升级kube出现unknown flag: --network-plugin

把一台node 的kube升级从 1.22.0-0.x86_64到 1.24.1-0.x86_64后， 出现kubelet.service无法启动。 Error: failed to parse kubelet flag: unknown flag: --network-plugin

node1状态显示NotRready

[[email protected] ~]# rpm -qa|grep kube
kubeadm-1.24.1-0.x86_64
kubernetes-cni-0.8.7-0.x86_64
kubectl-1.24.1-0.x86_64
kubelet-1.22.0-0.x86_64

[[email protected] ~]# journalctl -xe -l
Jun 12 03:27:04 node1 kubelet[7103]: Error: failed to parse kubelet flag: unknown flag: --network-plugin
Jun 12 03:27:04 node1 kubelet[7103]: Usage:

[[email protected] ~]# kubectl get nodes
NAME     STATUS     ROLES                  AGE    VERSION
master   Ready      control-plane,master   302d   v1.22.0
node1    NotReady   <none>                 294d   v1.22.0
node2    Ready      <none>                 294d   v1.22.0
 

 

法一：

yum downgrade 后restart正常

[[email protected] ~]# yum downgrade kubelet-1.22.0-0.x86_64 kubeadm-1.22.0-0.x86_64 kubectl-1.22.0-0.x86_64

[[email protected] ~]# rpm -qa|grep kube
kubernetes-cni-0.8.7-0.x86_64
kubectl-1.22.0-0.x86_64
kubelet-1.22.0-0.x86_64
kubeadm-1.22.0-0.x86_64

[[email protected] ~]# systemctl restart kubelet.service 
Warning: kubelet.service changed on disk. Run 'systemctl daemon-reload' to reload units.

[[email protected] ~]# systemctl daemon-reload
[[email protected] ~]# 
[[email protected] ~]# 
[[email protected] ~]# systemctl restart kubelet.service 

[[email protected] ~]# systemctl status kubelet.service -l
● kubelet.service - kubelet: The Kubernetes Node Agent
   Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)
  Drop-In: /usr/lib/systemd/system/kubelet.service.d
           └─10-kubeadm.conf
   Active: active (running) since Sun 2022-06-12 03:58:31 EDT; 5s ago
     Docs: https://kubernetes.io/docs/
 Main PID: 14546 (kubelet)

方法二：

使用链接提到的方法： 

Kubernetes 升级至 1.24 后 kubelet 无法启动_已解决_博问_博客园