# Lens — The Kubernetes IDE for Humans

> Lens is a cross-platform desktop application that turns kubeconfig files into a full Kubernetes IDE with cluster dashboards, live logs, shell access, and built-in Prometheus metrics.

## Install

Save as a script file and run:

# Lens — The Kubernetes IDE for Humans

## Quick Use
```bash
# macOS
brew install --cask lens
# Ubuntu
sudo snap install kontena-lens --classic
# Windows
winget install Mirantis.Lens

# Or download from https://k8slens.dev
# Launch, then File > Add Clusters and point to ~/.kube/config
```

## Introduction
Lens is the most popular graphical Kubernetes client, used by hundreds of thousands of engineers to inspect and troubleshoot clusters without memorizing kubectl flags. It bundles a Monaco-based YAML editor, Helm chart browser, and an embedded Prometheus scraper.

## What Lens Does
- Visualizes every namespace, workload, node, and event in a tree
- Streams pod logs and opens per-container shells in-app
- Runs kubectl under the hood — no server component required
- Shows CPU/memory usage per pod from in-cluster Prometheus
- Installs Helm charts via an integrated repo browser

## Architecture Overview
Lens is an Electron + React app that talks to the Kubernetes API directly using each cluster's kubeconfig. Cluster metrics come from a Lens-managed Prometheus deployment or a user-supplied endpoint. Extensions (npm packages) plug into views, menus, and context menus via a stable API.

## Self-Hosting & Configuration
- Desktop binaries for macOS, Linux, and Windows
- Open-source edition `OpenLens` available from the repo
- Add clusters by importing kubeconfig files or pasting YAML
- Enable Lens Metrics per cluster to auto-deploy Prometheus
- Install community extensions for ArgoCD, Flux, RBAC lookups

## Key Features
- Built-in terminal with kubectl and helm pre-wired to the selected cluster
- Workload topology graphs showing owner chains
- Port-forward manager with click-to-open URLs
- Hotbar for quick cluster switching
- Commercial Lens Desktop Pro adds teams, security, and support

## Comparison with Similar Tools
- **k9s** — terminal UI, much lighter, keyboard-driven
- **Headlamp** — open-source web dashboard from Microsoft
- **Octant** — archived VMware project, similar scope
- **Rancher UI** — cluster-management focused, requires Rancher server
- **kubectl + stern** — scripting, no GUI

## FAQ
**Q:** Is Lens free?
A: The core desktop app is free; OpenLens is the MIT-licensed build. Pro tiers require a paid license.

**Q:** Does Lens need cluster-side agents?
A: No for basic views. Enabling Lens Metrics deploys an in-cluster Prometheus stack.

**Q:** Can I use it offline?
A: Yes — it talks directly to your cluster's API over VPN or locally.

**Q:** Does it support multiple clusters?
A: Yes, with quick switching via the Hotbar and catalog.

## Sources
- https://github.com/lensapp/lens
- https://docs.k8slens.dev/

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Source: https://tokrepo.com/en/workflows/3c062096-38fa-11f1-9bc6-00163e2b0d79
Author: Script Depot