Virtual Environments, Jupyter Notebook, and SSH

[Timothée Stassin]

Hi,

I am new to Sepal, trying to setup my workspace on the platform. So maybe the answer to my questions is more related to the approach I am following than to debugging.

For my project, I have created a dedicated folder and set up and activated a python virtual environment, with following commands in Sepal terminal:

pip install virtualenv

mkdir my_project

cd my_project

python3.8 -m venv env

source env/bin/activate

I have then installed using pip a series of packages, including jupyter notebook. Since there is no browser, I assume I need to connect with SSH to Sepal (remote server) from my laptop (local machine), to be able to run jupyter notebook --no-browser.

I fetched the IP address of the remote server using the command hostname -I. When I try to connect to it from my local machine using the command ssh my_username@IP_address, I get the following error:

ssh: connect to host IP_address port 22: Connection timed out

Thanks in advance for the assistance !

Cheers,

Tim

[Timothée Stassin]

Another user (thanks !) provided me the answer for the first step.

The right command to connect to Sepal with via SSH is:

me@local:~$ ssh my_use...@ssh.sepal.io -p 443

Now comes the second step, starting jupyter notebook and port forwarding:

me@sepal:~$ cd my_project

me@sepal:~$ source env/bin/activate

(env) me@sepal:~/my_project$ jupyter notebook --no-browser --port=8891

    To access the notebook, open this file in a browser:
        file:///home/my_user_name/.local/share/jupyter/runtime/nbserver-861-open.html
    Or copy and paste one of these URLs:
        http://localhost:8891/?token=12345abcde12345abcde12345abcde12345abcde
     or http://127.0.0.1:8891/?token= 12345abcde12345abcde12345abcde12345abcd

me@local:~$ ssh -N -f -L localhost 8888:localhost:8891 my_use...@ssh.sepal.io

and... nothing happens. And if I try opening localhost:8888 in browser, also nothing happens. Any bright user can further help me ? Much appreciated :) !

Cheers,

Tim

[Pierrick Rambaud]

I don't really know how to open Jupyter notebook from the SSH tunnel but I think it's worth mentioning an alternative development setup. 

• Create the venv in SEPAL and once activated you will be able to add every python lib you need (you have already done this one).
  
• Use the venv as a Jupyter kernel (https://docs.sepal.io/en/latest/cli/python.html#virtual-environment). Once done your venv will be available in the Jupyter kernel's list.
  
• Open JupyterLab in the application list and start coding directly in SEPAL (https://docs.sepal.io/en/latest/modules/index.html#start-applications)
  

If you're not familiar with JupyterLab and prefer the good old Jupyter Notebook, it's available as well and the venv will also appear in the kernel list.