3:15 a.m.
Good morning,
I would like to kindly ask you a question about the feasibility of defining a
point-to-point interconnection between three ovirt nodes.
Initially with the idea of optimizing the direct communications between the nodes and
especially the gluster communications, and so it would seem quite easy, then evaluating a
more complex configuration, assuming to create an overlay L2 network on the three L3
point-to-point, using techniques like geneve, of which at the moment I have no mastery.
If the direct routing of three nodes to interconnect the public network with the private
overlay network was not easily doable, we could leave the private overlay network isolated
from the outside world and connect the VM hosted engine directly to the two networks with
two adapters.
This layout with direct interconnection of the nodes without switches and a shared L2
overlay network between the nodes may in future be contemplated in future releases of your
HCI solution?
Thank you for your attention, have a nice day!
Stefano Zappa.
[cid:609f1f14-f74e-489f-b86d-08647efc6d1c]
Stefano Zappa
IT Specialist CAE - TT-3
Industrie Saleri Italo S.p.A.
Phone: +39 0308250480
Fax: +39 0308250466
This message contains confidential information and is intended only for users(a)ovirt.org,
infra(a)ovirt.org, devel(a)ovirt.org. If you are not users(a)ovirt.org, infra(a)ovirt.org,
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arrive late or incomplete, or contain viruses. Stefano Zappa therefore does not accept
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version.
PRIVACY INFORMATION ART. 13 EU REG. 2016/679
We inform you that the personal data contained in the present and subsequent electronic
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The provision of personal data is not mandatory. However, failure to provide them
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With regard to these data, is allowed the exercise of the rights set out in art. 13 and
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2:52 a.m.
New subject: [ovirt-users] oVirt HCI point-to-point interconnection
Simone, Sahina, can you please have a look?
2018-06-07 9:59 GMT+02:00 Stefano Zappa <Stefano.Zappa(a)saleri.it>:
Good morning,
I would like to kindly ask you a question about the feasibility of
defining a point-to-point interconnection between three ovirt nodes.
Initially with the idea of optimizing the direct communications between
the nodes and especially the gluster communications, and so it would seem
quite easy, then evaluating a more complex configuration, assuming to
create an overlay L2 network on the three L3 point-to-point, using
techniques like geneve, of which at the moment I have no mastery.
If the direct routing of three nodes to interconnect the public network
with the private overlay network was not easily doable, we could leave the
private overlay network isolated from the outside world and connect the VM
hosted engine directly to the two networks with two adapters.
This layout with direct interconnection of the nodes without switches and
a shared L2 overlay network between the nodes may in future be contemplated
in future releases of your HCI solution?
Thank you for your attention, have a nice day!
Stefano Zappa.
Stefano Zappa
IT Specialist CAE - TT-3
Industrie Saleri Italo S.p.A.
Phone: +39 0308250480
Fax: +39 0308250466
This message contains confidential information and is intended only for
users(a)ovirt.org, infra(a)ovirt.org, devel(a)ovirt.org. If you are not
users(a)ovirt.org, infra(a)ovirt.org, devel(a)ovirt.org you should not
disseminate, distribute or copy this e-mail. Please notify
Stefano.Zappa(a)saleri.it immediately by e-mail if you have received this
e-mail by mistake and delete this e-mail from your system. E-mail
transmission cannot be guaranteed to be secure or error-free as information
could be intercepted, corrupted, lost, destroyed, arrive late or
incomplete, or contain viruses. Stefano Zappa therefore does not accept
liability for any errors or omissions in the contents of this message,
which arise as a result of e-mail transmission. If verification is required
please request a hard-copy version.
*PRIVACY INFORMATION ART. 13 EU REG. 2016/679*
We inform you that the personal data contained in the present and
subsequent electronic communications will be processed in compliance with
the EU Regulation 2016/679, for the purpose of and only for the time
necessary to allow the sender to carry out the activities connected to the
existing commercial relationships.
The provision of personal data is not mandatory. However, failure to
provide them determines the impossibility of achieving the aforementioned
purpose.
With regard to these data, is allowed the exercise of the rights set out
in art. 13 and from the articles from 15 to 22 of EU Regulation 2016/679
and in particular the right to request the access to, updating,
rectification and erasure of your personal data, as well as the right to
object to processing and to lodge a complaint with the Supervisory
Authority, by sending an e-mail to privacy(a)saleri.it.
Data Controller of your personal data is Industrie Saleri Italo S.p.a.,
with registered office in via Ruca, 406 - 25065 Lumezzane (BS).
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--
SANDRO BONAZZOLA
ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV
Red Hat EMEA <https://www.redhat.com/>
sbonazzo(a)redhat.com
<https://red.ht/sig>
3:15 a.m.
New subject: [ovirt-users] oVirt HCI point-to-point interconnection
The point to point interconnect is something we have not explored - I think
this limits the solution from scaling out to more nodes.
On Wed, Jun 27, 2018 at 1:22 PM, Sandro Bonazzola <sbonazzo(a)redhat.com>
wrote:
Simone, Sahina, can you please have a look?
2018-06-07 9:59 GMT+02:00 Stefano Zappa <Stefano.Zappa(a)saleri.it>:
> Good morning,
> I would like to kindly ask you a question about the feasibility of
> defining a point-to-point interconnection between three ovirt nodes.
