报错如下：

[kubelet-check] Initial timeout of 40s passed.
[kubelet-check] It seems like the kubelet isn't running or healthy.
[kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10248/healthz' failed with error: Get "http://localhost:10248/healthz": dial tcp [::1]:10248: connect: connection refused.

error execution phase wait-control-plane: couldn't initialize a Kubernetes cluster

在使用docker安装k8s的时候，有一个很重要的小细节，就是docker默认使用的Cgroup Driver是cgroupfs，安装报错，那么就需要使用systemd作为cgroup

解决方法：

vim /etc/docker/daemon.json

添加以下内容

{
"exec-opts":["native.cgroupdriver=systemd"]
}

#应用配置并重启docker
systemctl daemon-reload
systemctl restart docker

此时，重新使用kubeadm初始化就没问题了

在初始化之前还要重置以前的初始化

kubeadm reset
rm -rf /etc/kubernetes/manifests/kube-apiserver.yaml
rm -rf  /etc/kubernetes/manifests/kube-controller-manager.yaml
rm -rf  /etc/kubernetes/manifests/kube-scheduler.yaml
rm -rf  /etc/kubernetes/manifests/etcd.yaml
rm -rf /var/lib/etcd/*