[ovirt-users] Issue with OVN/OVS and mandatory ovirtmgmt network

Wed Dec 28 11:06:26 UTC 2016

> I have an internal OVS bridge called ovirtbridge which has a port with
> IP address, but in the host network settings that port is not visible.

I just verified and unfortunately the virtual ports are not visible in engine to assign a network to :(
I'm afraid that the engine is not ready for such a scenario (even if it works).
Please give me some time to look for a solution.

----- Original Message -----
> From: "Sverker Abrahamsson" <sverker at abrahamsson.com>
> To: "Marcin Mirecki" <mmirecki at redhat.com>
> Cc: "Ovirt Users" <users at ovirt.org>
> Sent: Wednesday, December 28, 2016 11:48:24 AM
> Subject: Re: [ovirt-users] Issue with OVN/OVS and mandatory ovirtmgmt network
> 
> Hi Marcin
> Yes, that is my issue. I don't want to let ovirt/vdsm see eth0 nor
> ovsbridge0 since as soon as it sees them it messes up the network config
> so that the host will be unreachable.
> 
> I have an internal OVS bridge called ovirtbridge which has a port with
> IP address, but in the host network settings that port is not visible.
> It doesn't help to name it ovirtmgmt.
> 
> The engine is able to communicate with the host on the ip it has been
> given, it's just that it believes that it HAS to have a ovirtmgmt
> network which can't be on OVN.
> 
> /Sverker
> 
> 
> Den 2016-12-28 kl. 10:45, skrev Marcin Mirecki:
> > Hi Sverker,
> >
> > The management network is mandatory on each host. It's used by the
> > engine to communicate with the host.
> > Looking at your description and the exception it looks like it is missing.
> > The error is caused by not having any network for the host
> > (network list retrieved in InterfaceDaoImpl.getHostNetworksByCluster -
> > which
> > gets all the networks on nics for a host from vds_interface table in the
> > DB).
> >
> > Could you maybe create a virtual nic connected to ovsbridge0 (as I
> > understand you
> > have no physical nic available) and use this for the management network?
> >
> >> I then create a bridge for use with ovirt, with a private address.
> > I'm not quite sure I understand. Is this yet another bridge connected to
> > ovsbridge0?
> > You could also attach the vnic for the management network here if need be.
> >
> > Please keep in mind that OVN has no use in setting up the management
> > network.
> > The OVN provider can only handle external networks, which can not be used
> > for a
> > management network.
> >
> > Marcin
> >
> >
> > ----- Original Message -----
> >> From: "Sverker Abrahamsson" <sverker at abrahamsson.com>
> >> To: users at ovirt.org
> >> Sent: Wednesday, December 28, 2016 12:39:59 AM
> >> Subject: [ovirt-users] Issue with OVN/OVS and mandatory ovirtmgmt network
> >>
> >>
> >>
> >> Hi
> >> For long time I've been looking for proper support in ovirt for Open
> >> vSwitch
> >> so I'm happy that it is moving in the right direction. However, there
> >> seems
> >> to still be a dependency on a ovirtmgmt bridge and I'm unable to move that
> >> to the OVN provider.
> >>
> >> The hosting center where I rent hw instances has a bit special network
> >> setup,
> >> so I have one physical network port with a /32 netmask and point-to-point
> >> config to router. The physical port I connect to a ovs bridge which has
> >> the
> >> public ip. Since ovirt always messes up the network config when I've tried
> >> to let it have access to the network config for the physical port, I've
> >> set
> >> eht0 and ovsbridge0 as hidden in vdsm.conf.
> >>
> >>
> >> I then create a bridge for use with ovirt, with a private address. With
> >> the
> >> OVN provider I am now able to import these into the engine and it looks
> >> good. When creating a VM I can select that it will have a vNic on my OVS
> >> bridge.
> >>
> >> However, I can't start the VM as an exception is thrown in the log:
> >>
> >> 2016-12-28 00:13:33,350 ERROR [org.ovirt.engine.core.bll.RunVmCommand]
> >> (default task-5) [3c882d53] Error during ValidateFailure.:
> >> java.lang.NullPointerException
> >> at
> >> org.ovirt.engine.core.bll.scheduling.policyunits.NetworkPolicyUnit.validateRequiredNetworksAvailable(NetworkPolicyUnit.java:140)
> >> [bll.jar:]
> >> at
> >> org.ovirt.engine.core.bll.scheduling.policyunits.NetworkPolicyUnit.filter(NetworkPolicyUnit.java:69)
> >> [bll.jar:]
> >> at
> >> org.ovirt.engine.core.bll.scheduling.SchedulingManager.runInternalFilters(SchedulingManager.java:597)
> >> [bll.jar:]
> >> at
> >> org.ovirt.engine.core.bll.scheduling.SchedulingManager.runFilters(SchedulingManager.java:564)
> >> [bll.jar:]
> >> at
> >> org.ovirt.engine.core.bll.scheduling.SchedulingManager.canSchedule(SchedulingManager.java:494)
> >> [bll.jar:]
> >> at
> >> org.ovirt.engine.core.bll.validator.RunVmValidator.canRunVm(RunVmValidator.java:133)
> >> [bll.jar:]
> >> at org.ovirt.engine.core.bll.RunVmCommand.validate(RunVmCommand.java:940)
> >> [bll.jar:]
> >> at
> >> org.ovirt.engine.core.bll.CommandBase.internalValidate(CommandBase.java:886)
> >> [bll.jar:]
> >> at
> >> org.ovirt.engine.core.bll.CommandBase.validateOnly(CommandBase.java:366)
> >> [bll.jar:]
> >> at
> >> org.ovirt.engine.core.bll.PrevalidatingMultipleActionsRunner.canRunActions(PrevalidatingMultipleActionsRunner.java:113)
> >> [bll.jar:]
> >> at
> >> org.ovirt.engine.core.bll.PrevalidatingMultipleActionsRunner.invokeCommands(PrevalidatingMultipleActionsRunner.java:99)
> >> [bll.jar:]
> >> at
> >> org.ovirt.engine.core.bll.PrevalidatingMultipleActionsRunner.execute(PrevalidatingMultipleActionsRunner.java:76)
> >> [bll.jar:]
> >> at
> >> org.ovirt.engine.core.bll.Backend.runMultipleActionsImpl(Backend.java:613)
> >> [bll.jar:]
> >> at org.ovirt.engine.core.bll.Backend.runMultipleActions(Backend.java:583)
> >> [bll.jar:]
> >>
> >>
> >> Looking at that section of code where the exception is thrown, I see that
> >> it
> >> iterates over host networks to find required networks, which I assume is
> >> ovirtmgmt. In the host network setup dialog I don't see any networks at
> >> all
> >> but it lists ovirtmgmt as required. It also list the OVN networks but
> >> these
> >> can't be statically assigned as they are added dynamically when needed,
> >> which is fine.
> >>
> >> I believe that I either need to remove ovirtmgmt network or configure that
> >> it
> >> is provided by the OVN provider, but neither is possible. Preferably it
> >> shouldn't be hardcoded which network is management and mandatory but be
> >> possible to configure.
> >>
> >> /Sverker
> >> Den 2016-12-27 kl. 17:10, skrev Marcin Mirecki:
> >>
> >>
> 
> 