privilegedescalation/headlamp-polaris-plugin

Archived

This repository has been archived on 2026-06-16. You can view files and clone it. You cannot open issues or pull requests or push a commit.

Files

T

Chris Farhood 0776319435 docs: fix remaining hardcoded headlamp namespace to <your-namespace> placeholder

Prior commit was inconsistent — some files used <your-namespace> while
DEPLOYMENT.md, TROUBLESHOOTING.md and several troubleshooting/user-guide
docs still hardcoded headlamp as the namespace.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

2026-05-10 21:34:39 +00:00

2.4 KiB

Raw Blame History

RBAC Issues

Troubleshooting RBAC permissions and 403 errors for the Headlamp Polaris Plugin.

Overview

The plugin requires get permission on services/proxy resource for the polaris-dashboard service in the polaris namespace. Without this permission, you'll see 403 Forbidden errors.

Common Scenarios

403 Forbidden Error

Symptom: Error loading Polaris data, "Access denied (403)" in UI

Cause: Missing or incorrect RBAC binding

Solution:

# 1. Verify RBAC resources exist
kubectl -n polaris get role polaris-proxy-reader
kubectl -n polaris get rolebinding headlamp-polaris-proxy

# If missing, apply RBAC:
kubectl apply -f - <<EOF
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: polaris-proxy-reader
  namespace: polaris
rules:
  - apiGroups: [""]
    resources: ["services/proxy"]
    resourceNames: ["polaris-dashboard"]
    verbs: ["get"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: headlamp-polaris-proxy
  namespace: polaris
subjects:
  - kind: ServiceAccount
    name: headlamp
    namespace: <your-namespace>
roleRef:
  kind: Role
  name: polaris-proxy-reader
  apiGroup: rbac.authorization.k8s.io
EOF

Token-Auth Mode

Symptom: 403 error when using Headlamp with user-supplied tokens

Cause: User's own identity lacks the RoleBinding

Solution:

Bind the Role to authenticated users or specific users/groups:

---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: users-polaris-proxy
  namespace: polaris
subjects:
  - kind: Group
    name: system:authenticated # All authenticated users
    apiGroup: rbac.authorization.k8s.io
roleRef:
  kind: Role
  name: polaris-proxy-reader
  apiGroup: rbac.authorization.k8s.io

Testing Permissions

# Test service account (in-cluster mode)
kubectl auth can-i get services/proxy \
  --as=system:serviceaccount:<your-namespace>:headlamp \
  -n polaris \
  --resource-name=polaris-dashboard

# Test user (token-auth mode)
kubectl auth can-i get services/proxy \
  --as=user@example.com \
  -n polaris \
  --resource-name=polaris-dashboard

# Expected output: yes

For detailed RBAC configuration, see RBAC Permissions.

2.4 KiB Raw Blame History