aluxian / fish-kube-prompt

⎈ kubectl context/namespace in your fish shell prompt

fish-kube-prompt

⎈ kubectl context/namespace in your fish shell prompt

Install

mkdir -p ~/.config/fish/functions/
cd ~/.config/fish/
git clone https://github.com/aluxian/fish-kube-prompt
ln -s ../fish-kube-prompt/functions/__kube_prompt.fish functions/
ln -s ../fish-kube-prompt/functions/kube_ps.fish functions/

Then create or edit ~/.config/fish/functions/fish_prompt.fish to include __kube_prompt:

function fish_prompt
  echo -s (set_color blue) (__kube_prompt) (set_color $fish_color_cwd) " " (prompt_pwd) (set_color normal) "> "
end

Speed

Running the kubectl commands to get the context and namespace every time the prompt is shown would slow down the prompt significantly. Therefore, fish-kube-prompt caches the context and namespace by only calling kubectl when the env var KUBECONFIG has changed since the last cache update, or when the 'last modified' timestamp of the files in KUBECONFIG is newer than the timestamp of the last cache update.

This was not my idea, I took it from jonmosco/kube-ps1.

Config

You can toggle the prompt on or off like this:

kube_ps on
kube_ps off

kube_ps is a simple function that just updates a universal variable __kube_ps_enabled.

Many choices have been hard-coded (e.g. colors, delimiters). If there's anything you'd like to customize, please add an env var and send a PR.

Credits

Inspired from the awesome work of:

• https://github.com/jonmosco/kube-ps1
• https://github.com/Ladicle/fish-kubectl-prompt

Author

Alexandru Rosianu (https://github.com/aluxian/dotfiles-fish)

License

MIT

fish-kube-prompt's Issues

Change default color for cluster context and namespace

It would be great if we could set default colors for context/namespace.

Something like jonmosco/kube-ps1#colors.

kind request to support fishkit

https://github.com/fisherman/fishkit
best regards

stat: cannot read file system information for '%m': No such file or directory

I ran into following error trying to use your prompt. On every call there is:

/usr/bin/stat: cannot read file system information for '%m': No such file or directory
/bin/test: extra argument ‘    ID: 74a6a6b4b6341869 Namelen: 255     Type: ext2/ext3’

This issue is different that #1. It's probably OS dependent, but on Fedora there parameters for stat looks different.

       -f, --file-system
              display file system status instead of file status

       -c  --format=FORMAT
              use the specified FORMAT instead of the default; output a newline after each use of FORMAT

In addition:

       %m     mount point

and:

       %Y     time of last data modification, seconds since Epoch

To make it work on Fedora 27 with stat 8.27 I needed to change the stat call to:

/usr/bin/stat -c '%Y' "$conf"

stat: cannot read file system information

Hi,

first of all thanx for this prompt functions, a great solution for me :)

I have encountered some problem, this is the error/warning message:

stat: cannot read file system information for '%m': No such file or directory
test: Expected a combining operator like '-a' at index 1

Thank you

ctx not updated

Hi,

the context don't change after using kctx -.
I don't know if this is only a macos problem, I use fish version 2.7.1.

There is other init or configuration steps?

tx

Make fish-kube-prompt avaiable as ohmyfish plugin

Hello,

thank you so much for this wonderful tool. Would it be possible to make this plugin available in oh-my-fish as a plugin?

Cheers - Willi