我正在使用 Kubeadm 在笔记本电脑的 Oracle Virtualbox 上安装 Kubernetes。一切正常，直到我在 Kuberenets Worker 节点上运行此命令以加入 Master 节点我在运行后收到错误
sudo kubeadm join 192.168.56.100:6443 --token 0i2osm.vsp2mk63v1ypeyjf --discovery-token-ca-cert-hash sha256:18511321fcc4b622628dd1ad2f56dbdd319bf024740d58127818720828cc7bf0
错误
[preflight] Running pre-flight checks
[WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kubernetes.io/docs/setup/cri/
error execution phase preflight: [preflight] Some fatal errors occurred:
[ERROR DirAvailable--etc-kubernetes-manifests]: /etc/kubernetes/manifests is not empty
[ERROR FileAvailable--etc-kubernetes-kubelet.conf]: /etc/kubernetes/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 …