Kubelet Feature Gates from MD annotations are not going through

[CallMeFoxie]

Hi
I have got a MachineDeployment object with metadata like this:

metadata:
  annotations:
    v1.kubelet-featuregates.machine-controller.kubermatic.io/DRAConsumableCapacity: "true"
    v1.kubelet-featuregates.machine-controller.kubermatic.io/DRADeviceTaints: "true"
    v1.kubelet-featuregates.machine-controller.kubermatic.io/DRAExtendedResource: "true"
    v1.kubelet-featuregates.machine-controller.kubermatic.io/DRAPrioritizedList: "true"
    v1.kubelet-featuregates.machine-controller.kubermatic.io/DynamicResourceAllocation: "true"
    v1.kubelet-featuregates.machine-controller.kubermatic.io/ResourceHealthStatus: "true"

which is taken from Machine-Controller's code here https://github.com/kubermatic/machine-controller/blob/main/sdk/apis/cluster/common/consts.go#L181 but I cannot find any place where it would be used around here ? https://github.com/kubermatic/operating-system-manager/blob/main/pkg/controllers/osc/resources/operating_system_config.go#L465

am I overlooking something? Because the output kubeletConfig does NOT have these featuregates enabled or even templated in the output OSC.

Thanks
Ashley

[kron4eg]

Looks like you're right, v1.kubelet-featuregates.machine-controller.kubermatic.io is not used in the OSM as in the free-form, we only take predefined feature-gates.

[CallMeFoxie]

Glad I have not overlooked something :-)

I have implemented my own "solution" some time ago, where are all "unknown" v1.kubelet-config.machine-controller.kubermatic.io/whatever are sent into the OSP template as .OtherValues.whatever so I can just update the OSP without having to patch OSM/MC. Meaning I just added v1.kubelet-config.machine-controller.kubermatic.io/featureflags which I unpack in the OSP template myself as a workaround. (We use our own OSP templates as we run a private openstack cloud anyways.)

Is this something to be fixed and documented or to be cleaned from the code?

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