Kubernetes 加入主节点报错

现象：

[root@k8s-node01 k8s_images]# kubeadm join 192.168.**.**:6443 --token b01y9k.dmiclmvg976u1rzb \
>     --discovery-token-ca-cert-hash sha256:e2bbb51848bdb45eee214349345f2cfa91819b32c559d506cee3c9f1bed231 
[preflight] Running pre-flight checks
error execution phase preflight: [preflight] Some fatal errors occurred:
    [ERROR FileAvailable--etc-kubernetes-kubelet.conf]: /etc/kubernetes/kubelet.conf already exists
    [ERROR FileAvailable--etc-kubernetes-bootstrap-kubelet.conf]: /etc/kubernetes/bootstrap-kubelet.conf already exists
    [ERROR Port-10250]: Port 10250 is in use
    [ERROR FileAvailable--etc-kubernetes-pki-ca.crt]: /etc/kubernetes/pki/ca.crt already exists
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`

原因：

之前已经加入过一次

 

解决办法：

重置后重新加入

[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