[ovirt-users] [hosted-engine] cluster network setup deadlock

[Moti Asayag]

----- Original Message -----
> From: "Yuriy Demchenko" <demchenko.ya at gmail.com>
> To: users at ovirt.org
> Sent: Friday, September 5, 2014 11:25:17 AM
> Subject: [ovirt-users] [hosted-engine] cluster network setup deadlock
> 
> Hi,
> 
> i'm testing hosted-engine in my lab and have some issues doing network
> configuration of my cluster
> I have 2 hosts + storage (iscsi/nfs), each with 2 NICs. My aim is highly
> available platform, so it must tolerate loss of one NIC, thus i want to
> use bonding + vlans, scheme like this:
> bond device used as ovirtmgmt network (mgmt/display/migration, not a VM
> net) with no vlan tagging and several vlan-tagged networks for VMs and
> storage connection on top of it. I use that kind of scheme all the time
> with non-selfhosted ovirt, as it provides reliability, requires only 2
> nics, allows pxe-kickstarting and requires no switch reconfiguration
> during/after host setup.
> However, with self-hosted engine i'm stuck - at deploy stage installer
> setups engine VM into ovirtmgmt network, making it VM network and i cant
> change it afterwards: when i uncheck "vm network" in web-interface for
> ovirtmgmt - it couldnt apply changes on host that running engine-vm (ok,
> thats expected), but if i setup another host with desired network
> configuration (i.e. ovirtmgmt - not a vm network + separate vlan-tagged
> networks for vm) it just couldnt migrate or start engine-vm, as it lacks
> "ovirtmgmt" bridge interface.

Since the host-engine is a vm, it should be connected to a vm network, which
leaves only 2 options for that vm network:
1. vlan - where the network should co-exist over the bond with other vlan
networks (and if wishes, you can define a non vlan-non vm network to act
as the display/migration network)
2. non vlan - which requires the network to be exclusively defined on the host.
 
There is a bug recently fixed by Toni (cc'ed) which seems to solve your issue:
https://bugzilla.redhat.com/show_bug.cgi?id=1124207


> So, is there any way to change engine-vm network settings to run it on
> different bridge, not ovirtmgmt?
> 


> --
> Yuriy Demchenko
> 
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