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

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