Kubernetes Context & Namespace Plugin for DMS

A comprehensive DMS (Dank Material Shell) plugin that displays both the current Kubernetes context and namespace in your bar, with the ability to switch between them directly from the UI.

Features

• 🌐 Display Current Context: Shows the active Kubernetes context in the DankBar
• 📁 Display Current Namespace: Shows the active namespace for the current context
• 🔄 Quick Context Switching: Switch between contexts via popup menu
• 📂 Quick Namespace Switching: Switch between namespaces via popup menu
• ⚙️ Configurable Refresh Interval: Set how often to refresh (5-300 seconds)
• 🎨 Customizable Icons: Toggle context and namespace icons on/off
• 📝 Custom Kubeconfig Path: Support for custom kubeconfig file locations
• 🎯 Visual Indicators: Clear visual feedback for active context and namespace
• ⚡ Auto-close Popup: Popup closes automatically after selection

Installation

1. Create the plugin directory:

mkdir -p ~/.config/DankMaterialShell/plugins/kube-context-namespace

2. Clone or copy the plugin files:

cd ~/.config/DankMaterialShell/plugins/
cp -r /home/rmysore/projects/test_plugin_dms_bar kube-context-namespace

Or clone directly:

cd ~/.config/DankMaterialShell/plugins/
git clone <your-repo-url> kube-context-namespace

Usage

1. Enable the Plugin:

   • Open DMS Settings: Super + ,
   • Go to the "Plugins" tab
   • Enable the "Kube Context & Namespace" plugin

2. Configure Settings (optional):

   • Kubeconfig Path: Set custom path (default: ~/.kube/config)
   • Refresh Interval: Adjust refresh rate (default: 15 seconds)
   • Show Context Icon: Toggle context icon display
   • Show Namespace Icon: Toggle namespace icon display

3. Add to DankBar:

   • Add the kube-context-namespace widget to your DankBar configuration

Configuration

Settings

Setting	Description	Default	Range
Kubeconfig Path	Path to your Kubernetes config file	~/.kube/config	Any valid path
Refresh Interval	How often to refresh context/namespace	15 seconds	5-300 seconds
Show Context Icon	Display cloud icon next to context	true	true/false
Show Namespace Icon	Display folder icon next to namespace	true	true/false

Widget Display

Horizontal Bar:

☁️ my-cluster / default

Vertical Bar:

☁️ my-cluster
📁 default

Popup Menu:

• Lists all available contexts (scrollable)
• Lists all available namespaces (scrollable)
• Click to switch
• Visual indicators for active selections

Files

kube-context-namespace/
├── plugin.json           # Plugin manifest and metadata
├── KubeWidget.qml        # Main widget component
├── KubeSettings.qml      # Settings interface
└── README.md             # This file

Permissions

This plugin requires:

• settings_read - To read plugin configurations
• settings_write - To save plugin configurations

Requirements

• kubectl: Command-line tool must be installed and accessible in PATH
• Valid kubeconfig: A valid kubeconfig file at the configured path
• Cluster Access: Active connection to at least one Kubernetes cluster

How It Works

The plugin uses kubectl commands to:

1. Get current context:

   kubectl --kubeconfig ~/.kube/config config current-context

2. Get current namespace:

   kubectl --kubeconfig ~/.kube/config config view --minify --output jsonpath={..namespace}

3. List all contexts:

   kubectl --kubeconfig ~/.kube/config config get-contexts -o name

4. List all namespaces:

   kubectl --kubeconfig ~/.kube/config get namespaces -o jsonpath={.items[*].metadata.name}

5. Switch context:

   kubectl --kubeconfig ~/.kube/config config use-context <context-name>

6. Switch namespace:

   kubectl --kubeconfig ~/.kube/config config set-context --current --namespace=<namespace-name>

All commands respect the configured kubeconfig path.

Comparison with dms-kubernetes

This plugin extends the functionality of the original dms-kubernetes plugin by adding:

Feature	dms-kubernetes	kube-context-namespace
Display Context	✅	✅
Display Namespace	❌	✅
Switch Context	✅	✅
Switch Namespace	❌	✅
List Namespaces	❌	✅
Dual Display	❌	✅
Separate Icons	❌	✅

Troubleshooting

Plugin doesn't show context/namespace

1. Verify kubectl is installed:

   which kubectl

2. Check kubeconfig exists:

   ls -la ~/.kube/config

3. Test kubectl manually:

   kubectl config current-context
   kubectl config view --minify --output jsonpath={..namespace}

Error message in bar

• Check DMS logs for detailed error messages
• Verify kubeconfig path in plugin settings
• Ensure you have access to the cluster

Namespaces not loading

• Verify you have permissions to list namespaces:

  kubectl get namespaces

Development

To modify this plugin:

1. Edit the QML files in ~/.config/DankMaterialShell/plugins/kube-context-namespace/
2. Reload DMS or restart the plugin
3. Check DMS logs for any errors

License

MIT License - Feel free to modify and distribute

Author

Created by rmysore

Acknowledgments

Inspired by psyreactor/dms-kubernetes