Nov 23, 2015 at 9:39 PM, Johan Vermeulen 
>> wrote:
>>
>>> Hello All,
>>>
>>> after configuring a first setup, based on the quick start guide, I'm now
>>> looking
>>> at the hosted-engine setup.
>>> My question is: after I do the hosted-engine-setup, how do I setup vm's
>>> on the same
>>> machine that hosts the now-virtualized engine?
>>>
>>
>> You can add this host like any other host. You will then also see the
>> hosted engine VM as a special VM in the VMs tab of the web admin portal.
>> Just make sure that your VM can reach the physical host.
>>
>
> Just an addition: your first host will be automatically added to your
> engine so you don't have to do anything special on that.
> hosted-engine on the other side, is using a dedicated storage domain for
> the engine VM and you cannot use it for other VMs so you still need to add
> a second storage domain for regular VMs.
>
> Take care that loopback mounting NFS could lead to deadlocks:
>  https://lwn.net/Articles/595652/
> On a single host with the storage on the same host iSCSI seams more
> reliable.
>
>
>>
>>> Greetings, J.
>>>
>>> ___
>>> Users mailing list
>>> Users@ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>>>
>> Best Regards,
>> Roman
>>
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>
___
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