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

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(a)redhat.com&gt; >>> To: "Sverker Abrahamsson" <sverker(a)abrahamsson.com&gt; >>> Cc: "Ovirt Users" <users(a)ovirt.org&gt; >>> 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(a)abrahamsson.com&gt; >>>> To: "Marcin Mirecki" <mmirecki(a)redhat.com&gt; >>>> Cc: "Ovirt Users" <users(a)ovirt.org&gt; >>>> 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(a)abrahamsson.com&gt; >>>>>> To: users(a)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: >>>>>> >>>>>> >>>> >>> _______________________________________________ >>> Users mailing list >>> Users(a)ovirt.org >>> http://lists.ovirt.org/mailman/listinfo/users >>> > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users