A custom Powerline segment for displaying the current Kubernetes context and namespace.

$ pip install powerline-k8s

Add the following config items to your Powerline colorscheme config file (usually located at ~/.config/powerline/colorschemes/), see Powerline Colorschemes for more info.

{
  "k8s":           { "fg": "solarized:blue", "bg": "solarized:base02", "attrs": [] },
  "k8s_namespace": { "fg": "solarized:red",  "bg": "solarized:base02", "attrs": [] },
  "k8s_context":   { "fg": "solarized:blue", "bg": "solarized:base02", "attrs": [] },
  "k8s:divider":   { "fg": "gray4",          "bg": "solarized:base02", "attrs": [] }
}

Add the following config item to your Powerline segments config file, see Powerline Segment reference for more info.

{
  "function": "powerline_k8s.k8s",
  "priority": 30
}

• If adding the segment to the shell, edit ~/.config/powerline/themes/shell/default.json.
• If adding the segment to the tmux status line, edit ~/.config/powerline/themes/tmux/default.json.

If your Kubernetes config file is not in the default location ~/.kube/config, you can point to it by setting the value of the $KUBECONFIG environment variable to where your config file is.

Toggle entire segment or specific section's visibility with the following environment variables:

• POWERLINE_K8S_SHOW
• POWERLINE_K8S_SHOW_NS

Note: Full segment visibility takes precedence over namespace section visibility.

# toggle segment visibility
$ POWERLINE_K8S_SHOW=0 powerline-daemon --replace # hide powerline-k8s segment
$ POWERLINE_K8S_SHOW=1 powerline-daemon --replace # show powerline-k8s segment (default)

# toggle namespace section visibility
$ POWERLINE_K8S_SHOW_NS=0 powerline-daemon --replace # hide namespace section
$ POWERLINE_K8S_SHOW_NS=1 powerline-daemon --replace # show namespace section (default)

Alternatively you can add the following function to your shell for easier toggling:

toggle_powerline_k8s() {
  case "$1" in
    # pass the '-ns' flag to toggle namespace visibility
    "-ns" | "--namespace")
      if [[ "${POWERLINE_K8S_SHOW_NS:-1}" -eq 1 ]]; then
        export POWERLINE_K8S_SHOW_NS=0
      else
        export POWERLINE_K8S_SHOW_NS=1
      fi
    ;;
    *)
      # toggle segment visibility
      if [[ "${POWERLINE_K8S_SHOW:-1}" -eq 1 ]]; then
        export POWERLINE_K8S_SHOW=0
      else
        export POWERLINE_K8S_SHOW=1
      fi
    ;;
  esac
}