One of the node in my Kubernetes cluster is using ZFS. I put all my docker images on one of the pool. I found Kubelet is invoking zfs list on that pool every few seconds which makes CPU usage goes to 100%.
Here is the command it’s invoking:
zfs list -r -t all -Hp -o name,origin,used,available,mountpoint,compression,type,volsize,quota,referenced,written,logicalused,usedbydataset zroot/root/docker
I’m wondering where this behavior comes from? Is there any configuration to prevent it or make it less frequent?
Cluster information:
Kubernetes version:
-> kubectl version
Client Version: version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.6", GitCommit:"ad3338546da947756e8a88aa6822e9c11e7eac22", GitTreeState:"archive", BuildDate:"2022-04-29T06:39:1
6Z", GoVersion:"go1.18.1", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.6", GitCommit:"ad3338546da947756e8a88aa6822e9c11e7eac22", GitTreeState:"clean", BuildDate:"2022-04-14T08:43:11Z
", GoVersion:"go1.17.9", Compiler:"gc", Platform:"linux/amd64"}
Cloud being used: (put bare-metal if not on a public cloud)
bare-metal
Installation method:
kubeadm
Host OS:
Arch Linux
CNI and version:
CRI and version:
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