Blank page for kubernetes Jupyterlab

JupyterLab
,
1

I would like to deploy just jupyterlab on my k3s server. It works fine when I use the LAN ip and port to access it but when I put it behind my nginx reverse proxy, after login I get a blank screen.

  apiVersion: v1
  kind: Namespace
  metadata:
    name: jupyterlab
  ---
  apiVersion: v1
  kind: PersistentVolumeClaim
  metadata:
    name: jupyterlab-pvc
    namespace: jupyterlab
  spec:
    accessModes:
      - ReadWriteOnce
    resources:
      requests:
        storage: 10Gi  # Adjust the size as needed
    storageClassName: "longhorn"  # This should be your default storage class
  
  ---
  apiVersion: apps/v1
  kind: Deployment
  metadata:
    name: jupyterlab
    namespace: jupyterlab
  spec:
    replicas: 1
    selector:
      matchLabels:
        app: jupyterlab
    template:
      metadata:
        labels:
          app: jupyterlab
      spec:
        securityContext:
          fsGroup: 1000
        containers:
        - name: jupyterlab
          image: jupyter/datascience-notebook
          ports:
          - containerPort: 8888
          volumeMounts:
          - mountPath: "/home/jovyan"
            name: jupyter-storage
          resources:
            requests:
              memory: "10Gi"
              cpu: "2"
          securityContext:
            runAsUser: 1000  # User ID for the user jovyan
        volumes:
        - name: jupyter-storage
          persistentVolumeClaim:
            claimName: jupyterlab-pvc
  
  ---
  apiVersion: v1
  kind: Service
  metadata:
    name: jupyterlab
    namespace: jupyterlab
  spec:
    type: LoadBalancer
    loadBalancerIP: 192.168.1.151
    ports:
    - port: 8888
      targetPort: 8888
    selector:
      app: jupyterlab

I am using the GUI of nginx reverse proxy and all I do is put the IP, port, and assign SSL. I do not have any error when I inspect console and there are no errors on container side too. Is there an added step I am missing?

My reverse proxy is also running behind Cloudflare I am not sure if that is also causing an issue.

Screenshot 2023-12-11 at 13.33.15
Screenshot 2023-12-11 at 13.33.15500×543 25.6 KB

2

i have a simmilar problem. Also launching with nginx, not doing anything other than connect the domain with localhost running voila.
Voila loading screen shows up for a second, then instead of widgets, I see
Output() instead of the actual window. All packages are newest.
This setup also seems to work locally, but for some reason doesn’t with nginx.

3

Did you every manage to fix this? I’m having exactly the same symptoms, but with JupyterHub hidden behind a university firewall.