>
> Initially with the idea of optimizing the direct communications between
> the nodes and especially the gluster communications, and so it would seem
> quite easy, then evaluating a more complex configuration, assuming to
> create an overlay L2 network on the three L3 point-to-point, using
> techniques like geneve, of which at the moment I have no mastery.
>
> If the direct routing of three nodes to interconnect the public network
> with the private overlay network was not easily doable, we could leave the
> private overlay network isolated from the outside world and connect the VM
> hosted engine directly to the two networks with two adapters.
>
> This layout with direct interconnection of the nodes without switches and
> a shared L2 overlay network between the nodes may in future be contemplated
> in future releases of your HCI solution?
>
> Thank you for your attention, have a nice day!
>
> Stefano Zappa.
>
>
>
>
>
>
> Stefano Zappa
>
> IT Specialist CAE - TT-3
>
>
>
> Industrie Saleri Italo S.p.A.
>
> Phone: +39 0308250480
> Fax: +39 0308250466
>
>
>
> This message contains confidential information and is intended only for
> users(a)ovirt.org, infra(a)ovirt.org, devel(a)ovirt.org. If you are not
> users(a)ovirt.org, infra(a)ovirt.org, devel(a)ovirt.org you should not
> disseminate, distribute or copy this e-mail. Please notify
> Stefano.Zappa(a)saleri.it immediately by e-mail if you have received this
> e-mail by mistake and delete this e-mail from your system. E-mail
> transmission cannot be guaranteed to be secure or error-free as information
> could be intercepted, corrupted, lost, destroyed, arrive late or
> incomplete, or contain viruses. Stefano Zappa therefore does not accept
> liability for any errors or omissions in the contents of this message,
> which arise as a result of e-mail transmission. If verification is required
> please request a hard-copy version.
>
> *PRIVACY INFORMATION ART. 13 EU REG. 2016/679*
> We inform you that the personal data contained in the present and
> subsequent electronic communications will be processed in compliance with
> the EU Regulation 2016/679, for the purpose of and only for the time
> necessary to allow the sender to carry out the activities connected to the
> existing commercial relationships.
> The provision of personal data is not mandatory. However, failure to
> provide them determines the impossibility of achieving the aforementioned
> purpose.
> With regard to these data, is allowed the exercise of the rights set out
> in art. 13 and from the articles from 15 to 22 of EU Regulation 2016/679
> and in particular the right to request the access to, updating,
> rectification and erasure of your personal data, as well as the right to
> object to processing and to lodge a complaint with the Supervisory
> Authority, by sending an e-mail to privacy(a)saleri.it.
> Data Controller of your personal data is Industrie Saleri Italo S.p.a.,
> with registered office in via Ruca, 406 - 25065 Lumezzane
>
<https://maps.google.com/?q=via+Ruca,+406+-+25065+Lumezzane&entry=gmai...
> (BS).
>
>
> _______________________________________________
> Users mailing list -- users(a)ovirt.org
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> y/about/community-guidelines/
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> es/list/users(a)ovirt.org/message/WE2SAB6IGVLFSLBK7334PMH2O4ADP62Z/
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--
SANDRO BONAZZOLA
ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV
Red Hat EMEA <https://www.redhat.com/>
sbonazzo(a)redhat.com
<https://red.ht/sig>
3:26 a.m.
New subject: [ovirt-users] oVirt HCI point-to-point interconnection
The final purpose is strictly targeted to your HCI solution with 3-node gluster
replication.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
This message contains confidential information and is intended only for sabose(a)redhat.com,
sbonazzo(a)redhat.com, stirabos(a)redhat.com, users(a)ovirt.org, devel(a)ovirt.org. If you are not
sabose(a)redhat.com, sbonazzo(a)redhat.com, stirabos(a)redhat.com, users(a)ovirt.org,
devel(a)ovirt.org you should not disseminate, distribute or copy this e-mail. Please notify
Stefano.Zappa(a)saleri.it immediately by e-mail if you have received this e-mail by mistake
and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be
secure or error-free as information could be intercepted, corrupted, lost, destroyed,
arrive late or incomplete, or contain viruses. Stefano Zappa therefore does not accept
liability for any errors or omissions in the contents of this message, which arise as a
result of e-mail transmission. If verification is required please request a hard-copy
version.
________________________________________
Da: Sahina Bose <sabose(a)redhat.com>
Inviato: mercoledì 27 giugno 2018 10:15
A: Sandro Bonazzola
Cc: Stefano Zappa; Simone Tiraboschi; users(a)ovirt.org; devel(a)ovirt.org
Oggetto: Re: [ovirt-users] oVirt HCI point-to-point interconnection
The point to point interconnect is something we have not explored - I think this limits
the solution from scaling out to more nodes.
On Wed, Jun 27, 2018 at 1:22 PM, Sandro Bonazzola
<sbonazzo@redhat.com<mailto:sbonazzo@redhat.com>> wrote:
Simone, Sahina, can you please have a look?
2018-06-07 9:59 GMT+02:00 Stefano Zappa
<Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it>>:
Good morning,
I would like to kindly ask you a question about the feasibility of defining a
point-to-point interconnection between three ovirt nodes.
Initially with the idea of optimizing the direct communications between the nodes and
especially the gluster communications, and so it would seem quite easy, then evaluating a
more complex configuration, assuming to create an overlay L2 network on the three L3
point-to-point, using techniques like geneve, of which at the moment I have no mastery.
