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Quick Install:
curl -fsSL https://get.radarhq.io | sh
Homebrew:
brew install skyhook-io/tap/radar
Then run: kubectl radar (or simply radar)
Krew (kubectl plugin manager):
kubectl krew install radar
Scoop (Windows):
scoop bucket add skyhook https://github.com/skyhook-io/scoop-bucket
scoop install radar
PowerShell (Windows):
irm https://get.radarhq.io/install.ps1 | iex
Direct download — GitHub Releases for macOS, Linux, or Windows.
Native desktop app — no terminal needed.
Homebrew (macOS):
brew install --cask skyhook-io/tap/radar-desktop
Debian/Ubuntu:
sudo apt install ./radar-desktop_*.deb
Fedora/RHEL:
sudo rpm -i radar-desktop_*.rpm
Scoop (Windows):
scoop bucket add skyhook https://github.com/skyhook-io/scoop-bucket
scoop install radar-desktop
Windows (direct download) — GitHub Releases.
Deploy to your cluster for shared team access:
helm repo add skyhook https://skyhook-io.github.io/helm-charts
helm install radar skyhook/radar -n radar --create-namespace
See the In-Cluster Deployment Guide for ingress, authentication, and RBAC configuration.
# Opens browser automatically
kubectl radar
# Or simply
radar
CLI Flags
| Flag | Default | Description |
|---|---|---|
--kubeconfig | ~/.kube/config | Path to kubeconfig file |
--kubeconfig-dir | Comma-separated directories containing kubeconfig files | |
--namespace | (all) | Initial namespace filter (supports multi-select in the UI; also used as RBAC fallback for namespace-scoped users) |
--namespace-scope | false | Pin namespaced informer caches to a single namespace for large clusters (scoping to multiple namespaces is not supported yet). Requires --namespace, a kubeconfig context namespace, or a saved local single-namespace pick. Local mode can rebuild the cache when switching namespaces; auth/cloud mode locks the shared cache to the startup namespace. |
--port | 9280 | Server port |
--no-browser | false | Don't auto-open browser |
--browser | Browser to use when opening the UI, e.g. firefox, google-chrome, or on macOS |
Google Chrome--timeline-storage | memory | Timeline storage backend: memory or sqlite |
--timeline-db | ~/.radar/timeline.db | Path to SQLite database (when using sqlite storage) |
--timeline-max-size | 1Gi | Maximum SQLite DB + WAL size before pruning oldest events (e.g. 800Mi, 8Gi; 0 disables) |
--history-limit | 10000 | Maximum events to retain in timeline |
--disable-exec | false | Disable terminal and debug shell |
--disable-helm-write | false | Disable Helm write operations |
--disable-local-terminal | false | Disable local terminal feature |
--debug-image | busybox:latest | Image for ephemeral debug containers and node debug pods. If built-in restricted PodSecurity rejects the default pod debug container, Radar retries with a restricted-compatible Linux security context using the target/pod non-root UID, or UID 65532 by default; point at a compatible mirror for air-gapped / private-registry clusters. |
--list-page-size | 0 (off) | Paginate the initial LIST of high-cardinality kinds (Pods, ReplicaSets) at this size. Helps very large clusters that fail to sync; only used when WatchList streaming is unavailable. Try 2000. |
--context-switch-timeout | 30s | Maximum time a kubeconfig context switch may take. Widen on high-latency control planes — see Tuning for slow clusters. Env: RADAR_CONTEXT_SWITCH_TIMEOUT. |
--first-paint-backstop | 5m | Hard upper bound on the initial critical-cache sync wait before Radar falls through to a partial-data render. Env: RADAR_FIRST_PAINT_BACKSTOP. |
--namespace-list-timeout | 5s | Timeout for the cluster-wide namespace LIST used to decide if the user is RBAC-namespace-restricted. A timeout on a slow control plane is misreported in the UI as "Limited list — RBAC". Env: RADAR_NAMESPACE_LIST_TIMEOUT. |
--max-scope-candidates | 20 | Cap on the namespace-fallback probe fanout (used by accounts that can list namespaces cluster-wide but not list a specific kind cluster-wide). Raise above 20 for clusters with more than 20 namespaces. Env: RADAR_MAX_SCOPE_CANDIDATES. |
--prometheus-url | (auto-discover) | Manual Prometheus/VictoriaMetrics URL (skips auto-discovery) |
--prometheus-header | HTTP header sent with every Prometheus request, format Key=Value (repeatable). Required for auth-protected backends. |
--prometheus-header-from-env | HTTP header sent with every Prometheus request, sourced from an environment variable, format Key=ENV_VAR (repeatable). |
--auth-mode | none | Authentication mode: none, proxy, or oidc (details) |
--no-mcp | false | Disable MCP server for AI tool integration |
--mcp-catalog-stdio | false | Start only the MCP catalog over stdio for registry introspection |
--version | Show version and exit |
See Configuration Guide for details on cluster connection precedence, multiple kubeconfig files, and context switching.
The default deadlines (30 s context switch, 5 m first-paint backstop, 5 s namespace LIST, 20 scope candidates) are tuned for healthy clusters reached over fast, low-latency connections. They are too tight for clusters reached over SSH tunnels, geographically distant control planes, or accounts subject to API-server throttling, where they surface as one of three symptoms:
Widen the four flags via CLI or via the matching environment variables
(RADAR_CONTEXT_SWITCH_TIMEOUT, RADAR_FIRST_PAINT_BACKSTOP,
RADAR_NAMESPACE_LIST_TIMEOUT, RADAR_MAX_SCOPE_CANDIDATES) — env vars
keep secrets out of ps and let in-cluster deployments source the values
from a ConfigMap:
# CLI
kubectl radar \
--context-switch-timeout=120s \
--first-paint-backstop=10m \
--namespace-list-timeout=30s \
--max-scope-candidates=200
# Environment (e.g. in a Deployment manifest)
RADAR_CONTEXT_SWITCH_TIMEOUT=120s \
RADAR_FIRST_PAINT_BACKSTOP=10m \
RADAR_NAMESPACE_LIST_TIMEOUT=30s \
RADAR_MAX_SCOPE_CANDIDATES=200 \
kubectl radar
Defaults are preserved when neither the flag nor the env var is set, so existing deployments are unaffected.
| Navigate rows (resources, helm) |
g g / G | Jump to first / last row |
Enter / d | Open selected resource detail |
y | Open YAML view |
l | Open logs (pods/workloads) |
[ / ] | Previous / next resource kind |
Escape | Close panel/modal/search |
Topology: Pan (drag), Zoom (scroll), Select (click), Multi-select (Shift+click)