Re: [ovirt-users] Nested oVirt : Unofficial network recommendations wanted

2016-09-19 Thread Yaniv Kaul
On Sep 19, 2016 5:50 PM, "Nicolas Ecarnot"  wrote:
>
> Le 19/09/2016 à 15:26, Yaniv Kaul a écrit :
>>
>> Would you recommend a better suited solution for nested
virtualization?
>>
>>
>> Lago[1].
>> Y.
>>
>> [1] lago.readthedocs.org/en/latest/README.html
>> 
>
>
> Yanniv,
>
> I read your tweet some times ago about Lago.
> Is fedora the recommended OS to play with Lago?

Yes,  both my server and my laptop run F24 with Lago. Previously both were
F23.
Y.

>
> --
> Nicolas ECARNOT
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Re: [ovirt-users] Nested oVirt : Unofficial network recommendations wanted

2016-09-19 Thread Nicolas Ecarnot

Le 19/09/2016 à 15:26, Yaniv Kaul a écrit :

Would you recommend a better suited solution for nested virtualization?


Lago[1].
Y.

[1] lago.readthedocs.org/en/latest/README.html



Yanniv,

I read your tweet some times ago about Lago.
Is fedora the recommended OS to play with Lago?

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Re: [ovirt-users] Nested oVirt : Unofficial network recommendations wanted

2016-09-19 Thread Yaniv Kaul
On Mon, Sep 19, 2016 at 2:19 PM, Nicolas Ecarnot 
wrote:

> Le 16/09/2016 à 20:21, Edward Haas a écrit :
>
>> My main goal is simplicity, and I'd rather use simple bridging, no
>> NAT, simple.
>>
>> What would be the simplest choice?
>>
>>
>> With Virtual Machine Manager you can edit-connection details and create
>> bridges on the host that you can connect to.
>>
>
> Exact.
>
> I usually use an isolated network, that does not connect to the outside
>> world and is limited to the host. If I need it to access the outside
>> world, I can either connect one of the nics to the bridge created on the
>> host or just create another vnic that uses nat/macvtap.
>>
>
> I get that.
>
> Note that VMM is mainly focused on simple VM connectivity, using it for
>> nested virtualization is not simple and will require from you additional
>> effort.
>>
>
> OK.
>
> Would you recommend a better suited solution for nested virtualization?


Lago[1].
Y.

[1] lago.readthedocs.org/en/latest/README.html

>
>
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Re: [ovirt-users] Nested oVirt : Unofficial network recommendations wanted

2016-09-19 Thread Nicolas Ecarnot

Le 16/09/2016 à 20:21, Edward Haas a écrit :

My main goal is simplicity, and I'd rather use simple bridging, no
NAT, simple.

What would be the simplest choice?


With Virtual Machine Manager you can edit-connection details and create
bridges on the host that you can connect to.


Exact.


I usually use an isolated network, that does not connect to the outside
world and is limited to the host. If I need it to access the outside
world, I can either connect one of the nics to the bridge created on the
host or just create another vnic that uses nat/macvtap.


I get that.


Note that VMM is mainly focused on simple VM connectivity, using it for
nested virtualization is not simple and will require from you additional
effort.


OK.

Would you recommend a better suited solution for nested virtualization?

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Re: [ovirt-users] Nested oVirt : Unofficial network recommendations wanted

2016-09-16 Thread Edward Haas
On Fri, Sep 16, 2016 at 1:32 PM, Nicolas Ecarnot 
wrote:

> Le 15/09/2016 à 23:27, Edward Haas a écrit :
>
>
>
> On Thu, Sep 15, 2016 at 3:43 PM, Nicolas Ecarnot 
> wrote:
>
>> Hello,
>>
>> I'm trying to setup a nested oVirt for the first time, and according to
>> what I read around and experience, some special network settings have to be
>> chosen.
>>
>> For this first try, the bare-metal host is a Debian, running KVM, and the
>> virtual NICs are setup as macvtap in VEPA mode.
>>
>
> On what device you attached it? Bridge? the physical nic?
>
>
> On my physical host, ifconfig is showing the following devices :
> - lo, obviously
> - eth0, primary used
> - wlan0, not used, WIFI...
> - virbr0
> - virbr0-nic
>
> The last two devices were created when installing and playing with the KVM
> Virtual Machine Manager.
>
> When trying to assign one of them to a VM, the only choices are :
> - NAT
> - eth0: macvtap
> - wlan0: macvtap
> - custom
>
> and the source mode can be chosen between :
> - Bridge
> - VEPA
> - Private
> - Passthrough
>
> My main goal is simplicity, and I'd rather use simple bridging, no NAT,
> simple.
>
> What would be the simplest choice?
>

With Virtual Machine Manager you can edit-connection details and create
bridges on the host that you can connect to.
I usually use an isolated network, that does not connect to the outside
world and is limited to the host. If I need it to access the outside world,
I can either connect one of the nics to the bridge created on the host or
just create another vnic that uses nat/macvtap.
Note that VMM is mainly focused on simple VM connectivity, using it for
nested virtualization is not simple and will require from you additional
effort.