If the direct routing of three nodes to interconnect the public network with the private
overlay network was not easily doable, we could leave the private overlay network isolated
from the outside world and connect the VM hosted engine directly to the two networks with
two adapters.
This layout with direct interconnection of the nodes without switches and a shared L2
overlay network between the nodes may in future be contemplated in future releases of your
HCI solution?
Thank you for your attention, have a nice day!
Stefano Zappa.
[cid:609f1f14-f74e-489f-b86d-08647efc6d1c]
Stefano Zappa
IT Specialist CAE - TT-3
Industrie Saleri Italo S.p.A.
Phone: +39 0308250480
Fax: +39 0308250466
This message contains confidential information and is intended only for
users@ovirt.org<mailto:users@ovirt.org>,
infra@ovirt.org<mailto:infra@ovirt.org>,
devel@ovirt.org<mailto:devel@ovirt.org>. If you are not
users@ovirt.org<mailto:users@ovirt.org>,
infra@ovirt.org<mailto:infra@ovirt.org>,
devel@ovirt.org<mailto:devel@ovirt.org> you should not disseminate, distribute or
copy this e-mail. Please notify
Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it> immediately by e-mail if you
have received this e-mail by mistake and delete this e-mail from your system. E-mail
transmission cannot be guaranteed to be secure or error-free as information could be
intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses.
Stefano Zappa therefore does not accept liability for any errors or omissions in the
contents of this message, which arise as a result of e-mail transmission. If verification
is required please request a hard-copy version.
PRIVACY INFORMATION ART. 13 EU REG. 2016/679
We inform you that the personal data contained in the present and subsequent electronic
communications will be processed in compliance with the EU Regulation 2016/679, for the
purpose of and only for the time necessary to allow the sender to carry out the activities
connected to the existing commercial relationships.
The provision of personal data is not mandatory. However, failure to provide them
determines the impossibility of achieving the aforementioned purpose.
With regard to these data, is allowed the exercise of the rights set out in art. 13 and
from the articles from 15 to 22 of EU Regulation 2016/679 and in particular the right to
request the access to, updating, rectification and erasure of your personal data, as well
as the right to object to processing and to lodge a complaint with the Supervisory
Authority, by sending an e-mail to privacy@saleri.it<mailto:privacy@saleri.it>.
Data Controller of your personal data is Industrie Saleri Italo S.p.a., with registered
office in via Ruca, 406 - 25065
Lumezzane<https://urlsand.esvalabs.com/?u=https%3A%2F%2Fmaps.google.co...
(BS).
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Red Hat EMEA<https://www.redhat.com/>
sbonazzo@redhat.com<mailto:sbonazzo@redhat.com>
[https://www.redhat.com/files/brand/email/sig-redhat.png]<https://urlsa...
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9:20 a.m.
New subject: [ovirt-users] oVirt HCI point-to-point interconnection
On Wed, Jun 27, 2018 at 11:26 AM, Stefano Zappa <Stefano.Zappa(a)saleri.it>
wrote:
The final purpose is strictly targeted to your HCI solution with
3-node
gluster replication.
Can you explain to me what the benefit is? You need a switch anyway (for
uplink), so the 'cost saving' is that you can use a 4 port (?) switch and
do not need 6 ports?
Y.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
This message contains confidential information and is intended only for
sabose(a)redhat.com, sbonazzo(a)redhat.com, stirabos(a)redhat.com,
users(a)ovirt.org, devel(a)ovirt.org. If you are not sabose(a)redhat.com,
sbonazzo(a)redhat.com, stirabos(a)redhat.com, users(a)ovirt.org, devel(a)ovirt.org
you should not disseminate, distribute or copy this e-mail. Please notify
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e-mail by mistake and delete this e-mail from your system. E-mail
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could be intercepted, corrupted, lost, destroyed, arrive late or
incomplete, or contain viruses. Stefano Zappa therefore does not accept
liability for any errors or omissions in the contents of this message,
which arise as a result of e-mail transmission. If verification is required
please request a hard-copy version.
________________________________________
Da: Sahina Bose <sabose(a)redhat.com>
Inviato: mercoledì 27 giugno 2018 10:15
A: Sandro Bonazzola
Cc: Stefano Zappa; Simone Tiraboschi; users(a)ovirt.org; devel(a)ovirt.org
Oggetto: Re: [ovirt-users] oVirt HCI point-to-point interconnection
The point to point interconnect is something we have not explored - I
think this limits the solution from scaling out to more nodes.
On Wed, Jun 27, 2018 at 1:22 PM, Sandro Bonazzola <sbonazzo(a)redhat.com
<mailto:sbonazzo@redhat.com>> wrote:
Simone, Sahina, can you please have a look?
2018-06-07 9:59 GMT+02:00 Stefano Zappa <Stefano.Zappa(a)saleri.it<mailto:
Stefano.Zappa(a)saleri.it>>:
Good morning,
I would like to kindly ask you a question about the feasibility of
defining a point-to-point interconnection between three ovirt nodes.
Initially with the idea of optimizing the direct communications between
the nodes and especially the gluster communications, and so it would seem
quite easy, then evaluating a more complex configuration, assuming to
create an overlay L2 network on the three L3 point-to-point, using
techniques like geneve, of which at the moment I have no mastery.
