Not able to render jupyter lab/notebooks in browser although the kernel is starting alright.

[binarycache]

• VS Code Version: 1.64.2
• OS Version: 18.04.6 LTS

Steps to Reproduce:

1. Running the docker image from inside slurm accessed via ssh.
2. docker run -it --init -p 3000:3000 -v "$(pwd):/home/workspace:cached" gitpod/openvscode-server
3. Afte installing python kernel is getting selected.
4. Can't render ipynb files (Tried on different versions of python, even with conda environment)

Jupyter Log Output:
Info 15:40:06: Find preferred kernel for untitled:Untitled-1.ipynb?jupyter-notebook with metadata {"orig_nbformat":4,"language_info":{"name":"python"}} & preferred interpreter /usr/bin/python3
Info 15:40:06: findKernel found Python 3.6.9 64-bit
Info 15:40:06: PreferredConnection: .jvsc74a57bd031f2aee4e71d21fbe5cf8b01ff0e069b9275f58929596ceb00d14d90e3e16cd6./usr/bin/python3./usr/bin/python3.-m#ipykernel_launcher found for NotebookDocument: untitled:Untitled-1.ipynb?jupyter-notebook
Info 15:40:06: TargetController found ID: .jvsc74a57bd031f2aee4e71d21fbe5cf8b01ff0e069b9275f58929596ceb00d14d90e3e16cd6./usr/bin/python3./usr/bin/python3.-m#ipykernel_launcher for document untitled:Untitled-1.ipynb?jupyter-notebook
Info 15:40:06: Setting controller affinity for untitled:Untitled-1.ipynb?jupyter-notebook .jvsc74a57bd031f2aee4e71d21fbe5cf8b01ff0e069b9275f58929596ceb00d14d90e3e16cd6./usr/bin/python3./usr/bin/python3.-m#ipykernel_launcher
Info 15:40:06: Creating controller for jupyter-notebook with interpreter /usr/bin/python3

Regards,
Anmol

[nooobcoder]

That's surely a websocket and HTTPs issue, you need to setup a NGINX/Apache2 reverse proxy with SSL to load webviews in your browser. #96 This comment is very hot to solve your solution, although I could not find it helpful, as this does not explain from basics. And I wanted to setup a reverse proxy using docker.
If webviews are the problem, then this is the only solution for now. The jupyter extension in vscode uses webviews to render a notebook. @binarycache

[nooobcoder]

You can also hop into the Chrome dev tools and check for webviews not being loaded.
Thanks

[augustoicaro]

I had the same problem. The simple direct solution is to make a ssh with tunnel -L to slrum node machine to the port that openvscode-server was started (usually 3000), something like: ssh -L 3000:slrum_node:3000 user@slrum_node. And then, in your browser access as localhost (localhost:3000).

When running applications in localhost no HTTPS is required to activate the web workers and the notebook will render as expected :)

This was a problem for me when I was trying to find an IDE solution to my environment. After dropping openvscode-server solution because I was not able to render the notebooks, some hours later and other failed strategies I found somewhere recommended to use caddy server. Then searching more I found that you can run web workers in localhost without HTTPS.

[nooobcoder]

@augustoicaro Thanks it worked, i had no idea that SSH tunnels, fixes HTTPs issues.
This is not a permafix, but still would get my job easily done, thank you so much @augustoicaro

[nooobcoder]

Yes @augustoicaro all works now, I have hosted it as a docker container and accessing remotely.
Thanks for your solution @augustoicaro, worked out like a charm!
Any mods reading this PIN his solution too or upvote as much possible.

[augustoicaro]

@nooobcoder I said the same thing that isn't a permafix, but create a https server was never prioritized since that tunnel solution is working well...

[binarycache]

@augustoicaro Worked liked a charm! @nooobcoder
Note: You might need to do ssh -L 3000:ip_address_ssh_server:3000 user@ssh_server instead of using the name of the server for port tunneling.
P.S. I still got an error of webview permissions which was basically a problem with "brave's" shields, try turning off the shields, and allowing cookies and javacript. I switched to chrome though for quick testing.
P.P.S I am still getting an error saying couldn't start python client tools which might be an issue with language server but it's working fine.

