Re: [ovirt-users] Communicate between the guest vm's hosted on different hosts on different data centres using OVS

2017-04-23 Thread Yaniv Dary
You will the DCs to share the same physical L2 to allow communication and
deploy the same OVN definition between the DCs.

YANIV DARY

SENIOR TECHNICAL PRODUCT MANAGER

Red Hat Israel Ltd. 

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On Thu, Apr 20, 2017 at 9:43 PM, Linov Suresh 
wrote:

> Hello,
>
> I have configured OVS network on oVirt 4.1.1, following the document
> https://www.ovirt.org/blog/2016/11/ovirt-provider-ovn/
>
> I have created OVN Provider, and created new Logical Network for OVS using
> OVN Provider. I have synced the network also selected OVS when I created
> the cluster.
>
> I have two data centres and each data centre has one host each.
>
> Now I have created VM's selecting OVS network (not ovirtmgmt). VM's in the
> same data centre can talk to each other.
>
> How do i make the VM's hosted on different data centre can talk to each
> other?
>
> Appreciate your help in advance,
>
> Sincerely,
>
> Suresh.
>
>
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Re: [ovirt-users] Communicate between the guest vm's hosted on, different hosts on different data centres using OVS

2017-04-23 Thread Linov Suresh
I have created a separate network for 10G network and made central server
part of it. After that configured the OVN controller using vdsm-tool

vdsm-tool ovn-config  

Then added OVN provider to oVirt as an external network provider and
created a new network based on OVS. Now the new VM's we create use this new
network.

Thanks for your help!

On Fri, Apr 21, 2017 at 5:39 AM, Charles Tassell  wrote:

> Hmm, so you have 2 10G ports on each host.  1 port is currently in use
> with oVirt, and the other isn't?  Then I think you just add a new network
> in the Networks tab called OVNLink, then go into the Hosts tab, click on
> each host and then on the Network Interfaces tab in the bottom of the
> window and assign the unused 10G network device to that link.
>
> I haven't used OVN with oVirt, but that would work with regular networking
> so I think it should work with OVN.
>
> If the link is already in use, you should be able to do the same thing
> only when you add the new network set it up with a VLAN ID.  If you are
> going through a switch then the switch will have to be setup to handle the
> VLANs.
>
>
>
> On 2017-04-20 10:07 PM, Linov Suresh wrote:
>
> Hi Charles,
>
> We use an Ethernet cable to connect between the hosts through 10G port.
>
> We want to use the guest VM's hosted on different hosts 10G network. oVirt
> already supports SR-IOV. So we should guest 10G speed for our VM's.
>
> In KVM we can create a second bridge and add the 10G interface to the
> bridge would do the trick.
>
> But in oVirt how do we do this? We want to use our OVs network, which was
> created using OVN Provider.
>
>
>Linov Suresh
>
>
>
> On Thu, Apr 20, 2017 at 6:59 PM, Charles Tassell 
> wrote:
>
>> Hi Suresh,
>>
>>   You would need to connect the two OVN instances somehow.  If it's just
>> two single hosts, I think the easiest way would be to create a VPN
>> connection between the two hosts with OpenVPN or the like and then add the
>> tun/tap interfaces into the OVN on each box.  You might run into problems
>> if you start adding more hosts though, as if the host with the VPN goes
>> down it would disconnect the two datacenters.
>>
>>   If the two datacenters are on the same physical network (ie, you just
>> mean oVirt datacenter and not different colocation providers) then adding a
>> VLAN to the NICs connected to the OVN interface would work.  You would
>> probably have to setup some sort of channel bonding/LACP as you add more
>> hosts, but OVN should be able to handle that simply enough.
>>
>> On 2017-04-20 07:33 PM, users-requ...@ovirt.org wrote:
>>
>>> Date: Thu, 20 Apr 2017 14:43:26 -0400
>>> From: Linov Suresh 
>>> To: users@ovirt.org
>>> Subject: [ovirt-users] Communicate between the guest vm's hosted on
>>> different hosts on different data centres using OVS
>>> Message-ID:
>>> 

Re: [ovirt-users] Communicate between the guest vm's hosted on, different hosts on different data centres using OVS

2017-04-21 Thread Charles Tassell
Hmm, so you have 2 10G ports on each host.  1 port is currently in use 
with oVirt, and the other isn't?  Then I think you just add a new 
network in the Networks tab called OVNLink, then go into the Hosts tab, 
click on each host and then on the Network Interfaces tab in the bottom 
of the window and assign the unused 10G network device to that link.


I haven't used OVN with oVirt, but that would work with regular 
networking so I think it should work with OVN.


