docker - 在短时间内杀死/重启容器是正常的docker daemon吗？

Question

我们开始监视k8s集群中的docker事件，并注意到在很短的时间内，各种容器的Kill/Die/Stop/Destroy很多。

那是正常的吗？ (我认为不是)

显然不是容量问题:

Conditions:
  Type             Status  LastHeartbeatTime                 LastTransitionTime                Reason                       Message
  ----             ------  -----------------                 ------------------                ------                       -------
  OutOfDisk        False   Thu, 16 Aug 2018 11:19:30 -0300   Tue, 14 Aug 2018 14:02:37 -0300   KubeletHasSufficientDisk     kubelet has sufficient disk space available
  MemoryPressure   False   Thu, 16 Aug 2018 11:19:30 -0300   Tue, 14 Aug 2018 14:02:37 -0300   KubeletHasSufficientMemory   kubelet has sufficient memory available
  DiskPressure     False   Thu, 16 Aug 2018 11:19:30 -0300   Tue, 14 Aug 2018 14:02:37 -0300   KubeletHasNoDiskPressure     kubelet has no disk pressure
  PIDPressure      False   Thu, 16 Aug 2018 11:19:30 -0300   Fri, 11 May 2018 16:37:48 -0300   KubeletHasSufficientPID      kubelet has sufficient PID available
  Ready            True    Thu, 16 Aug 2018 11:19:30 -0300   Tue, 14 Aug 2018 14:02:37 -0300   KubeletReady                 kubelet is posting ready status

所有Pod显示状态为“正在运行”

关于如何进一步调试的任何技巧？

Answer 1

您可以在运行pod的节点主机上按以下命令检查docker容器的状态。

docker inspect <container id>

更多选择是here

事件日志和日记日志对调试很有帮助。

kubectl get events

journalctl --no-pager