[ovirt-users] Re: Host Only Network

2019-01-29 Thread Dominik Holler
On Tue, 29 Jan 2019 15:14:42 -
"Brian Wilson"  wrote:

> What is the proper way to provide networks without an egress of the
> host?In VMware i would take a portgroup and just not associate it
> with a vnic.   In ovirt that doesnt seem possible as the network
> doesnt seem to function unless i move to a physical nic under the
> "Setup Host Networks" options.
> 
> The Goal here is to provide a network for VMs to use on the single
> host only no traffic would need to leave the host but would need to
> have VLan IDs and segmentation through them on the host

Maybe I do not get your scenario completely.
Would a OVN nework per host solve your problem?


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[ovirt-users] Re: Host Only Network

2019-01-29 Thread Dan Kenigsberg
On Tue, 29 Jan 2019, 17:44 Dominik Holler  On Tue, 29 Jan 2019 15:14:42 -
> "Brian Wilson"  wrote:
>
> > What is the proper way to provide networks without an egress of the
> > host?In VMware i would take a portgroup and just not associate it
> > with a vnic.   In ovirt that doesnt seem possible as the network
> > doesnt seem to function unless i move to a physical nic under the
> > "Setup Host Networks" options.
> >
> > The Goal here is to provide a network for VMs to use on the single
> > host only no traffic would need to leave the host but would need to
> > have VLan IDs and segmentation through them on the host
>
> Maybe I do not get your scenario completely.
> Would a OVN nework per host solve your problem?
>

OVN allows to create an isolated network that speads across the while
cluster.

If I understand correctly, Brian has more humble requirement, which users
implement by creating a dummy0 device (note the lack of underscore in the
name). The dummy device would she as a nic on the host, allows attaching a
bridge to it, but lets no traffic leave the host.

Regards,
Dan.
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[ovirt-users] Re: Host Only Network

2019-01-29 Thread Brian Wilson
Dan is correct and i have actully tested out both of these suggestions and the 
notes i have from them are:

OVN Networks -
 These work well but seem to be limited in that they do not allow a VLAN ID to 
be tagged to them, seems the solution to that is to connect them to an external 
network which leads back to the same question of having to have that network be 
assigned to a nic.

Attaching to a NIC thats down -
 This works but wont be a solution in a machine that may not have an extra nic, 
and was looking for something more portable, also seems that it stays down due 
to no carrier (makes sense), while the dummy interface will show itself as up.

Dummy Network -
  This works and will be the way we implement it until we find a reason not to. 
 This will allow us to use Bridge Networks still which will mimic setups we 
have that are actually connected to physical networks, as well VLAN IDs on them.
   Side note on this i actually had to use dummy_0 as the name and then restart 
the engine before it would show up in the Network Assignment Window for the 
hosts under "Setup Host Networks"


Big thanks to you all on helping with this
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[ovirt-users] Re: Host Only Network

2019-01-30 Thread Staniforth, Paul
OVN is the way to go but if you have a spare nic you can attach you it 
unplugged to a network with or without VLAN.

Regards
Paul S.

From: Dominik Holler 
Sent: 29 January 2019 15:43
To: Brian Wilson
Cc: users@ovirt.org
Subject: [ovirt-users] Re: Host Only Network

On Tue, 29 Jan 2019 15:14:42 -
"Brian Wilson"  wrote:

> What is the proper way to provide networks without an egress of the
> host?In VMware i would take a portgroup and just not associate it
> with a vnic.   In ovirt that doesnt seem possible as the network
> doesnt seem to function unless i move to a physical nic under the
> "Setup Host Networks" options.
>
> The Goal here is to provide a network for VMs to use on the single
> host only no traffic would need to leave the host but would need to
> have VLan IDs and segmentation through them on the host

Maybe I do not get your scenario completely.
Would a OVN nework per host solve your problem?


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