kubectl-exec:

Kubectl-exec is an interactive bash script that allows you to perform tasks on Windows and Linux kubernetes nodes. Such as accessing nodes shell, mounting a node filesystem, and accessing nodes filesystem in an easy-to-use web interface.

Key Features

Access Windows/Linux nodes shell interactively

Access Windows/Linux nodes shell non-interactively

Mount Windows/Linux filesystem to pod, can be used to explore or transfer files.

Expose a web based file manager for managing files and folders and transfer data between nodes and your local machine.

How it works:

For Linux:
It works by creating a pod (with a priviledged container) in the node you specified and using nsenter for getting a shell into your kuberntes nodes.

The created pod is from alpine official image which is ~2.6 mb in size, once you exit the shell, the pod will be deleted.

For Windows::
It works by creating a pod and using Windows SSH credentials to access Windows node or mounting the filesystem to the linux pod.

Why using linux pods to access Windows nodes ?
This is because windows container images are large in size 3GB+; instead, we are using a linux alpine image that is less than 3MB.

Notice: Windows nodes supports only nodes with OpenSSH installed. https://docs.microsoft.com/en-us/windows-server/administration/openssh/openssh_install_firstuse

This have been tested on AKS nodes which has OpenSSH installed by default.

Installation:

wget https://github.com/mohatb/kubectl-exec/raw/master/kubectl-exec
chmod +x ./kubectl-exec
sudo mv ./kubectl-exec /usr/local/bin/kubectl-exec

Updating:

sudo rm -rf $(which kubectl-exec)
wget https://github.com/mohatb/kubectl-exec/raw/master/kubectl-exec
chmod +x ./kubectl-exec
sudo mv ./kubectl-exec /usr/local/bin/kubectl-exec

Usage:

Interactive:
    kubectl-exec
    
Non-Interactive:
    kubectl-exec NodeName

Examples:
    Access node shell:
    kubectl-exec
    kubectl-exec NodeName
    
    Mount The host filesystem to priviliged pod:
    kubectl-exec -mount
    kubectl-exec -mount NodeName

    Access node filesystem with web interface in the browser:
    kubectl-exec -filemanager
    kubectl-exec -filemanager NodeName

Troubleshooting:

Please refer to troubleshooting section Troubleshooting

Contributing

We welcome pull requests with open arms! There's a lot of work to do here, and we're especially concerned with ensuring the longevity and reliability of the project.

License

This project is licensed under the Apache License, Version 2.0.

liuyuexizhi/kubectl-exec