https://github.com/engineerd/kube-exec

Lightweight Golang package for executing commands in remote Kubernetes pods
https://github.com/engineerd/kube-exec

Last synced: 4 months ago
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Lightweight Golang package for executing commands in remote Kubernetes pods

• Host: GitHub
• URL: https://github.com/engineerd/kube-exec
• Owner: engineerd
• License: mit
• Created: 2018-01-06T13:50:49.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2019-02-22T06:24:14.000Z (almost 6 years ago)
• Last Synced: 2024-08-01T06:20:55.670Z (7 months ago)
• Language: Go
• Homepage: https://engineerd.github.io/kube-exec/introduction/
• Size: 511 KB
• Stars: 93
• Watchers: 2
• Forks: 7
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • License: LICENSE
  • Code of conduct: CODE_OF_CONDUCT.md

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README

        
kube-exec

=========

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`kube-exec` is a library similar to [`os/exec`][1] that allows you to run commands in a Kubernetes pod, as if that command was executed locally.

> It is inspired from [`go-dexec`][2] by [ahmetb][3], which does the same thing, but for a Docker engine.

The interface of the package is similar to `os/exec`, and essentially this:

- creates a new pod in Kubernetes based on a user-specified image

- waits for the pod to be in [`Running`](https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/) state

- attaches to the pod and allows you to stream data to the pod through `stdin`, and from the pod back to the program through `stdout` and `stderr`

How to use it

-------------

```go

cfg := kube.Config{

	Kubeconfig: os.Getenv("KUBECONFIG"),

	Image:      "ubuntu",

	Name:       "kube-example",

	Namespace:  "default",

}

cmd := kube.Command(cfg, "/bin/sh", "-c", "sleep 2; echo Running from Kubernetes pod;")

cmd.Stdout = os.Stdout

err := cmd.Run()

if err != nil {

	log.Fatalf("error: %v", err)

}

```

Here's a list of full examples you can find in this repo:

- [simple hello example](/examples/hello/main.go)

- [pass `stdin` to the pod](/examples/stdin/main.go)

- [pass Kubernetes secrets as environment variables](/examples/secrets/main.go)

[1]: https://golang.org/pkg/os/exec

[2]: https://github.com/ahmetb/go-dexec

[3]: https://twitter.com/ahmetb

[4]: /examples/main.go