In addition I had to add an alias to modprobe: [root@h2 modprobe.d]# cat dummy.conf alias dummy0 dummy Den 2016-12-28 kl. 23:03, skrev Sverker Abrahamsson:
Hi I first tried to set device name to dummy_0, but then ifup did not succeed in creating the device unless I first did 'ip link add dummy_0 type dummy' but then it would not suceed to establish the if on reboot.
Setting fake_nics = dummy0 would not work neither, but this works:
fake_nics = dummy*
The engine is now able to find the if and assign bridge ovirtmgmt to it.
However, I then run into the next issue when starting a VM:
2016-12-28 22:28:23,897 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (ForkJoinPool-1-worker-2) [] Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: VM CentOS7 is down with error. Exit message: Cannot get interface MTU on 'br-int': No such device.
This VM has a nic on ovirtbridge, which comes from the OVN provider.
/Sverker
Den 2016-12-28 kl. 14:38, skrev Marcin Mirecki:
Sverker,
Can you try adding a vnic named veth_* or dummy_*, (or alternatively add the name of the vnic to vdsm.config fake_nics), and setup the management network using this vnic? I suppose adding the vnic you use for connecting to the engine to fake_nics should make it visible to the engine, and you should be able to use it for the setup.
Marcin
----- Original Message -----
From: "Marcin Mirecki" <mmirecki@redhat.com> To: "Sverker Abrahamsson" <sverker@abrahamsson.com> Cc: "Ovirt Users" <users@ovirt.org> Sent: Wednesday, December 28, 2016 12:06:26 PM Subject: Re: [ovirt-users] Issue with OVN/OVS and mandatory ovirtmgmt network
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@abrahamsson.com> To: "Marcin Mirecki" <mmirecki@redhat.com> Cc: "Ovirt Users" <users@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@abrahamsson.com> To: users@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:
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