解决kubectl 8080 was refused和x509: certificate signed by unknown authority的问题

Dear 丶 2021-12-18 23:49 393阅读 0赞

### 文章目录 ###

*  解决kubectl 8080 was refused和x509: certificate signed by unknown authority的问题
 *   *  错误
     *  在Master上的解决方案
     *  在Node上的解决方案
     *  参考文档

# 解决kubectl 8080 was refused和x509: certificate signed by unknown authority的问题 #

## 错误 ##

未指定API Server报错：

[root@k8s-node1 kubeadm_v1.13.0]# kubectl get pods --all-namespaces
    The connection to the server localhost:8080 was refused - did you specify the right host or port?

指定API Server后报错：

[root@k8s-node1 kubeadm_v1.13.0]# kubectl get pods --all-namespaces -s https://192.168.87.152:6443
    Unable to connect to the server: x509: certificate signed by unknown authority

## 在Master上的解决方案 ##

mkdir -p $HOME/.kube
    sudo cp /etc/kubernetes/admin.conf $HOME/.kube/config
    sudo chown $(id -u):$(id -g) $HOME/.kube/config
    cp -p $HOME/.bash_profile $HOME/.bash_profile.bak$(date '+%Y%m%d%H%M%S')
    echo "export KUBECONFIG=$HOME/.kube/config" >> $HOME/.bash_profile
    source $HOME/.bash_profile

测试：

kubectl get nodes
    kubectl get pods --all-namespaces

## 在Node上的解决方案 ##

和Master上的方案的区别是使用`/etc/kubernetes/kubelet.conf`而不是`/etc/kubernetes/admin.conf`。

mkdir -p $HOME/.kube
    sudo cp /etc/kubernetes/kubelet.conf $HOME/.kube/config
    sudo chown $(id -u):$(id -g) $HOME/.kube/config
    cp -p $HOME/.bash_profile $HOME/.bash_profile.bak$(date '+%Y%m%d%H%M%S')
    echo "export KUBECONFIG=$HOME/.kube/config" >> $HOME/.bash_profile
    source $HOME/.bash_profile

测试：

kubectl get nodes
    kubectl get pods --all-namespaces

## 参考文档 ##

*  [https://github.com/kubernetes/kubernetes/issues/48378][https_github.com_kubernetes_kubernetes_issues_48378]

[https_github.com_kubernetes_kubernetes_issues_48378]: https://github.com/kubernetes/kubernetes/issues/48378