If the direct routing of three nodes to interconnect the public network
with the private overlay network was not easily doable, we could leave the
private overlay network isolated from the outside world and connect the VM
hosted engine directly to the two networks with two adapters.
This layout with direct interconnection of the nodes without switches and
a shared L2 overlay network between the nodes may in future be contemplated
in future releases of your HCI solution?
Thank you for your attention, have a nice day!
Stefano Zappa.
[cid:609f1f14-f74e-489f-b86d-08647efc6d1c]
Stefano Zappa
IT Specialist CAE - TT-3
Industrie Saleri Italo S.p.A.
Phone: +39 0308250480
Fax: +39 0308250466
This message contains confidential information and is intended only for
users@ovirt.org<mailto:users@ovirt.org>, infra@ovirt.org<mailto:infra@
ovirt.org>, devel@ovirt.org<mailto:devel@ovirt.org>. If you are not
users@ovirt.org<mailto:users@ovirt.org>, infra@ovirt.org<mailto:infra@
ovirt.org>, devel@ovirt.org<mailto:devel@ovirt.org> you should not
disseminate, distribute or copy this e-mail. Please notify
Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it> immediately by
e-mail if you have received this e-mail by mistake and delete this e-mail
from your system. E-mail transmission cannot be guaranteed to be secure or
error-free as information could be intercepted, corrupted, lost, destroyed,
arrive late or incomplete, or contain viruses. Stefano Zappa therefore does
not accept liability for any errors or omissions in the contents of this
message, which arise as a result of e-mail transmission. If verification is
required please request a hard-copy version.
PRIVACY INFORMATION ART. 13 EU REG. 2016/679
We inform you that the personal data contained in the present and
subsequent electronic communications will be processed in compliance with
the EU Regulation 2016/679, for the purpose of and only for the time
necessary to allow the sender to carry out the activities connected to the
existing commercial relationships.
The provision of personal data is not mandatory. However, failure to
provide them determines the impossibility of achieving the aforementioned
purpose.
With regard to these data, is allowed the exercise of the rights set out
in art. 13 and from the articles from 15 to 22 of EU Regulation 2016/679
and in particular the right to request the access to, updating,
rectification and erasure of your personal data, as well as the right to
object to processing and to lodge a complaint with the Supervisory
Authority, by sending an e-mail to privacy@saleri.it<mailto:priva
cy(a)saleri.it>.
Data Controller of your personal data is Industrie Saleri Italo S.p.a.,
with registered office in via Ruca, 406 - 25065 Lumezzane<https://urlsand.
esvalabs.com/?u=https%3A%2F%2Fmaps.google.com%2F%3Fq%
3Dvia%2BRuca%2C%2B406%2B-%2B25065%2BLumezzane%26entry%
3Dgmail%26source%3Dg&e=4e49d9fc&h=605049b1&f=n&p=y> (BS).
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ASSOCIATE MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV
Red Hat EMEA<https://www.redhat.com/>
sbonazzo@redhat.com<mailto:sbonazzo@redhat.com>
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3:42 a.m.
New subject: [ovirt-users] oVirt HCI point-to-point interconnection
Hi Yaniv,
no, the final purpose is not to save a couple of ports.
The benefit is the trend to convergence and consolidation of the networking, as already
done for the storage.
The external interconnection is a critical element of the HCI solution, a configuration
without switches would give more soundness and more independence.
If we think about HCI as the transition of IT infrastructure from hardware-defined to
software-defined, the first step was virtualization of the servers, the second step was
storage virtualization, the third step will be virtualization of networking.
Of course this also has an economic benefit, reduce the total cost of ownership and
traditional data-center inefficiencies.
We suppose a very traditional and simple external uplink, we can use the interfaces
integrated into the motherboard.
This will not be critical for the integrity of the our HCI solution, this will not require
broad bandwidth and low latency, this will be used exclusively to interconnect the
solution with the outside world, then with a traditional ethernet switch.
We suppose to give more attention to the point-to-point interconnection of the three
nodes, using 100 or 200 GbE cards for direct interconnection without switches.
The hypothetical purchase of these 3 cards will not be cheaper, sure, but it will be
twenty times less than introducing expensive switches that will certainly have more ports
than necessary.
Thanks for your attention,
Stefano.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
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Da: Yaniv Kaul <ykaul(a)redhat.com>
Inviato: mercoledì 27 giugno 2018 16:20
A: Stefano Zappa
Cc: Sahina Bose; Sandro Bonazzola; devel(a)ovirt.org; users(a)ovirt.org
Oggetto: Re: [ovirt-devel] Re: [ovirt-users] oVirt HCI point-to-point interconnection
On Wed, Jun 27, 2018 at 11:26 AM, Stefano Zappa
<Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it>> wrote:
The final purpose is strictly targeted to your HCI solution with 3-node gluster
replication.
Can you explain to me what the benefit is? You need a switch anyway (for uplink), so the
'cost saving' is that you can use a 4 port (?) switch and do not need 6 ports?
