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When using kubectl get node-owide, a node notready, and then using sudo systemctl status kubelet, the output is as follows:

(base) supermap@openbox00:~/openthings/kubernetes-tools$ sudo systemctl status kubelet ● kubelet.service-kubelet: The Kubernetes Node Agent Loaded: loaded (/ lib/systemd/system/kubelet.service; enabled; vendor preset: enabled) Drop-In: / etc/systemd/system/kubelet.service.d └─ 10-kubeadm.conf Active: active (running) since Fri 2021-04-09 22:30:35 CST 3 weeks 1 days ago Docs: https://kubernetes.io/docs/home/ Main PID: 2657 (kubelet) Tasks: 17 (limit: 18741) Memory: 182.0M CGroup: / system.slice/kubelet.service └─ 2657 / usr/bin/kubelet-bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf-kubeconfig=/etc/kubernetes/kubelet.conf-config=/var/lib/kubelet/config.yaml-cgroup-driver=systemd -- net > May 02 18:49:13 openbox00 kubelet [2657]: {May 02 18:49:13 openbox00 kubelet [2657]: "type": "portmap" May 02 18:49:13 openbox00 kubelet [2657]: "capabilities": {May 02 18:49:13 openbox00 kubelet [2657]: "portMappings": true5 02 18:49:13 openbox00 kubelet [2657]:} May 02 18:49:13 openbox00 kubelet [2657]:} May 02 18:49:13 openbox00 kubelet [2657]:] May 02 18:49:13 openbox00 kubelet [2657]:} May 02 18:49:13 openbox00 kubelet [2657]:: [failed to find plugin "flannel" in path [/ opt/cni/bin] failed to find plugin "portmap" in path [/ opt/cni/bin]] May 02 18:49:13 openbox00 kubelet [2657]: W0502 18 flannel 49 cni.go:239 13.163614 2657 cni.go:239] Unable to update cni config: no valid networks found in / etc/cni/net.d [4] + sudo systemctl status kubelet has been stopped

It probably means that there is something wrong with cni.

Check / opt/cni/bin and find that the directory inside is empty and should not be.

Ls-l / opt/cni/bin

Reinstall kubernetes cni. During the process, you found that kubelet and kubeadm were also uninstalled. Reinstall:

Sudo apt remove kubernetes-cnisudo apt install kubernetes-cni kubelet kubeadm

Then use sudo systemctl status kubelet and kubectl get node-owide to check the status of the service and node and return to normal.

However, the node used to work normally, and it is not clear what caused the problem.

Thank you for your reading, the above is the content of "kubernetes appears failed to find plugin" portmap "in path [/ opt/cni/bin]] how to solve", after the study of this article, I believe you have a deeper understanding of how kubernetes appears failed to find plugin "portmap" in path [/ opt/cni/bin]], and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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