Help Needed :/

[titi tutu]

Hello everyone,

I'm currently struggling with MACVTAP feature on a RKE2 cluster
I followed all the steps in the doc in order to use macvtap binding but when I launch the VM, the virt-launcher is crashing and here is the logs:

{"component":"virt-launcher","level":"error","msg":"failed to get a link for interface: ","pos":"generators.go:83","reason":"Link not found","timestamp":"2024-09-20T15:48:12.708583Z"}
{"component":"virt-launcher","level":"fatal","msg":"failed to create libvirt configuration","pos":"podnic.go:95","reason":"Link not found","timestamp":"2024-09-20T15:48:12.708598Z"}
panic: failed to create libvirt configuration
goroutine 70 [running]:
kubevirt.io/client-go/log.FilteredLogger.Critical({{0x21147a0, 0xc000475f20}, {0x1e15e5e, 0xd}, 0x0, 0x0, 0x2, 0x2, {0x2116b20, 0xc0004ff9c0}}, ...)
        staging/src/kubevirt.io/client-go/log/log.go:342 +0x18c
kubevirt.io/kubevirt/pkg/network/setup.(*podNIC).PlugPhase2(0xc0006582d0, 0x2?)
        pkg/network/setup/podnic.go:95 +0xfd
kubevirt.io/kubevirt/pkg/network/setup.(*VMNetworkConfigurator).SetupPodNetworkPhase2(0xc0002aa008?, 0xc000399088, {0xc000387c40?, 0xc0006e8cf8?, 0x1?})
        pkg/network/setup/network.go:88 +0x145
kubevirt.io/kubevirt/pkg/virt-launcher/virtwrap.(*LibvirtDomainManager).preStartHook(0xc0001ee1c0, 0xc0002aa008, 0xc000399088, 0x0, 0xc000572480)
        pkg/virt-launcher/virtwrap/manager.go:779 +0xdf7
kubevirt.io/kubevirt/pkg/virt-launcher/virtwrap.(*LibvirtDomainManager).lookupOrCreateVirDomain(0xc0001ee1c0, 0xc000399088, 0xc0002aa008, 0xc000572480)
        pkg/virt-launcher/virtwrap/manager.go:1275 +0x1cd
kubevirt.io/kubevirt/pkg/virt-launcher/virtwrap.(*LibvirtDomainManager).SyncVMI(0xc0001ee1c0, 0xc0002aa008, 0x0, 0xc000572480)
        pkg/virt-launcher/virtwrap/manager.go:1090 +0x65f
kubevirt.io/kubevirt/pkg/virt-launcher/virtwrap/cmd-server.(*Launcher).SyncVirtualMachine(0xc000012120, {0x1d8cc20?, 0xc0000aeab8?}, 0xc00056e280)
        pkg/virt-launcher/virtwrap/cmd-server/server.go:201 +0x82
kubevirt.io/kubevirt/pkg/handler-launcher-com/cmd/v1._Cmd_SyncVirtualMachine_Handler({0x1d8cc20, 0xc000012120}, {0x2132a70, 0xc0005488d0}, 0xc000530380, 0x0)
        bazel-out/k8-fastbuild/bin/pkg/handler-launcher-com/cmd/v1/v1_go_proto_/kubevirt.io/kubevirt/pkg/handler-launcher-com/cmd/v1/cmd.pb.go:3281 +0x1a9
google.golang.org/grpc.(*Server).processUnaryRPC(0xc000228000, {0x213b6a0, 0xc0002ce4e0}, 0xc000464480, 0xc000114f00, 0x31727e0, 0x0)
        external/org_golang_google_grpc/server.go:1318 +0xaea
google.golang.org/grpc.(*Server).handleStream(0xc000228000, {0x213b6a0, 0xc0002ce4e0}, 0xc000464480, 0x0)
        external/org_golang_google_grpc/server.go:1659 +0x9da
google.golang.org/grpc.(*Server).serveStreams.func1.2()
        external/org_golang_google_grpc/server.go:955 +0x8d
created by google.golang.org/grpc.(*Server).serveStreams.func1 in goroutine 100
        external/org_golang_google_grpc/server.go:953 +0x226
{"component":"virt-launcher-monitor","level":"info","msg":"Reaped pid 12 with status 512","pos":"virt-launcher-monitor.go:198","timestamp":"2024-09-20T15:48:12.712608Z"}

Here the VM:

apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  name: tiny11
  namespace: kubevirt
spec:
  running: false
  template:
    metadata:
      labels:
        kubevirt.io/domain: tiny11
    spec:
      domain:
        cpu:
          cores: 4
        devices:
          interfaces:
            - name: pod
              masquerade: {}
            - name: wan
              binding:
                name: macvtap
          disks:
          - bootOrder: 1
            cdrom:
              bus: sata
            name: cdromiso
          - bootOrder: 2
            disk:
              bus: virtio
            name: harddrive
          - bootOrder: 3
            cdrom:
              bus: sata
            name: virtiocontainerdisk
        machine:
          type: q35
        resources:
          requests:
            memory: 8G
      networks:
        - name: pod
          pod: {} # Pod To Pod network
        - name: wan
          multus: # Secondary multus network
            networkName: macvtapnetwork
      volumes:
      - name: cdromiso
        persistentVolumeClaim:
          claimName: tiny11-iso-pvc
      - name: harddrive
        persistentVolumeClaim:
          claimName: tiny11-disk-pvc
      - containerDisk:
          image: quay.io/kubevirt/virtio-container-disk
        name: virtiocontainerdisk

and here the macvlan pods logs:

