kubernetes - 无法kubectl连接我的kubernetes集群

Question

随着Kubernetes集群的建立和运行，并能够使用ssh-keys通过ssh转到主服务器并在其中运行kubectl命令；我想在本地计算机上运行kubectl命令。因此，我尝试按照kubectl config设置配置:

kubectl config set-cluster mykube --server=https://<master-ip>:6443
kubectl config set-context mykube --cluster=mykube --user=mykube-adm
kubectl config set-credentials mykube-adm --client-key=path/to/private/keyfile 

激活上下文:

kubectl config use-context mykube

当我运行kubectl命令时:

kubectl get nodes

它返回:

The connection to the server localhost:8080 was refused - did you specify the right host or port?

kubectl config view的输出

apiVersion: v1
clusters:
- cluster:
    server: https://<master-ip>:6443
  name: mykubecontexts:
- context:
    cluster: mykube
    user: mykube-adm
  name: mykube
current-context: mykube
kind: Config
preferences: {}
users:
- name: mykube-adm
  user:
    client-key: path/to/private/keyfile

Answer 1

不幸的是，上面的kubectl配置文件不正确。由于手动格式化或其他原因，似乎出现了错误。

这部分(name: mykubecontexts:)中缺少新行:

clusters:
- cluster:
    server: https://<master-ip>:6443
  name: mykubecontexts:
- context:
    cluster: mykube
    user: mykube-adm
  name: mykube

正确的是:

clusters:
- cluster:
    server: https://<master-ip>:6443
  name: mykube
contexts:
- context:
    cluster: mykube
    user: mykube-adm
  name: mykube

这就是集群名称为 mykubecontexts:的原因:

clusters:
- cluster:
    server: https://<master-ip>:6443
  name: mykubecontexts:

这就是为什么其中没有上下文的原因，因为未定义 contexts:。
kubectl找不到上下文 mykube，并切换到默认值，其中 server=localhost:8080默认为。

如果未设置 kubectl标志或 ${HOME}/.kube/config环境变量，则默认情况下 --kubeconfig配置位于 $KUBECONFIG文件中。

请更正以下内容:

apiVersion: v1
clusters:
- cluster:
    server: https://<master-ip>:6443
  name: mykube
contexts:
- context:
    cluster: mykube
    user: mykube-adm
  name: mykube
current-context: mykube
kind: Config
preferences: {}
users:
- name: mykube-adm
  user:
    client-key: path/to/private/keyfile