agent 方式、kubeconfig方式 的 文件浏览器、追踪日志、bash 均无法正常使用 about kuboard-press

[hanxinhang]

尝试发现：kubectl logs 、kubectl exec 均无法正常执行

分析发现：
E0118 02:20:15.214418 1 status.go:71] apiserver received an error that is not an metav1.Status: &errors.errorString{s:"error dialing backend: dial tcp 10.2.xx.xxx:10250: operation was canceled"}: error dialing backend: dial tcp 10.2.xx.xxx:10250: operation was canceled

结论：
所有节点开放 kubelet 与 apiserver 通信的端口 10250
ufw allow 10250/tcp