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https://github.com/ahmetb/kubectx

Faster way to switch between clusters and namespaces in kubectl
https://github.com/ahmetb/kubectx

kubectl kubectl-plugins kubernetes kubernetes-clusters

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Faster way to switch between clusters and namespaces in kubectl

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# `kubectx` + `kubens`: Power tools for kubectl



![Latest GitHub release](https://img.shields.io/github/release/ahmetb/kubectx.svg)

![GitHub stars](https://img.shields.io/github/stars/ahmetb/kubectx.svg?label=github%20stars)

![Homebrew downloads](https://img.shields.io/homebrew/installs/dy/kubectx?label=macOS%20installs)

[![Go implementation (CI)](https://github.com/ahmetb/kubectx/workflows/Go%20implementation%20(CI)/badge.svg)](https://github.com/ahmetb/kubectx/actions?query=workflow%3A"Go+implementation+(CI)")

![Proudly written in Bash](https://img.shields.io/badge/written%20in-bash-ff69b4.svg)



This repository provides both `kubectx` and `kubens` tools.

[Install →](#installation)



## What are `kubectx` and `kubens`?



**kubectx** is a tool to switch between contexts (clusters) on kubectl

faster.


**kubens** is a tool to switch between Kubernetes namespaces (and

configure them for kubectl) easily.



Here's a **`kubectx`** demo:

![kubectx demo GIF](img/kubectx-demo.gif)



...and here's a **`kubens`** demo:

![kubens demo GIF](img/kubens-demo.gif)



### Examples



```sh

# switch to another cluster that's in kubeconfig

$ kubectx minikube

Switched to context "minikube".



# switch back to previous cluster

$ kubectx -

Switched to context "oregon".



# rename context

$ kubectx dublin=gke_ahmetb_europe-west1-b_dublin

Context "gke_ahmetb_europe-west1-b_dublin" renamed to "dublin".



# change the active namespace on kubectl

$ kubens kube-system

Context "test" set.

Active namespace is "kube-system".



# go back to the previous namespace

$ kubens -

Context "test" set.

Active namespace is "default".

```



If you have [`fzf`](https://github.com/junegunn/fzf) installed, you can also

**interactively** select a context or cluster, or fuzzy-search by typing a few

characters. To learn more, read [interactive mode →](#interactive-mode)



Both `kubectx` and `kubens` support Tab completion on bash/zsh/fish

shells to help with long context names. You don't have to remember full context

names anymore.



-----



## Installation



Stable versions of `kubectx` and `kubens` are small bash scripts that you

can find in this repository.



Starting with v0.9.0, `kubectx` and `kubens` **are now rewritten in Go**.  They

should work the same way (and we'll keep the bash-based implementations around)

but the new features will be added to the new Go programs.  Please help us test

this new Go implementation by downloading the binaries from the [**Releases page

→**](https://github.com/ahmetb/kubectx/releases)



**Installation options:**



- [as kubectl plugins (macOS & Linux)](#kubectl-plugins-macos-and-linux)

- [with Homebrew (macOS & Linux)](#homebrew-macos-and-linux)

- [with MacPorts (macOS)](#macports-macos)

- [with apt (Debian)](#apt-debian)

- [with pacman (Arch Linux)](#pacman-arch-linux)

- [with Chocolatey (Windows)](#windows-installation-using-chocolatey)

- [Windows Installation (using Scoop)](#windows-installation-using-scoop)

- [with winget (Windows)](#windows-installation-using-winget)

- [manually (macOS & Linux)](#manual-installation-macos-and-linux)



If you like to add context/namespace information to your shell prompt (`$PS1`),

you can try out [kube-ps1].



[kube-ps1]: https://github.com/jonmosco/kube-ps1



### Kubectl Plugins (macOS and Linux)



You can install and use the [Krew](https://github.com/kubernetes-sigs/krew/) kubectl

plugin manager to get `kubectx` and `kubens`.



**Note:** This will not install the shell completion scripts. If you want them,

*choose another installation method

or install the scripts [manually](#manual-installation-macos-and-linux).



```sh

kubectl krew install ctx

kubectl krew install ns

```



After installing, the tools will be available as `kubectl ctx` and `kubectl ns`.



### Homebrew (macOS and Linux)



If you use [Homebrew](https://brew.sh/) you can install like this:



```sh

brew install kubectx

```



This command will set up bash/zsh/fish completion scripts automatically. Make sure you [configure your shell](https://docs.brew.sh/Shell-Completion) to load completions for installed Homebrew formulas.



### MacPorts (macOS)



If you use [MacPorts](https://www.macports.org) you can install like this:



```sh

sudo port install kubectx

```



### apt (Debian)



``` bash

sudo apt install kubectx

```

Newer versions might be available on repos like

[Debian Buster (testing)](https://packages.debian.org/buster/kubectx),

[Sid (unstable)](https://packages.debian.org/sid/kubectx)

(_if you are unfamiliar with the Debian release process and how to enable

testing/unstable repos, check out the

[Debian Wiki](https://wiki.debian.org/DebianReleases)_):



### pacman (Arch Linux)



Available as official Arch Linux package. Install it via:



```bash

sudo pacman -S kubectx

```



### Windows Installation (using Chocolatey)



Available as packages on [Chocolatey](https://chocolatey.org/why-chocolatey)

```pwsh

choco install kubens kubectx

```



### Windows Installation (using Scoop)



Available as packages on [Scoop](https://scoop.sh/)

```pwsh

scoop bucket add main

scoop install main/kubens main/kubectx

```



### Windows Installation (using winget)



Available as packages on [winget](https://learn.microsoft.com/en-us/windows/package-manager/)

```pwsh

winget install --id ahmetb.kubectx

winget install --id ahmetb.kubens

```



### Manual Installation (macOS and Linux)



Since `kubectx` and `kubens` are written in Bash, you should be able to install

them to any POSIX environment that has Bash installed.



