1、报错信息

[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.
[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.
[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.
[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.

[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.

host:10248/healthz": dial tcp [::1]:10248: connect: connection refused.

Unfortunately, an error has occurred:

timed out waiting for the condition

This error is likely caused by:

- The kubelet is not running

- The kubelet is unhealthy due to a misconfiguration of the node in some way (required cgroups disabled)

解决：

根据上述描述，是因为“kebernetes默认设置cgroup驱动为systemd，而docker服务的cgroup驱动为cgroupfs”，有两种决解决方式，方式一，将docker的服务配置文件修改为何kubernetes的相同，方式二是修改kebernetes的配置文件为cgroupfs，这里采用第一种。

修改docker服务的配置文件，“/etc/docker/daemon.json ”文件，添加如下

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

注意：如果之前设置了阿里云镜像加速，需要在之前的配置用，分割，否则会报错，重启不了docker，如下

{
  "registry-mirrors": ["https://qaisuteo.mirror.aliyuncs.com"],
  "exec-opts": ["native.cgroupdriver=systemd"]
}

重启docker即可

sudo systemctl daemon-reload

sudo systemctl restart docker

重新init，k8s，必须重启，否则会报错端口占用

        [WARNING SystemVerification]: this Docker version is not on the list of validated versions: 26.1.1. Latest validated version: 20.10
error execution phase preflight: [preflight] Some fatal errors occurred:
        [ERROR Port-6443]: Port 6443 is in use
        [ERROR Port-10259]: Port 10259 is in use
        [ERROR Port-10257]: Port 10257 is in use

kubeadm reset