OpenShift node shows NotReady because of "Kubelet stopped posting node status."

Solution Verified - Updated -

Issue

  • oc get node(s) shows the node is in NotReady status.
[root@ocp37master ~]# oc get node                                   
NAME          STATUS                     AGE       VERSION          
ocp37master   Ready,SchedulingDisabled   3h        v1.7.6+a08f5eeb62
ocp37node1    Ready                      3h        v1.7.6+a08f5eeb62
ocp37node2    NotReady                   3h        v1.7.6+a08f5eeb62
  • And from oc describe node/ocp37node2 command, there is a error message says Kubelet stopped posting node status.
Conditions:                                                                                                                                                                    
  Type                  Status          LastHeartbeatTime                       LastTransitionTimeReason                   Message                                             
  ----                  ------          -----------------                       ------------------------                   -------                                             
  OutOfDisk             Unknown         Mon, 05 Feb 2018 15:34:21 +0900         Mon, 05 Feb 2018 15:35:04 +0900    NodeStatusUnknown       Kubelet stopped posting node status.
  MemoryPressure        Unknown         Mon, 05 Feb 2018 15:34:21 +0900         Mon, 05 Feb 2018 15:35:04 +0900    NodeStatusUnknown       Kubelet stopped posting node status.
  DiskPressure          Unknown         Mon, 05 Feb 2018 15:34:21 +0900         Mon, 05 Feb 2018 15:35:04 +0900    NodeStatusUnknown       Kubelet stopped posting node status.
  Ready                 Unknown         Mon, 05 Feb 2018 15:34:21 +0900         Mon, 05 Feb 2018 15:35:04 +0900    NodeStatusUnknown       Kubelet stopped posting node status.

Environment

  • OpenShift Container Platform
    • 3.7
    • 3.9

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