Kubectl无法通过I / O超时错误连接到服务器

Question

我正在尝试解决以下问题：

kubectl version
Client Version: version.Info{Major:"1", Minor:"18", GitVersion:"v1.18.6", GitCommit:"dff82dc0de47299ab66c83c626e08b245ab19037", GitTreeState:"clean", BuildDate:"2020-07-15T16:58:53Z", GoVersion:"go1.13.9", Compiler:"gc", Platform:"linux/amd64"}
Unable to connect to the server: dial tcp 192.168.0.10:6443: i/o timeout

我在我试图解决的一些stackoverflow帖子中找到了答案

$kubectl config view 
apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: DATA+OMITTED
    server: https://192.168.0.10:6443
  name: kubernetes
contexts:
- context:
    cluster: kubernetes
    user: kubernetes-admin
  name: kubernetes-admin@kubernetes
current-context: kubernetes-admin@kubernetes
kind: Config
preferences: {}
users:
- name: kubernetes-admin
  user:
    client-certificate-data: REDACTED
    client-key-data: REDACTED

然后，我编写了以下命令，并在下面得到了该命令：

$ kubectl config use-context docker-for-desktop
error: no context exists with the name: "docker-for-desktop"

然后我正在运行sudo docker ps，我在下面得到这张图片：

如何解决Unable to connect to the server错误？

Answer 1

Unable to connect to the server: dial tcp 192.168.0.10:6443: i/o timeout

以上错误表示应该在端口6443上侦听的Kubernetes API Server在kubeadm init进程中未运行。可以通过sudo docker ps | grep api

检查kube API Server容器是否正在运行来验证这一点

禁用交换和重新启动计算机

sudo swapoff -a 
sudo sed -i '/ swap / s/^/#/' /etc/fstab

通过运行以下命令来卸载并重新安装kubernetes

sudo kubeadm reset -f
sudo kubeadm init

如果要在本地系统上尝试kubernetes，则建议使用minikube或kind代替kubeadm。