为什么当我进入 Kubernetes pod 时会出现 exec failed:container_linux.go:380 ？

Question

我开始学习 Kubernetes，并在 Windows 7 上安装了 minikube 和 kubectl。

之后我使用命令创建了一个 pod：

kubectl run firstpod --image=nginx

一切都很好：

[![在此处输入图像描述][1]][1]

现在我想使用此命令进入 pod 内部：kubectl exec -it firstpod -- /bin/bash但它不起作用，并且出现此错误：

OCI runtime exec failed: exec failed: container_linux.go:380: starting container
 process caused: exec: "C:/Program Files/Git/usr/bin/bash.exe": stat C:/Program
Files/Git/usr/bin/bash.exe: no such file or directory: unknown
command terminated with exit code 126

我该如何解决这个问题？

另一个问题是关于这个firstpodPod 的。使用此命令kubectl describe pod firstpod我可以查看有关 pod 的信息：

Name:         firstpod
Namespace:    default
Priority:     0
Node:         minikube/192.168.99.100
Start Time:   Mon, 08 Nov 2021 16:39:07 +0200
Labels:       run=firstpod
Annotations:  <none>
Status:       Running
IP:           172.17.0.3
IPs:
  IP:  172.17.0.3
Containers:
  firstpod:
    Container ID:   docker://59f89dad2ddd6b93ac4aceb2cc0c9082f4ca42620962e4e692e3d6bcb47d4a9e
    Image:          nginx
    Image ID:       docker-pullable://nginx@sha256:644a70516a26004c97d0d85c7fe1d0c3a67ea8ab7ddf4aff193d9f301670cf36
    Port:           <none>
    Host Port:      <none>
    State:          Running
      Started:      Mon, 08 Nov 2021 16:39:14 +0200
    Ready:          True
    Restart Count:  0
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-9b8mx (ro)
Conditions:
  Type              Status
  Initialized       True
  Ready             True
  ContainersReady   True
  PodScheduled      True
Volumes:
  kube-api-access-9b8mx:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   BestEffort
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
  Type    Reason     Age   From               Message
  ----    ------     ----  ----               -------
  Normal  Scheduled  32m   default-scheduler  Successfully assigned default/firstpod to minikube
  Normal  Pulling    32m   kubelet            Pulling image "nginx"
  Normal  Pulled     32m   kubelet            Successfully pulled image "nginx" in 3.677130128s
  Normal  Created    31m   kubelet            Created container firstpod
  Normal  Started    31m   kubelet            Started container firstpod

所以我可以看到它是一个 docker 容器 id 并且它已启动，也有图像，但如果我这样做docker images或docker ps什么也没有。这些图像和容器在哪里？谢谢你！[1]： https: //i.stack.imgur.com/xAcMP.jpg

Answer 1

一个肯定的错误是 gitbash 添加 Windows 路径。您可以使用双斜杠禁用它：

kubectl exec -it firstpod -- //bin/bash

仅当映像中有 bash 时，此命令才有效。如果不这样做，您将需要选择一个不同的命令来运行，例如/bin/sh。有些镜像是无发行版的或基于暂存的，明确不包含 shell 之类的东西，这将阻止您运行这样的命令（为了安全起见，是故意的）。