故障

报错：[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.

原因：执行初始化安装命令
kubeadm init .........
报错故障：
[etcd] Creating static Pod manifest for local etcd in "/etc/kubernetes/manifests"
[wait-control-plane] Waiting for the kubelet to boot up the control plane as static Pods from directory "/etc/kubernetes/manifests". This can take up to 4m0s
[kubelet-check] Initial timeout of 40s passed.
[kubelet-check] It seems like the kubelet isn't running or healthy.

[kubelet-check] It seems like the kubelet isn't running or healthy.

[kubelet-check] It seems like the kubelet isn't running or healthy.

[kubelet-check] It seems like the kubelet isn't running or healthy.

[kubelet-check] It seems like the kubelet isn't running or healthy.

问题分析：

之前我的Docker是用yum安装的，docker的cgroup驱动程序默认设置为system。默认情况下Kubernetes cgroup为systemd，我们需要更改Docker cgroup驱动，

解决方法

添加以下内容

vim /etc/docker/daemon.json

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

# 重启docker
systemctl restart docker

# 重新初始化
kubeadm reset # 先重置

kubeadm init \
--apiserver-advertise-address=192.168.42.122  \
--image-repository registry.aliyuncs.com/google_containers \
--kubernetes-version v1.22.2 \
--service-cidr=10.96.0.0/12 \
--pod-network-cidr=10.244.0.0/16 \
--ignore-preflight-errors=all