executing the command kubectl get --raw /apis/metrics.k8s.io/v1beta1 it returned Error from server (ServiceUnavailable): the server is currently unable to handle the request
view the logs from metrics-server
http: TLS handshake error from 192.168.133.64:51926:EOF
kubelet version is 1.12.3
metrics-server 0.3.1
i have another clusters-set with the same version and configuration, metrics-server works just fine
part of metrics-server-deployment: containers: - name: metrics-server image: k8s.gcr.io/metrics-server-amd64:v0.3.1 imagePullPolicy: Always command: - /metrics-server - --kubelet-insecure-tls volumeMounts: - name: tmp-dir mountPath: /tmp
Looks like it is failing because the hostname resolution happens through the internal DNS system which have pods/service entries but not cluster node entries.
Try running your metrics-server with following arguments:
- command:
- /metrics-server
- --kubelet-insecure-tls
- --kubelet-preferred-address-types=InternalIPIt should work for you as well.
For more info you can look at the following issue here
Hope this helps.