Y.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
This message contains confidential information and is intended only for
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________________________________________
Da: Sahina Bose <sabose@redhat.com<mailto:sabose@redhat.com>>
Inviato: mercoledì 27 giugno 2018 10:15
A: Sandro Bonazzola
Cc: Stefano Zappa; Simone Tiraboschi; users@ovirt.org<mailto:users@ovirt.org>;
devel@ovirt.org<mailto:devel@ovirt.org>
Oggetto: Re: [ovirt-users] oVirt HCI point-to-point interconnection
The point to point interconnect is something we have not explored - I think this limits
the solution from scaling out to more nodes.
On Wed, Jun 27, 2018 at 1:22 PM, Sandro Bonazzola
<sbonazzo@redhat.com<mailto:sbonazzo@redhat.com><mailto:sbonazzo@redhat.com<mailto:sbonazzo@redhat.com>>>
wrote:
Simone, Sahina, can you please have a look?
2018-06-07 9:59 GMT+02:00 Stefano Zappa
<Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it><mailto:Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it>>>:
Good morning,
I would like to kindly ask you a question about the feasibility of defining a
point-to-point interconnection between three ovirt nodes.
Initially with the idea of optimizing the direct communications between the nodes and
especially the gluster communications, and so it would seem quite easy, then evaluating a
more complex configuration, assuming to create an overlay L2 network on the three L3
point-to-point, using techniques like geneve, of which at the moment I have no mastery.
If the direct routing of three nodes to interconnect the public network with the private
overlay network was not easily doable, we could leave the private overlay network isolated
from the outside world and connect the VM hosted engine directly to the two networks with
two adapters.
This layout with direct interconnection of the nodes without switches and a shared L2
overlay network between the nodes may in future be contemplated in future releases of your
HCI solution?
Thank you for your attention, have a nice day!
Stefano Zappa.
[cid:609f1f14-f74e-489f-b86d-08647efc6d1c]
Stefano Zappa
IT Specialist CAE - TT-3
Industrie Saleri Italo S.p.A.
Phone: +39 0308250480
Fax: +39 0308250466
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2:34 p.m.
New subject: [ovirt-users] Re: Re: oVirt HCI point-to-point interconnection
Hi,
Network virtualization is already here and widely used. I am still not sure
what is the gain of this approach. You can do the same with VxLANs or
Geneve. And how do you scale this? Is it only for 3 node clusters?
Alex
On Thu, Jun 28, 2018, 11:47 Stefano Zappa <Stefano.Zappa(a)saleri.it> wrote:
Hi Yaniv,
no, the final purpose is not to save a couple of ports.
The benefit is the trend to convergence and consolidation of the
networking, as already done for the storage.
The external interconnection is a critical element of the HCI solution, a
configuration without switches would give more soundness and more
independence.
If we think about HCI as the transition of IT infrastructure from
hardware-defined to software-defined, the first step was virtualization of
the servers, the second step was storage virtualization, the third step
will be virtualization of networking.
Of course this also has an economic benefit, reduce the total cost of
ownership and traditional data-center inefficiencies.
We suppose a very traditional and simple external uplink, we can use the
interfaces integrated into the motherboard.
This will not be critical for the integrity of the our HCI solution, this
will not require broad bandwidth and low latency, this will be used
exclusively to interconnect the solution with the outside world, then with
a traditional ethernet switch.
We suppose to give more attention to the point-to-point interconnection of
the three nodes, using 100 or 200 GbE cards for direct interconnection
without switches.
The hypothetical purchase of these 3 cards will not be cheaper, sure, but
it will be twenty times less than introducing expensive switches that will
certainly have more ports than necessary.
Thanks for your attention,
Stefano.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
This message contains confidential information and is intended only for
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________________________________________
Da: Yaniv Kaul <ykaul(a)redhat.com>
Inviato: mercoledì 27 giugno 2018 16:20
A: Stefano Zappa
Cc: Sahina Bose; Sandro Bonazzola; devel(a)ovirt.org; users(a)ovirt.org
Oggetto: Re: [ovirt-devel] Re: [ovirt-users] oVirt HCI point-to-point
interconnection
On Wed, Jun 27, 2018 at 11:26 AM, Stefano Zappa <Stefano.Zappa(a)saleri.it
<mailto:Stefano.Zappa@saleri.it>> wrote:
The final purpose is strictly targeted to your HCI solution with 3-node
gluster replication.
Can you explain to me what the benefit is? You need a switch anyway (for
uplink), so the 'cost saving' is that you can use a 4 port (?) switch and
do not need 6 ports?
Y.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
This message contains confidential information and is intended only for
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________________________________________
Da: Sahina Bose <sabose@redhat.com<mailto:sabose@redhat.com>>
Inviato: mercoledì 27 giugno 2018 10:15
A: Sandro Bonazzola
Cc: Stefano Zappa; Simone Tiraboschi; users(a)ovirt.org<mailto:
users(a)ovirt.org>; devel@ovirt.org<mailto:devel@ovirt.org>
Oggetto: Re: [ovirt-users] oVirt HCI point-to-point interconnection
The point to point interconnect is something we have not explored - I
think this limits the solution from scaling out to more nodes.
On Wed, Jun 27, 2018 at 1:22 PM, Sandro Bonazzola <sbonazzo(a)redhat.com
<mailto:sbonazzo@redhat.com><mailto:sbonazzo@redhat.com<mailto:
sbonazzo(a)redhat.com>>> wrote:
Simone, Sahina, can you please have a look?