Container: macvtap-cni
Connected
I0920 14:33:00.763596  148344 manager.go:42] Starting device plugin manager
I0920 14:33:00.763644  148344 manager.go:46] Registering for system signal notifications
I0920 14:33:00.763846  148344 manager.go:52] Registering for notifications of filesystem changes in device plugin directory
I0920 14:33:00.764301  148344 manager.go:60] Starting Discovery on new plugins
I0920 14:33:00.764311  148344 manager.go:66] Handling incoming signals
I0920 14:33:00.764383  148344 lister.go:67] Read configuration map[]
I0920 14:33:00.766072  148344 manager.go:71] Received new list of plugins: [ens3 ens4 ens5 ens6]
I0920 14:33:00.766106  148344 manager.go:110] Adding a new plugin "ens6"
I0920 14:33:00.766139  148344 manager.go:110] Adding a new plugin "ens4"
I0920 14:33:00.766126  148344 lister.go:167] Creating device plugin with config {Name:ens6 LowerDevice:ens6 Mode:bridge Capacity:100}
I0920 14:33:00.766157  148344 plugin.go:64] ens6: Starting plugin server
I0920 14:33:00.766161  148344 plugin.go:94] ens6: Starting the DPI gRPC server
I0920 14:33:00.766154  148344 lister.go:167] Creating device plugin with config {Name:ens4 LowerDevice:ens4 Mode:bridge Capacity:100}
I0920 14:33:00.766183  148344 plugin.go:64] ens4: Starting plugin server
I0920 14:33:00.766189  148344 plugin.go:94] ens4: Starting the DPI gRPC server
I0920 14:33:00.766230  148344 manager.go:110] Adding a new plugin "ens5"
I0920 14:33:00.766247  148344 manager.go:110] Adding a new plugin "ens3"
I0920 14:33:00.766261  148344 lister.go:167] Creating device plugin with config {Name:ens5 LowerDevice:ens5 Mode:bridge Capacity:100}
I0920 14:33:00.766277  148344 plugin.go:64] ens5: Starting plugin server
I0920 14:33:00.766279  148344 plugin.go:94] ens5: Starting the DPI gRPC server
I0920 14:33:00.766267  148344 lister.go:167] Creating device plugin with config {Name:ens3 LowerDevice:ens3 Mode:bridge Capacity:100}
I0920 14:33:00.766285  148344 plugin.go:64] ens3: Starting plugin server
I0920 14:33:00.766288  148344 plugin.go:94] ens3: Starting the DPI gRPC server
I0920 14:33:00.766409  148344 plugin.go:112] ens6: Serving requests...
I0920 14:33:00.766411  148344 plugin.go:112] ens3: Serving requests...
I0920 14:33:00.766494  148344 plugin.go:112] ens5: Serving requests...
I0920 14:33:00.766494  148344 plugin.go:112] ens4: Serving requests...
I0920 14:33:10.767876  148344 plugin.go:128] ens6: Registering the DPI with Kubelet
I0920 14:33:10.767916  148344 plugin.go:128] ens4: Registering the DPI with Kubelet
I0920 14:33:10.767947  148344 plugin.go:128] ens5: Registering the DPI with Kubelet
I0920 14:33:10.767936  148344 plugin.go:128] ens3: Registering the DPI with Kubelet
I0920 14:33:10.768245  148344 plugin.go:140] ens6: Registration for endpoint macvtap.network.kubevirt.io_ens6
I0920 14:33:10.768273  148344 plugin.go:140] ens4: Registration for endpoint macvtap.network.kubevirt.io_ens4
I0920 14:33:10.768276  148344 plugin.go:140] ens3: Registration for endpoint macvtap.network.kubevirt.io_ens3
I0920 14:33:10.768302  148344 plugin.go:140] ens5: Registration for endpoint macvtap.network.kubevirt.io_ens5
I0920 14:33:10.771414  148344 manager.go:71] Received new list of plugins: [ens3 ens4 ens5 ens6]
I0920 14:33:10.772405  148344 plugin.go:72] LowerDevice exists, sending ListAndWatch response with available devices
I0920 14:33:10.772446  148344 plugin.go:72] LowerDevice exists, sending ListAndWatch response with available devices
I0920 14:33:10.772398  148344 plugin.go:72] LowerDevice exists, sending ListAndWatch response with available devices
I0920 14:33:10.772535  148344 plugin.go:72] LowerDevice exists, sending ListAndWatch response with available devices

Any idea ?

Thanks for your help ! :)

[Orel Misan]

Hello,

Thank you for reporting this issue.
Please consider posting a bug report on the kubevirt/kubevirt repository [1].

Orel

[1] https://github.com/kubevirt/kubevirt/issues/new/choose

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