dask-labextension: Failed to list clusters: might the server extension not be installed/enabled?

Hello,

I’m having troubles to get my dashboard setup on a SageMaker notebook instance.

Tests I’ve done:

- Checked serverextension list:
(JupyterSystemEnv) sh-4.2$ jupyter serverextension list
config dir: /home/ec2-user/.jupyter
    jupyterlab_git  enabled 
    - Validating...
Error loading server extension jupyterlab_git
      X is jupyterlab_git importable?
config dir: /home/ec2-user/anaconda3/etc/jupyter
    dask_labextension  enabled 
    - Validating...
      dask_labextension 1.0.3 OK
    ipyparallel.nbextension  enabled 
    - Validating...
      ipyparallel.nbextension  OK
    jupyter_server_proxy  enabled 
    - Validating...
      jupyter_server_proxy  OK
    jupyterlab  enabled 
    - Validating...
      jupyterlab 0.32.1 OK
    nbdime  enabled 
    - Validating...
      nbdime 1.1.0 OK
    nb_conda  enabled 
    - Validating...
      nb_conda 2.2.1 OK

copy-pasted the url below in the extension search box

Nothing much happens doing that.

The pop up error “Failed to list clusters: might the server extension not be installed/enabled?” show up when disabling/enabling the lab extension.

Tried: https://github.com/dask/dask-labextension/issues/61#issuecomment-515786252

Any ideas?

About this issue

Original URL
State: closed
Created 5 years ago
Comments: 21 (8 by maintainers)

Most upvoted comments

A quick note if you don’t mind your dashboard being exposed to the internet on some obscure URL you can always proxy it with serveo. Bit of a hacky workaround but thought I’d share anyway.

Once you have your Dask cluster running in Sagemaker you can open a terminal and run ssh -R 80:localhost:8787 serveo.net where localhost:8787 is the host and port of your dashboard relative to the notebook server. It will probably ask you to accept some host keys but then it will print a URL where your dashboard will be available.

In this example the subdomain virgo was randomly assigned but you can also override this if you check the serveo docs.

jacobtomlinson on May 20, 2020

okay,

jupyter serverextension enable dask_labextension

solved the problem, although I am running jupyter notebook 6.0.2

dschick on Nov 13, 2019