2018-06-07 9:59 GMT+02:00 Stefano Zappa <Stefano.Zappa(a)saleri.it<mailto:
Stefano.Zappa@saleri.it><mailto:Stefano.Zappa@saleri.it<mailto:
Stefano.Zappa(a)saleri.it>>>:
Good morning,
I would like to kindly ask you a question about the feasibility of
defining a point-to-point interconnection between three ovirt nodes.
Initially with the idea of optimizing the direct communications between
the nodes and especially the gluster communications, and so it would seem
quite easy, then evaluating a more complex configuration, assuming to
create an overlay L2 network on the three L3 point-to-point, using
techniques like geneve, of which at the moment I have no mastery.
If the direct routing of three nodes to interconnect the public network
with the private overlay network was not easily doable, we could leave the
private overlay network isolated from the outside world and connect the VM
hosted engine directly to the two networks with two adapters.
This layout with direct interconnection of the nodes without switches and
a shared L2 overlay network between the nodes may in future be contemplated
in future releases of your HCI solution?
Thank you for your attention, have a nice day!
Stefano Zappa.
[cid:609f1f14-f74e-489f-b86d-08647efc6d1c]
Stefano Zappa
IT Specialist CAE - TT-3
Industrie Saleri Italo S.p.A.
Phone: +39 0308250480
Fax: +39 0308250466
This message contains confidential information and is intended only for
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4:24 a.m.
New subject: [ovirt-users] Re: Re: oVirt HCI point-to-point interconnection
Hi Alex,
I have evaluated this approach using the latest version of oVirt Node.
In principle I would like to follow the guidelines of oVirt development team, and adopt
its best practices, trying to limit excessive customizations.
So I installed oVirt Node on 3 hosts and I manually configured the two additional
interfaces for the point-to-point interconnections on which then I configured Gluster.
This was done very easily, and it works!
I know that SDN is supported by oVirt, even if by default it is bridging to the outside.
I have no experience with the SDN, but I realized that the VxLAN or maybe Geneve was the
way to go, and now I also have your confirmation.
Creating Geneve L3 point-to-point tunnels between the nodes, on which then configure an L2
overlay network shared by oVirt pool hosts and on which then move all internal oVirt
communications.
In first analysis this intervention seems structural, not trivial, I think it would be
better to evaluate it carefully, and if interesting, write a best practice or better
integrate the functionality in the solution.
At the end the system must be stable and above all upgradable with traditional
procedures.
Stefano.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
This message contains confidential information and is intended only for
rightkicktech(a)gmail.com, ykaul(a)redhat.com, devel(a)ovirt.org, users(a)ovirt.org,
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________________________________________
Da: Alex K <rightkicktech(a)gmail.com>
Inviato: giovedì 28 giugno 2018 21:34
A: Stefano Zappa
Cc: Yaniv Kaul; devel; users(a)ovirt.org
Oggetto: Re: [ovirt-users] Re: [ovirt-devel] Re: oVirt HCI point-to-point
interconnection
Hi,
Network virtualization is already here and widely used. I am still not sure what is the
gain of this approach. You can do the same with VxLANs or Geneve. And how do you scale
this? Is it only for 3 node clusters?
Alex
On Thu, Jun 28, 2018, 11:47 Stefano Zappa
<Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it>> wrote:
Hi Yaniv,
no, the final purpose is not to save a couple of ports.
The benefit is the trend to convergence and consolidation of the networking, as already
done for the storage.
The external interconnection is a critical element of the HCI solution, a configuration
without switches would give more soundness and more independence.
If we think about HCI as the transition of IT infrastructure from hardware-defined to
software-defined, the first step was virtualization of the servers, the second step was
storage virtualization, the third step will be virtualization of networking.
Of course this also has an economic benefit, reduce the total cost of ownership and
traditional data-center inefficiencies.
We suppose a very traditional and simple external uplink, we can use the interfaces
integrated into the motherboard.
This will not be critical for the integrity of the our HCI solution, this will not require
broad bandwidth and low latency, this will be used exclusively to interconnect the
solution with the outside world, then with a traditional ethernet switch.
We suppose to give more attention to the point-to-point interconnection of the three
nodes, using 100 or 200 GbE cards for direct interconnection without switches.
The hypothetical purchase of these 3 cards will not be cheaper, sure, but it will be
twenty times less than introducing expensive switches that will certainly have more ports
than necessary.
Thanks for your attention,
Stefano.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
This message contains confidential information and is intended only for
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________________________________________
Da: Yaniv Kaul <ykaul@redhat.com<mailto:ykaul@redhat.com>>
Inviato: mercoledì 27 giugno 2018 16:20
A: Stefano Zappa
Cc: Sahina Bose; Sandro Bonazzola; devel@ovirt.org<mailto:devel@ovirt.org>;
users@ovirt.org<mailto:users@ovirt.org>
Oggetto: Re: [ovirt-devel] Re: [ovirt-users] oVirt HCI point-to-point interconnection
On Wed, Jun 27, 2018 at 11:26 AM, Stefano Zappa
<Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it><mailto:Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it>>>
wrote:
The final purpose is strictly targeted to your HCI solution with 3-node gluster
replication.
Can you explain to me what the benefit is? You need a switch anyway (for uplink), so the
'cost saving' is that you can use a 4 port (?) switch and do not need 6 ports?
