I have a lxd/3.0.3 cluster with fan network running smooth for one year.
Today, I just delete a stopped container on a node, then tragedy happened:
the fanbr0 lost its ip address, all conntainers on the node was unreachable from other node
/var/log/lxd/lxd.log
t=2020-08-26T13:42:16+0800 lvl=info msg="Done pruning expired images" t=2020-08-26T16:45:17+0800 lvl=info msg="Deleting container" created=2018-08-13T22:26:30+0800 ephemeral=false name=u1604 used=2019-05-26T15:48:20+0800 t=2020-08-26T16:45:21+0800 lvl=info msg="Deleted container" created=2018-08-13T22:26:30+0800 ephemeral=false name=u1604 used=2019-05-26T15:48:20+0800
at the same time, fan interface got removed too âŠ
Aug 26 16:45:20 dxc1 kernel: [39743274.216544] device fanbr0-mtu left promiscuous mode
Aug 26 16:45:20 dxc1 kernel: [39743274.216551] fanbr0: port 1(fanbr0-mtu) entered disabled state
Aug 26 16:45:20 dxc1 kernel: [39743274.259105] fanbr0: port 2(fanbr0-fan) entered disabled state
Aug 26 16:45:20 dxc1 kernel: [39743274.259320] device fanbr0-fan left promiscuous mode
Aug 26 16:45:20 dxc1 kernel: [39743274.259322] fanbr0: port 2(fanbr0-fan) entered disabled state
Aug 26 16:45:20 dxc1 NetworkManager[912]: <info> [1598431520.8627] device (fanbr0-fan): state change: disconnected -> unmanaged (reason 'unmanaged') [30 10 3]
Aug 26 16:45:20 dxc1 NetworkManager[912]: <info> [1598431520.8782] devices removed (path: /sys/devices/virtual/net/fanbr0-fan, iface: fanbr0-fan)
Aug 26 16:45:20 dxc1 NetworkManager[912]: <info> [1598431520.8791] devices removed (path: /sys/devices/virtual/net/fanbr0-mtu, iface: fanbr0-mtu)
Aug 26 16:45:21 dxc1 NetworkManager[912]: nm_device_get_device_type: assertion 'NM_IS_DEVICE (self)' failed
Aug 26 16:45:21 dxc1 kernel: [39743274.566557] device fanbr0-mtu entered promiscuous mode
Aug 26 16:45:21 dxc1 NetworkManager[912]: <info> [1598431521.1038] manager: (fanbr0-mtu): new Generic device (/org/freedesktop/NetworkManager/Devices/82)
Aug 26 16:45:21 dxc1 NetworkManager[912]: <info> [1598431521.3210] devices added (path: /sys/devices/virtual/net/fanbr0-mtu, iface: fanbr0-mtu)
Aug 26 16:45:21 dxc1 NetworkManager[912]: <info> [1598431521.3211] device added (path: /sys/devices/virtual/net/fanbr0-mtu, iface: fanbr0-mtu): no ifupdown configuration found.
its weird that delete a stopped container can bring down fan inteface , pls help .