Kubernetes 加入主节点报错

现象

原因：
之前已经加入过一次

解决方案

[root@k8s-node01 k8s_images]# kubeadm reset
[reset] WARNING: Changes made to this host by 'kubeadm init' or 'kubeadm join' will be reverted.
[reset] Are you sure you want to proceed? [y/N]: y
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