- Download the `kubectx`, and `kubens` scripts.

- Either:

  - save them all to somewhere in your `PATH`,

  - or save them to a directory, then create symlinks to `kubectx`/`kubens` from

    somewhere in your `PATH`, like `/usr/local/bin`

- Make `kubectx` and `kubens` executable (`chmod +x ...`)



Example installation steps:



``` bash

sudo git clone https://github.com/ahmetb/kubectx /opt/kubectx

sudo ln -s /opt/kubectx/kubectx /usr/local/bin/kubectx

sudo ln -s /opt/kubectx/kubens /usr/local/bin/kubens

```



If you also want to have shell completions, pick an installation method for the

[completion scripts](completion/) that fits your system best: [`zsh` with

`antibody`](#completion-scripts-for-zsh-with-antibody), [plain

`zsh`](#completion-scripts-for-plain-zsh),

[`bash`](#completion-scripts-for-bash) or

[`fish`](#completion-scripts-for-fish).



#### Completion scripts for `zsh` with [antibody](https://getantibody.github.io)



Add this line to your [Plugins File](https://getantibody.github.io/usage/) (e.g.

`~/.zsh_plugins.txt`):



```

ahmetb/kubectx path:completion kind:fpath

```



Depending on your setup, you might or might not need to call `compinit` or

`autoload -U compinit && compinit` in your `~/.zshrc` after you load the Plugins

file. If you use [oh-my-zsh](https://github.com/ohmyzsh/ohmyzsh), load the

completions before you load `oh-my-zsh` because `oh-my-zsh` will call

`compinit`. 



#### Completion scripts for plain `zsh`



The completion scripts have to be in a path that belongs to `$fpath`. Either

link or copy them to an existing folder.



Example with [`oh-my-zsh`](https://github.com/ohmyzsh/ohmyzsh):



```bash

mkdir -p ~/.oh-my-zsh/custom/completions

chmod -R 755 ~/.oh-my-zsh/custom/completions

ln -s /opt/kubectx/completion/_kubectx.zsh ~/.oh-my-zsh/custom/completions/_kubectx.zsh

ln -s /opt/kubectx/completion/_kubens.zsh ~/.oh-my-zsh/custom/completions/_kubens.zsh

echo "fpath=($ZSH/custom/completions $fpath)" >> ~/.zshrc

```



If completion doesn't work, add `autoload -U compinit && compinit` to your

`.zshrc` (similar to

[`zsh-completions`](https://github.com/zsh-users/zsh-completions/blob/master/README.md#oh-my-zsh)).



If you are not using [`oh-my-zsh`](https://github.com/ohmyzsh/ohmyzsh), you

could link to `/usr/share/zsh/functions/Completion` (might require sudo),

depending on the `$fpath` of your zsh installation.



In case of errors, calling `compaudit` might help.



#### Completion scripts for `bash`



```bash

git clone https://github.com/ahmetb/kubectx.git ~/.kubectx

COMPDIR=$(pkg-config --variable=completionsdir bash-completion)

ln -sf ~/.kubectx/completion/kubens.bash $COMPDIR/kubens

ln -sf ~/.kubectx/completion/kubectx.bash $COMPDIR/kubectx

cat << EOF >> ~/.bashrc



#kubectx and kubens

export PATH=~/.kubectx:\$PATH

EOF

```



#### Completion scripts for `fish`



```fish

mkdir -p ~/.config/fish/completions

ln -s /opt/kubectx/completion/kubectx.fish ~/.config/fish/completions/

ln -s /opt/kubectx/completion/kubens.fish ~/.config/fish/completions/

```



-----



### Interactive mode



If you want `kubectx` and `kubens` commands to present you an interactive menu

with fuzzy searching, you just need to [install

`fzf`](https://github.com/junegunn/fzf) in your `$PATH`.



![kubectx interactive search with fzf](img/kubectx-interactive.gif)



If you have `fzf` installed, but want to opt out of using this feature, set the

environment variable `KUBECTX_IGNORE_FZF=1`.



If you want to keep `fzf` interactive mode but need the default behavior of the

command, you can do it by piping the output to another command (e.g. `kubectx |

cat `).



-----



### Customizing colors



If you like to customize the colors indicating the current namespace or context,

set the environment variables `KUBECTX_CURRENT_FGCOLOR` and

`KUBECTX_CURRENT_BGCOLOR` (refer color codes

[here](https://linux.101hacks.com/ps1-examples/prompt-color-using-tput/)):



```sh

export KUBECTX_CURRENT_FGCOLOR=$(tput setaf 6) # blue text

export KUBECTX_CURRENT_BGCOLOR=$(tput setab 7) # white background

```



Colors in the output can be disabled by setting the

[`NO_COLOR`](https://no-color.org/) environment variable.



-----



If you liked `kubectx`, you may like my

[`kubectl-aliases`](https://github.com/ahmetb/kubectl-aliases) project, too. I

recommend pairing kubectx and kubens with [fzf](#interactive-mode) and

[kube-ps1].



#### Stargazers over time



[![Stargazers over time](https://starchart.cc/ahmetb/kubectx.svg)](https://starchart.cc/ahmetb/kubectx)

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