>
>
>> I'm not up to date with macvtap, but I think I understood that one of its
>> limit was that no packet could be exchanged between the host and the
>> guests. So far, this is leading me to access my own local VMs from another
>> host. Too bad.
>>
>
> I'm also witnessing frequent loss of packets.
>>
>> So far, I'm also seeing that guests can not ping each others, so I'm not
>> going further before having solved these basic issues.
>>
>
> By definition: http://virt.kernelnewbies.org/MacVTap
>
>
>>
>
> I'm remembering the good old times of lots of bridges where my VMs could
>> be reached by anyone (this was desired), but virt manager is not offering
>> me this choice. I also would like to avoid NAT for other reasons.
>>
>> To you all (4) people who are playing with nested oVirt :
>> - which is your preferred bare metal OS?
>> - which is your preferred guest (first virt level) OS?
>> - which network setups and modes are working best?
>>
>> Thank you.
>>
>> --
>> Nicolas ECARNOT
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>
>
>
> --
> Nicolas ECARNOT
>
>
> ___
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>
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Re: [ovirt-users] Nested oVirt : Unofficial network recommendations wanted

2016-09-16 Thread Nicolas Ecarnot

Le 15/09/2016 à 23:27, Edward Haas a écrit :



On Thu, Sep 15, 2016 at 3:43 PM, Nicolas Ecarnot > wrote:


Hello,

I'm trying to setup a nested oVirt for the first time, and
according to what I read around and experience, some special
network settings have to be chosen.

For this first try, the bare-metal host is a Debian, running KVM,
and the virtual NICs are setup as macvtap in VEPA mode.


On what device you attached it? Bridge? the physical nic?


On my physical host, ifconfig is showing the following devices :
- lo, obviously
- eth0, primary used
- wlan0, not used, WIFI...
- virbr0
- virbr0-nic

The last two devices were created when installing and playing with the 
KVM Virtual Machine Manager.


When trying to assign one of them to a VM, the only choices are :
- NAT
- eth0: macvtap
- wlan0: macvtap
- custom

and the source mode can be chosen between :
- Bridge
- VEPA
- Private
- Passthrough

My main goal is simplicity, and I'd rather use simple bridging, no NAT, 
simple.


What would be the simplest choice?



I'm not up to date with macvtap, but I think I understood that one
of its limit was that no packet could be exchanged between the
host and the guests. So far, this is leading me to access my own
local VMs from another host. Too bad.

I'm also witnessing frequent loss of packets.

So far, I'm also seeing that guests can not ping each others, so
I'm not going further before having solved these basic issues.


By definition: http://virt.kernelnewbies.org/MacVTap

I'm remembering the good old times of lots of bridges where my VMs
could be reached by anyone (this was desired), but virt manager is
not offering me this choice. I also would like to avoid NAT for
other reasons.

To you all (4) people who are playing with nested oVirt :
- which is your preferred bare metal OS?
- which is your preferred guest (first virt level) OS?
- which network setups and modes are working best?

Thank you.

-- 
Nicolas ECARNOT

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Re: [ovirt-users] Nested oVirt : Unofficial network recommendations wanted

2016-09-15 Thread Edward Haas
On Thu, Sep 15, 2016 at 3:43 PM, Nicolas Ecarnot 
wrote:

> Hello,
>
> I'm trying to setup a nested oVirt for the first time, and according to
> what I read around and experience, some special network settings have to be
> chosen.
>
> For this first try, the bare-metal host is a Debian, running KVM, and the
> virtual NICs are setup as macvtap in VEPA mode.
>

On what device you attached it? Bridge? the physical nic?


> I'm not up to date with macvtap, but I think I understood that one of its
> limit was that no packet could be exchanged between the host and the
> guests. So far, this is leading me to access my own local VMs from another
> host. Too bad.
>

I'm also witnessing frequent loss of packets.
>
> So far, I'm also seeing that guests can not ping each others, so I'm not
> going further before having solved these basic issues.
>

By definition: http://virt.kernelnewbies.org/MacVTap


>

I'm remembering the good old times of lots of bridges where my VMs could be
> reached by anyone (this was desired), but virt manager is not offering me
> this choice. I also would like to avoid NAT for other reasons.
>
> To you all (4) people who are playing with nested oVirt :
> - which is your preferred bare metal OS?
> - which is your preferred guest (first virt level) OS?
> - which network setups and modes are working best?
>
> Thank you.
>
> --
> Nicolas ECARNOT
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
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[ovirt-users] Nested oVirt : Unofficial network recommendations wanted

2016-09-15 Thread Nicolas Ecarnot

Hello,

I'm trying to setup a nested oVirt for the first time, and according to 
what I read around and experience, some special network settings have to 
be chosen.


For this first try, the bare-metal host is a Debian, running KVM, and 
the virtual NICs are setup as macvtap in VEPA mode.
I'm not up to date with macvtap, but I think I understood that one of 
its limit was that no packet could be exchanged between the host and the 
guests. So far, this is leading me to access my own local VMs from 
another host. Too bad.


I'm also witnessing frequent loss of packets.

So far, I'm also seeing that guests can not ping each others, so I'm not 
going further before having solved these basic issues.


I'm remembering the good old times of lots of bridges where my VMs could 
be reached by anyone (this was desired), but virt manager is not 
offering me this choice. I also would like to avoid NAT for other reasons.


To you all (4) people who are playing with nested oVirt :
- which is your preferred bare metal OS?
- which is your preferred guest (first virt level) OS?
- which network setups and modes are working best?

Thank you.

--
Nicolas ECARNOT
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