问Kubernetes Kubectl exec如何工作以及如何对其进行故障排除

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有没有人可以分享kubectl exec的工作原理，比如技术概述。另外，有哪些方法可以排除故障。

例如，我有以下问题:当尝试连接到pod时：

kubectl.exe : I0502 04:25:18.562064 7288 loader.go:357]配置从文件C:\Users\u615648/.kube/config加载，第1行:1 char:1 + .\kubectl.exe exec dataarchives service-264802370-mjwcl date -n fdm- ... +~+ CategoryInfo : NotSpecified：(I0502 04:25:18...48/.kube/ Config :String) []，RemoteException + FullyQualifiedErrorId : NativeCommandError

I0502 04:25:18.636776 7288 round_trippers.go:414] GET https://fdmmgmt.uksouth.cloudapp.azure.com/api/v1/namespaces/fdm-development/pods/dataarchives-service-264802370-mjwcl I0502 04:25:18.636776 7288 round_trippers.go:421]请求标头: I0502 04:25:18.636776 7288 round_trippers.go:424] Accept: application/json，/ I0502 04:25:18.636776 7288 round_trippers.go:424]用户代理: kubectl.exe/v1.9.3 (windows/amd64) kubernetes/d283541 I0502 04:25:18.716758 7288 round_trippers.go:439]响应状态: 79毫秒内200 OK I0502 04:25:18.716758 7288 round_trippers.go:442]响应头: I0502 04:25:18.716758 7288 round_trippers.go:445]内容类型：应用程序/json I0502 04:25:18.716758 7288 round_trippers.go:445]内容长度: 3167 I0502 04:25:18.716758 7288 round_trippers.go:445]日期:星期三，02 2018年05月04:25:18格林尼治标准时间04:25:18 I0502 04:25:18.717872 request.go:873]响应体：{"kind":"Pod"，"apiVersion":"v1"，"metadata":{"name":"dataarchives-service-264802370-mjwcl"，"generateName":"da taarchives I0502-264802370-“，”namespace“：”fdm-request.go:873“，fdm"uid":"eeb7d14f-49 5e-11e8-9d96-002248014205"，"resourceVersion":"15681866"，"creationTimestamp":"2018-04-26T14:34:31Z"，“labels”：{“app”：“dataarchive”，"pod-template-hash":"264802370"}，"annot app \"apiVersion\":\"v1\"，\“参考\”：{\“种类\”：\“复制集\”，\“命名空间\”：\“fdm-开发\”，\"n名称\“：\”数据存档-服务-264802370\“，\"uid\":\"eeaf949c-495e-11e8-9d96-002248014205\"，\”ame版本\“：\”扩展\“，\”资源版本\“：\”15075652\“}}\n”}，"ownerRefe rence“：{”apiVersion“：”扩展/v1beta1“，"kind":"ReplicaSet"，“name”：“dataarchives service-264802370”，"uid":"eeaf949c-495e-11e8-9d96-002248014205"，“ReplicaSet”：true，"b lockOwnerDeletion":true}}，"spec":{"volumes":[{"name":"uploadsfileshare truncated 2143 chars I0502 04:25:18.908749 7288 round_trippers.go:414] POST https://fdmmgmt.uksouth.cloudapp.azure.com/api/v1/namespaces/fdm-development/pods/dataarchives-service-26480237 https://fdmmgmt.uksouth.cloudapp.azure.com/api/v1/namespaces/fdm-development/pods/dataarchives-service-26480237 I0502 04:25:18.908749 7288 round_trippers.go:421]请求标头: I0502 04:25:18.908749 7288 round_trippers.go:424]

X-流-协议-版本: v4.channel.k8s.io I0502 04:25:18.908749

7288 round_trippers.go:424] X流协议版本: v3.channel.k8s.io I0502 04:25:18.908749 7288 round_trippers.go:424] X流协议版本: v2.channel.k8s.io I0502 04:25:18.908749

7288 round_trippers.go:424] X流-协议-版本: channel.k8s.io I0502 04:25:18.908749 7288 round_trippers.go:424]

用户代理: kubectl.exe/v1.9.3 (windows/amd64) kubernetes/d283541 I0502 04:25:19.086745 7288 round_trippers.go:439]响应状态: 401在177毫秒内未授权I0502 04:25:19.086745 7288 round_trippers.go:442]响应头: I0502 04:25:19.086745 7288 round_trippers.go:445]日期:星期三，02 2018年5月04:25:19 GMT I0502 04:25:19.086745 7288 round_trippers.go:445] Content-Length: 12 I0502 04:25:19.086745 7288 round_trippers.go:445] Content-Type: text/plain；字符集=utf-8 F0502 04:25:19.086745 7288 helpers.go:119]错误:无法升级连接:未授权

感谢你的帮助。