Y.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
This message contains confidential information and is intended only for
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________________________________________
Da: Sahina Bose
<sabose@redhat.com<mailto:sabose@redhat.com><mailto:sabose@redhat.com<mailto:sabose@redhat.com>>>
Inviato: mercoledì 27 giugno 2018 10:15
A: Sandro Bonazzola
Cc: Stefano Zappa; Simone Tiraboschi;
users@ovirt.org<mailto:users@ovirt.org><mailto:users@ovirt.org<mailto:users@ovirt.org>>;
devel@ovirt.org<mailto:devel@ovirt.org><mailto:devel@ovirt.org<mailto:devel@ovirt.org>>
Oggetto: Re: [ovirt-users] oVirt HCI point-to-point interconnection
The point to point interconnect is something we have not explored - I think this limits
the solution from scaling out to more nodes.
On Wed, Jun 27, 2018 at 1:22 PM, Sandro Bonazzola
<sbonazzo@redhat.com<mailto:sbonazzo@redhat.com><mailto:sbonazzo@redhat.com<mailto:sbonazzo@redhat.com>><mailto:sbonazzo@redhat.com<mailto:sbonazzo@redhat.com><mailto:sbonazzo@redhat.com<mailto:sbonazzo@redhat.com>>>>
wrote:
Simone, Sahina, can you please have a look?
2018-06-07 9:59 GMT+02:00 Stefano Zappa
<Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it><mailto:Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it>><mailto:Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it><mailto:Stefano.Zappa@saleri.it<mailto:Stefano.Zappa@saleri.it>>>>:
Good morning,
I would like to kindly ask you a question about the feasibility of defining a
point-to-point interconnection between three ovirt nodes.
Initially with the idea of optimizing the direct communications between the nodes and
especially the gluster communications, and so it would seem quite easy, then evaluating a
more complex configuration, assuming to create an overlay L2 network on the three L3
point-to-point, using techniques like geneve, of which at the moment I have no mastery.
If the direct routing of three nodes to interconnect the public network with the private
overlay network was not easily doable, we could leave the private overlay network isolated
from the outside world and connect the VM hosted engine directly to the two networks with
two adapters.
This layout with direct interconnection of the nodes without switches and a shared L2
overlay network between the nodes may in future be contemplated in future releases of your
HCI solution?
Thank you for your attention, have a nice day!
Stefano Zappa.
[cid:609f1f14-f74e-489f-b86d-08647efc6d1c]
Stefano Zappa
IT Specialist CAE - TT-3
Industrie Saleri Italo S.p.A.
Phone: +39 0308250480
Fax: +39 0308250466
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11:33 a.m.
New subject: [ovirt-users] Re: Re: oVirt HCI point-to-point interconnection
On Fri, Jun 29, 2018 at 12:24 PM, Stefano Zappa <Stefano.Zappa(a)saleri.it>
wrote:
Hi Alex,
I have evaluated this approach using the latest version of oVirt Node.
In principle I would like to follow the guidelines of oVirt development
team, and adopt its best practices, trying to limit excessive
customizations.
So I installed oVirt Node on 3 hosts and I manually configured the two
additional interfaces for the point-to-point interconnections on which then
I configured Gluster.
This was done very easily, and it works!
Sounds like an interesting item for ovirt.org blog!
Y.
I know that SDN is supported by oVirt, even if by default it is bridging
to the outside.
I have no experience with the SDN, but I realized that the VxLAN or maybe
Geneve was the way to go, and now I also have your confirmation.
Creating Geneve L3 point-to-point tunnels between the nodes, on which then
configure an L2 overlay network shared by oVirt pool hosts and on which
then move all internal oVirt communications.
In first analysis this intervention seems structural, not trivial, I think
it would be better to evaluate it carefully, and if interesting, write a
best practice or better integrate the functionality in the solution.
At the end the system must be stable and above all upgradable with
traditional procedures.
Stefano.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
This message contains confidential information and is intended only for
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Da: Alex K <rightkicktech(a)gmail.com>
Inviato: giovedì 28 giugno 2018 21:34
A: Stefano Zappa
Cc: Yaniv Kaul; devel; users(a)ovirt.org
Oggetto: Re: [ovirt-users] Re: [ovirt-devel] Re: oVirt HCI point-to-point
interconnection
Hi,
Network virtualization is already here and widely used. I am still not
sure what is the gain of this approach. You can do the same with VxLANs or
Geneve. And how do you scale this? Is it only for 3 node clusters?
Alex
On Thu, Jun 28, 2018, 11:47 Stefano Zappa <Stefano.Zappa(a)saleri.it<mailto:
Stefano.Zappa(a)saleri.it>> wrote:
Hi Yaniv,
no, the final purpose is not to save a couple of ports.
The benefit is the trend to convergence and consolidation of the
networking, as already done for the storage.
The external interconnection is a critical element of the HCI solution, a
configuration without switches would give more soundness and more
independence.
If we think about HCI as the transition of IT infrastructure from
hardware-defined to software-defined, the first step was virtualization of
the servers, the second step was storage virtualization, the third step
will be virtualization of networking.
Of course this also has an economic benefit, reduce the total cost of
ownership and traditional data-center inefficiencies.
We suppose a very traditional and simple external uplink, we can use the
interfaces integrated into the motherboard.