Thanks again!

[nooobcoder]

@binarycache that was very predictable. You can either use the FQDN or the IP address of the server whose port you want to forwarded to your local host.
You can read more about SSH port forwarding on: linuxize
Good day. 🌻

[nooobcoder]

@binarycache

P.P.S I am still getting an error saying couldn't start python client tools which might be an issue with language server but it's working fine.

Please provide further logs to track this down

[binarycache]

@nooobcoder I am not sure how to get the logs from it but the issue is and its solution is mentioned here microsoft/vscode-python#2877

[nooobcoder]

@jeanp413 can i have a easy guide with Docker compose to have a reverse proxy with websockets for openvscode server. I want a least brainf**k method of rev proxy using docker.

Also that would work with self signed certs without a domain name.
I just want https without much jargon.

[jeanp413]

@nooobcoder cannot promise anything but I agree it would be really helpful to have a docker compose config in the docs

[augustoicaro]

@augustoicaro Worked liked a charm! @nooobcoder Note: You might need to do ssh -L 3000:ip_address_ssh_server:3000 user@ssh_server instead of using the name of the server for port tunneling. P.S. I still got an error of webview permissions which was basically a problem with "brave's" shields, try turning off the shields, and allowing cookies and javacript. I switched to chrome though for quick testing. P.P.S I am still getting an error saying couldn't start python client tools which might be an issue with language server but it's working fine.

Thanks again!

@binarycache About python language service, it will not work because it is not installed with Microsoft python extension, due to proprietary restrictions as remote extensions. So I use Jedi as a language service in my projects.

Though in my testing it seems notebooks are not working at least when using https behind a reverse proxy thinking in latest stable version 1.64.2, notebooks work fine in 1.63.2, will investigate more.

@jeanp413, I'm using version 1.64.2 and it is working well with the ssh tunnel and accessing via localhost. The only problem I got in migration to 1.63.2 to 1.64.2 was the new way to start the server and now I need to use --host machine_name to access the server through the network.

[ayan-iiitd]

I am using 1.66.1 and I am unable to view notebooks. The command I used was ./openvscode-server-v1.66.1-linux-x64/bin/openvscode-server --host 192.168.3.63 --port 8585 and then ssh -L 8585:192.168.3.63:8585 [email protected]
I tried this with and without the host flag.
Without the host flag, the browsers (Brave, Firefox) couldn't connect to it with this error in the terminal with the ssh... command - channel 3: open failed: connect failed: Connection refused
This is what's coming in the output tab of log(window) when I am using the host flag and trying to open an ipynb file -

[2022-04-10 11:00:16.414] [window] [info] Ignoring configured affinity for 'pub.name' because the extension is unknown or cannot execute.
[2022-04-10 11:00:17.288] [window] [error] Can't compute sha-256: Error: Can't compute sha-256
    at t (http://192.168.3.63:8585/static/out/vs/workbench/workbench.web.main.js:797:37794)
    at new F (http://192.168.3.63:8585/static/out/vs/workbench/workbench.web.main.js:1350:9435)
    at v._createInstance (http://192.168.3.63:8585/static/out/vs/workbench/workbench.web.main.js:607:1332)
    at v.createInstance (http://192.168.3.63:8585/static/out/vs/workbench/workbench.web.main.js:607:773)
    at I.createWebviewElement (http://192.168.3.63:8585/static/out/vs/workbench/workbench.web.main.js:1350:21856)
    at B._createInset (http://192.168.3.63:8585/static/out/vs/workbench/workbench.web.main.js:1953:7308)
    at B._initialize (http://192.168.3.63:8585/static/out/vs/workbench/workbench.web.main.js:1953:413)
    at http://192.168.3.63:8585/static/out/vs/workbench/workbench.web.main.js:1949:53
[2022-04-10 11:00:18.073] [window] [error] [Extension Host] (node:2304093) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(Use `node --trace-deprecation ...` to show where the warning was created)

[ayan-iiitd]

@augustoicaro Sadly, I cannot use docker. I need access to a lot of files stored locally through code, which I also access outside my code.
And if the docker keeps running, the only way I can get access to that directory is through root which I do not have privileges of.

