kns - Quick kubectl namespace switcher

kns.bash

#!/bin/bash

# kns lets you select a kubernetes namespace in seconds. Autocomplete,
# type-ahead, everything! (tested in bash and zsh)
kns() {
  local current
  local namespace
  local selected
  if [[ ! -x "$(which fzf 2>/dev/null)" ]]; then
    echo "please install: github.com/junegunn/fzf" >&2
    return 1
  fi
  current="$(kubectl config current-context)"
  namespace="$(kubectl config get-contexts "$current" | awk "/$current/ {print \$5}")"
  if [[ -z "$namespace" ]]; then
    namespace="default"
  fi
  selected=$( (kubectl get namespaces -o name | sed "s-namespaces/--"; echo $namespace ) | fzf -0 -1 --tac --prompt "$current> ")
  if [[ ! -z "$selected" ]]; then
    kubectl config set-context "$current" "--namespace=$selected"
    echo "Set to \"$selected\"."
  fi
}

# I love this alias:
#alias k=kubectl

This is great.

For it to work with Kubectl 1.6 you will need to update this line https://gist.github.com/koenbollen/342c138b6a77d3de6869aad68c193617#file-kns-bash-L18 to

selected=$( (kubectl get namespaces -o name | sed "s-namespace/--"; echo $namespace ) | fzf -0 -1 --tac --prompt "$current> ")

Remove the s from namespaces when you sed 👍

Thanks @niels-s!

See https://github.com/blendle/kns