This will not be critical for the integrity of the our HCI solution, this
will not require broad bandwidth and low latency, this will be used
exclusively to interconnect the solution with the outside world, then with
a traditional ethernet switch.
We suppose to give more attention to the point-to-point interconnection of
the three nodes, using 100 or 200 GbE cards for direct interconnection
without switches.
The hypothetical purchase of these 3 cards will not be cheaper, sure, but
it will be twenty times less than introducing expensive switches that will
certainly have more ports than necessary.
Thanks for your attention,
Stefano.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
This message contains confidential information and is intended only for
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sabose@redhat.com<mailto:sabose@redhat.com>, sbonazzo(a)redhat.com<mailto:
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please request a hard-copy version.
________________________________________
Da: Yaniv Kaul <ykaul@redhat.com<mailto:ykaul@redhat.com>>
Inviato: mercoledì 27 giugno 2018 16:20
A: Stefano Zappa
Cc: Sahina Bose; Sandro Bonazzola; devel@ovirt.org<mailto:devel@ovirt.org>;
users@ovirt.org<mailto:users@ovirt.org>
Oggetto: Re: [ovirt-devel] Re: [ovirt-users] oVirt HCI point-to-point
interconnection
On Wed, Jun 27, 2018 at 11:26 AM, Stefano Zappa <Stefano.Zappa(a)saleri.it<
mailto:Stefano.Zappa@saleri.it><mailto:Stefano.Zappa@saleri.it<mailto:
Stefano.Zappa(a)saleri.it>>> wrote:
The final purpose is strictly targeted to your HCI solution with 3-node
gluster replication.
Can you explain to me what the benefit is? You need a switch anyway (for
uplink), so the 'cost saving' is that you can use a 4 port (?) switch and
do not need 6 ports?
Y.
Stefano Zappa
IT Specialist CAE - TT-3
Technical Department
Industrie Saleri Italo S.p.A.
Phone:+39 0308250480
Fax:+39 0308250466
This message contains confidential information and is intended only for
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<mailto:sabose@redhat.com>>, sbonazzo@redhat.com<mailto:sbo
nazzo@redhat.com><mailto:sbonazzo@redhat.com<mailto:sbonazzo@redhat.com>>,
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<mailto:stirabos@redhat.com>>, users@ovirt.org<mailto:users@ovirt.org
><mailto:users@ovirt.org<mailto:users@ovirt.org>>,
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><mailto:users@ovirt.org<mailto:users@ovirt.org>>,
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should not disseminate, distribute or copy this e-mail. Please notify
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error-free as information could be intercepted, corrupted, lost, destroyed,
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message, which arise as a result of e-mail transmission. If verification is
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________________________________________
Da: Sahina Bose <sabose@redhat.com<mailto:sabose@redhat.com><mailto:
sabose@redhat.com<mailto:sabose@redhat.com>>>
Inviato: mercoledì 27 giugno 2018 10:15
A: Sandro Bonazzola
Cc: Stefano Zappa; Simone Tiraboschi; users@ovirt.org<mailto:users@
ovirt.org><mailto:users@ovirt.org<mailto:users@ovirt.org>>;
devel@ovirt.org<mailto:devel@ovirt.org><mailto:devel@ovirt.org<mailto:
devel(a)ovirt.org>>
Oggetto: Re: [ovirt-users] oVirt HCI point-to-point interconnection
The point to point interconnect is something we have not explored - I
think this limits the solution from scaling out to more nodes.
On Wed, Jun 27, 2018 at 1:22 PM, Sandro Bonazzola <sbonazzo(a)redhat.com
<mailto:sbonazzo@redhat.com><mailto:sbonazzo@redhat.com<mailto:sbonazz
o@redhat.com>><mailto:sbonazzo@redhat.com<mailto:sbonazzo@redhat.com
><mailto:sbonazzo@redhat.com<mailto:sbonazzo@redhat.com>>>> wrote:
Simone, Sahina, can you please have a look?
2018-06-07 9:59 GMT+02:00 Stefano Zappa <Stefano.Zappa(a)saleri.it<mailto:
Stefano.Zappa@saleri.it><mailto:Stefano.Zappa@saleri.it<mailto:
Stefano.Zappa@saleri.it>><mailto:Stefano.Zappa@saleri.it<mailto:Stefano
.Zappa@saleri.it><mailto:Stefano.Zappa@saleri.it<mailto:Stef
ano.Zappa(a)saleri.it>>>>:
Good morning,
I would like to kindly ask you a question about the feasibility of
defining a point-to-point interconnection between three ovirt nodes.
Initially with the idea of optimizing the direct communications between
the nodes and especially the gluster communications, and so it would seem
quite easy, then evaluating a more complex configuration, assuming to
create an overlay L2 network on the three L3 point-to-point, using
techniques like geneve, of which at the moment I have no mastery.
If the direct routing of three nodes to interconnect the public network
with the private overlay network was not easily doable, we could leave the
private overlay network isolated from the outside world and connect the VM
hosted engine directly to the two networks with two adapters.
This layout with direct interconnection of the nodes without switches and
a shared L2 overlay network between the nodes may in future be contemplated
in future releases of your HCI solution?
Thank you for your attention, have a nice day!
Stefano Zappa.
[cid:609f1f14-f74e-489f-b86d-08647efc6d1c]
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Stefano Zappa -
Yaniv Kaul