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There were many similar questions on SO(Kubernetes metrics-server FailedDiscoveryCheck)

Mine is specific cause I have k3s cluster.

kubectl get apiservices
v1beta1.metrics.k8s.io                 kube-system/metrics-server   False (FailedDiscoveryCheck)   5d2h

My nodes

NAME    STATUS   ROLES                  AGE    VERSION
k3s-1   Ready    control-plane,master   5d2h   v1.26.2+k3s1
k3s-2   Ready    <none>                 5d2h   v1.26.2+k3s1
k3s-3   Ready    <none>                 5d2h   v1.26.2+k3s1

I checked deployment

spec:
      containers:
      - args:
        - --cert-dir=/tmp
        - --secure-port=10250
        - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
        - --kubelet-use-node-status-port
        - --metric-resolution=15s

should I change preferred address-types?

MikiBelavista
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