kubelet: Failed to create summary reader for ...

[jaohaohsuan]

Hello everyone: I got little problems of running kubelet, everything runs well except below info:

1137 container.go:352] Failed to create summary reader for "/machine.slice/kubelet.service": none of the resources are being tracked.

1137 container.go:352] Failed to create summary reader for "/machine.slice/kubelet.service/system.slice/hyperkube.service": none of the resources are being tracked.

Anything wrong of my cloud-config? The kubelet-wrapper haven't been changed.

this is my part of cloud-config

  - name: rkt-metadata.socket
    command: start
  - name: rkt-metadata.service
    command: start
  - name: kubelet.service
    content: |
      [Service]
      Slice=machine.slice
      ExecStartPre=/usr/bin/mkdir -p /etc/kubernetes/manifests
      Environment="RKT_OPTS=--net=host --volume var-lib-rkt,kind=host,source=/var/lib/rkt --mount volume=var-lib-rkt,target=/var/lib/rkt"
      Environment=KUBELET_VERSION=v1.3.7_coreos.0
      ExecStart=/usr/lib/coreos/kubelet-wrapper \
        --register-node=false \
        --config=/etc/kubernetes/manifests \
        --allow-privileged=true
      Restart=always
      RestartSec=10
  - name: docker.service
    drop-ins:
    - name: shared-mounts.conf
      content: |
        [Service]
        MountFlags=
        MountFlags=shared
  - name: rkt-api.service
    command: start
    content: |
      [Unit]
      After=network.target

      [Service]
      ExecStart=/usr/bin/rkt api-service --listen=0.0.0.0:15441

      [Install]
      WantedBy=multi-user.target