7:43 a.m.
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
4:27 p.m.
On Thu, Sep 15, 2016 at 3:43 PM, Nicolas Ecarnot <nicolas(a)ecarnot.net wrote:
On what device you attached it? Bridge? the physical nic?
I'm also witnessing frequent loss of packets.
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(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
5:32 a.m.
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Le 15/09/2016 à 23:27, Edward Haas a écrit :
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?
--
Nicolas ECARNOT
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<div class="moz-cite-prefix">Le 15/09/2016 à 23:27, Edward Haas a
écrit :<br>
</div>
<blockquote
cite="mid:CALmkdFQxxAC9PEvq0tN-B2by6WB7p+1ddPWFK-pGGXs7MeQKEg@mail.gmail.com"
type="cite">
<div dir="ltr"><br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Sep 15, 2016 at 3:43 PM,
Nicolas Ecarnot <span dir="ltr"><<a
moz-do-not-send="true" target="_blank"
href="mailto:nicolas@ecarnot.net">nicolas@ecarnot.net</a>></span>
wrote:<br>
<blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px
solid rgb(204,204,204);padding-left:1ex"
class="gmail_quote">Hello,<br>
<br>
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.<br>
<br>
For this first try, the bare-metal host is a Debian,
running KVM, and the virtual NICs are setup as macvtap in
VEPA mode.<br>
</blockquote>
<div><br>
On what device you attached it? Bridge? the physical nic?<br>
</div>
</div>
</div>
</div>
</blockquote>
<br>
On my physical host, ifconfig is showing the following devices :<br>
- lo, obviously<br>
- eth0, primary used<br>
- wlan0, not used, WIFI...<br>
- virbr0<br>
- virbr0-nic<br>
<br>
The last two devices were created when installing and playing with
the KVM Virtual Machine Manager.<br>
<br>
When trying to assign one of them to a VM, the only choices are :<br>
- NAT<br>
- eth0: macvtap<br>
- wlan0: macvtap<br>
- custom<br>
<br>
and the source mode can be chosen between :<br>
- Bridge<br>
- VEPA<br>
- Private<br>
- Passthrough<br>
<br>
My main goal is simplicity, and I'd rather use simple bridging, no
NAT, simple.<br>
<br>
What would be the simplest choice?<br>
<br>
<blockquote
cite="mid:CALmkdFQxxAC9PEvq0tN-B2by6WB7p+1ddPWFK-pGGXs7MeQKEg@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote">
<div> <br>
</div>
<blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px
solid rgb(204,204,204);padding-left:1ex"
class="gmail_quote">
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.<br>
</blockquote>
<blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px
solid rgb(204,204,204);padding-left:1ex"
class="gmail_quote">
I'm also witnessing frequent loss of packets.<br>
<br>
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.<br>
</blockquote>
<div><br>
By definition: <a moz-do-not-send="true"
href="http://virt.kernelnewbies.org/MacVTap">http://virt.ker...
<br>
</div>
<blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px
solid rgb(204,204,204);padding-left:1ex"
class="gmail_quote">
</blockquote>
<blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px
solid rgb(204,204,204);padding-left:1ex"
class="gmail_quote">
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.<br>
<br>
To you all (4) people who are playing with nested oVirt :<br>
- which is your preferred bare metal OS?<br>
- which is your preferred guest (first virt level) OS?<br>
- which network setups and modes are working best?<br>
<br>
Thank you.<span class="gmail-HOEnZb"><font
color="#888888"><br>
<br>
-- <br>
Nicolas ECARNOT<br>
______________________________<wbr>_________________<br>
Users mailing list<br>
<a moz-do-not-send="true" target="_blank"
href="mailto:Users@ovirt.org">Users@ovirt.org</a><br>
<a moz-do-not-send="true" target="_blank"
rel="noreferrer"
href="http://lists.ovirt.org/mailman/listinfo/users">http://...
</font></span></blockquote>
</div>
<br>
</div>
</div>
</blockquote>
<br>
<p><br>
</p>
<pre class="moz-signature" cols="72">--
Nicolas ECARNOT
</pre>
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1:21 p.m.
On Fri, Sep 16, 2016 at 1:32 PM, Nicolas Ecarnot <nicolas(a)ecarnot.net>
wrote:
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.
8:26 a.m.
On Mon, Sep 19, 2016 at 2:19 PM, Nicolas Ecarnot <nicolas(a)ecarnot.net>
wrote:
Lago[1].
Y.
[1] lago.readthedocs.org/en/latest/README.html
3189
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7 comments
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participants (3)
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Edward Haas -
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Yaniv Kaul