If the link is already in use, you should be able to do the same thing 
only when you add the new network set it up with a VLAN ID. If you are 
going through a switch then the switch will have to be setup to handle 
the VLANs.



On 2017-04-20 10:07 PM, Linov Suresh wrote:

Hi Charles,

We use an Ethernet cable to connect between the hosts through 10G port.

We want to use the guest VM's hosted on different hosts 10G network. 
oVirt already supports SR-IOV. So we should guest 10G speed for our VM's.


In KVM we can create a second bridge and add the 10G interface to the 
bridge would do the trick.


But in oVirt how do we do this? We want to use our OVs network, which 
was created using OVN Provider.


Linov Suresh


On Thu, Apr 20, 2017 at 6:59 PM, Charles Tassell > wrote:


Hi Suresh,

  You would need to connect the two OVN instances somehow.  If
it's just two single hosts, I think the easiest way would be to
create a VPN connection between the two hosts with OpenVPN or the
like and then add the tun/tap interfaces into the OVN on each
box.  You might run into problems if you start adding more hosts
though, as if the host with the VPN goes down it would disconnect
the two datacenters.

  If the two datacenters are on the same physical network (ie, you
just mean oVirt datacenter and not different colocation providers)
then adding a VLAN to the NICs connected to the OVN interface
would work.  You would probably have to setup some sort of channel
bonding/LACP as you add more hosts, but OVN should be able to
handle that simply enough.

On 2017-04-20 07:33 PM, users-requ...@ovirt.org
 wrote:

Date: Thu, 20 Apr 2017 14:43:26 -0400
From: Linov Suresh >
To: users@ovirt.org 
Subject: [ovirt-users] Communicate between the guest vm's
hosted on
different hosts on different data centres using OVS
Message-ID:
   

Re: [ovirt-users] Communicate between the guest vm's hosted on, different hosts on different data centres using OVS

2017-04-20 Thread Linov Suresh
Hi Charles,

We use an Ethernet cable to connect between the hosts through 10G port.

We want to use the guest VM's hosted on different hosts 10G network. oVirt
already supports SR-IOV. So we should guest 10G speed for our VM's.

In KVM we can create a second bridge and add the 10G interface to the
bridge would do the trick.

But in oVirt how do we do this? We want to use our OVs network, which was
created using OVN Provider.


   Linov Suresh



On Thu, Apr 20, 2017 at 6:59 PM, Charles Tassell  wrote:

> Hi Suresh,
>
>   You would need to connect the two OVN instances somehow.  If it's just
> two single hosts, I think the easiest way would be to create a VPN
> connection between the two hosts with OpenVPN or the like and then add the
> tun/tap interfaces into the OVN on each box.  You might run into problems
> if you start adding more hosts though, as if the host with the VPN goes
> down it would disconnect the two datacenters.
>
>   If the two datacenters are on the same physical network (ie, you just
> mean oVirt datacenter and not different colocation providers) then adding a
> VLAN to the NICs connected to the OVN interface would work.  You would
> probably have to setup some sort of channel bonding/LACP as you add more
> hosts, but OVN should be able to handle that simply enough.
>
> On 2017-04-20 07:33 PM, users-requ...@ovirt.org wrote:
>
>> Date: Thu, 20 Apr 2017 14:43:26 -0400
>> From: Linov Suresh 
>> To: users@ovirt.org
>> Subject: [ovirt-users] Communicate between the guest vm's hosted on
>> different hosts on different data centres using OVS
>> Message-ID:
>> 

Re: [ovirt-users] Communicate between the guest vm's hosted on, different hosts on different data centres using OVS

2017-04-20 Thread Charles Tassell

Hi Suresh,

  You would need to connect the two OVN instances somehow.  If it's 
just two single hosts, I think the easiest way would be to create a VPN 
connection between the two hosts with OpenVPN or the like and then add 
the tun/tap interfaces into the OVN on each box.  You might run into 
problems if you start adding more hosts though, as if the host with the 
VPN goes down it would disconnect the two datacenters.


  If the two datacenters are on the same physical network (ie, you just 
mean oVirt datacenter and not different colocation providers) then 
adding a VLAN to the NICs connected to the OVN interface would work.  
You would probably have to setup some sort of channel bonding/LACP as 
you add more hosts, but OVN should be able to handle that simply enough.


On 2017-04-20 07:33 PM, users-requ...@ovirt.org wrote:

Date: Thu, 20 Apr 2017 14:43:26 -0400
From: Linov Suresh 
To: users@ovirt.org
Subject: [ovirt-users] Communicate between the guest vm's hosted on
different hosts on different data centres using OVS
Message-ID: