Manually hot-plugged interfaces don't work
networkop opened this issue · 2 comments
I'm trying to test the network interface hot-plug functionality with kata and docker.
I create two docker containers with kata-runtime, and interconnect them manually, i.e. by creating a veth link and ip link set netns each side to each individual namespace. As the result I do see them with ip netns exec <name> ip link command, but they are not plugged into the VM.
I'm not sure if this is supposed to work if kata relies on interfaces being added by CNM/CNI?
I think you’ll want to take a look at Kata-netmon. If you add multiple devices at pod creation time, it’ll work fine. For network hotplug, you’ll need a service that is looking for net link events in the netns. I believe that’s what the intention of kata-netmon is.
I haven’t tested this recently - there may be gaps in 2.0 release in supporting this. It should be working with 1.x branch. kata-containers/kata-containers#1154