解决 kubelet cannot allocate memory 错误

解决 kubelet cannot allocate memory 错误

2022-2-27
Technology
Kubelet, Kubernetes

问题描述 #

查看 pod 相关 events 如下：

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Events:
  Type     Reason                    Age                   From               Message
  ----     ------                    ----                  ----               -------
  Normal   Scheduled                 18m                   default-scheduler  Successfully assigned container-186002196200947712/itms-5f6d7798-wrpjj to 10.206.65.144
  Warning  FailedCreatePodContainer  3m31s (x71 over 18m)  kubelet            unable to ensure pod container exists: failed to create container for [kubepods burstable pod31f4c93c-c3a1-49ad-b091-0802c5f1d396] : mkdir /sys/fs/cgroup/memory/kubepods/burstable/pod31f4c93c-c3a1-49ad-b091-0802c5f1d396: cannot allocate memory

这是内核bug，建议升级内核