@jeanp413

Can you share this new errors you get?

[2022-04-11 14:34:09.900] [exthost] [info] Extension host with pid 2333525 started
[2022-04-11 14:34:09.908] [exthost] [info] Lock '/home/saifk/.openvscode-server/data/User/workspaceStorage/-58ad5f89/vscode.lock': Lock acquired.
[2022-04-11 14:34:10.167] [exthost] [info] ExtensionService#_doActivateExtension vscode.git-base, startup: true, activationEvent: '*', root cause: vscode.git
[2022-04-11 14:34:10.173] [exthost] [info] ExtensionService#_doActivateExtension vscode.debug-auto-launch, startup: true, activationEvent: '*'
[2022-04-11 14:34:10.196] [exthost] [info] ExtensionService#_doActivateExtension vscode.git, startup: true, activationEvent: '*'
[2022-04-11 14:34:10.262] [exthost] [info] ExtensionService#_doActivateExtension vscode.github, startup: true, activationEvent: '*'
[2022-04-11 14:34:10.338] [exthost] [info] ExtensionService#_doActivateExtension vscode.merge-conflict, startup: false, activationEvent: 'onStartupFinished'
[2022-04-11 14:34:10.346] [exthost] [info] Eager extensions activated
[2022-04-11 14:34:35.373] [exthost] [info] ExtensionService#_doActivateExtension vscode.ipynb, startup: false, activationEvent: 'onNotebook:jupyter-notebook}'
[2022-04-11 14:34:35.397] [exthost] [error] Activating extension vscode.ipynb failed due to an error:
[2022-04-11 14:34:35.397] [exthost] [error] TypeError: o.notebooks.onDidChangeNotebookCells is not a function
	at e.ensureAllNewCellsHaveCellIds (/home/saifk/.openvscode-server/extensions/vscode.ipynb-1.62.3/dist/ipynbMain.js:1:141168)
	at t.activate (/home/saifk/.openvscode-server/extensions/vscode.ipynb-1.62.3/dist/ipynbMain.js:1:153425)
	at Function._callActivateOptional (/home/saifk/openvscode-server-insiders-v1.67.0-linux-x64/out/vs/workbench/api/node/extensionHostProcess.js:90:16942)
	at Function._callActivate (/home/saifk/openvscode-server-insiders-v1.67.0-linux-x64/out/vs/workbench/api/node/extensionHostProcess.js:90:16606)
	at /home/saifk/openvscode-server-insiders-v1.67.0-linux-x64/out/vs/workbench/api/node/extensionHostProcess.js:90:14430
	at async C._activate (/home/saifk/openvscode-server-insiders-v1.67.0-linux-x64/out/vs/workbench/api/node/extensionHostProcess.js:85:8180)
	at async C._waitForDepsThenActivate (/home/saifk/openvscode-server-insiders-v1.67.0-linux-x64/out/vs/workbench/api/node/extensionHostProcess.js:85:8122)
	at async C._initialize (/home/saifk/openvscode-server-insiders-v1.67.0-linux-x64/out/vs/workbench/api/node/extensionHostProcess.js:85:7486)
[2022-04-11 14:34:52.534] [exthost] [info] ExtensionService#_doActivateExtension ms-python.python, startup: false, activationEvent: 'onLanguage:python'
[2022-04-11 14:34:52.810] [exthost] [info] ExtensionService#_doActivateExtension ms-toolsai.jupyter, startup: false, activationEvent: 'onLanguage:python'

[jeanp413]

@ayan-iiitd did you delete /home/saifk/.openvscode-server folder? I still see vscode.ipynb-1.62.3 in extensions folder, that should never happen, only the extensions you installed manually should be there i.e. jupyter (ms-toolsai.jupyter-x.x.x), jupiter keymap (ms-toolsai.jupyter-keymap-x.x.x), jupyter notebook renderer (ms-toolsai.jupyter-renderers-x.x.x) and python (ms-python.python-x.x.x) (from your screenshot above)
Try deleting it again and check if vscode.ipynb-1.62.3 is recreated (it should not)

[ayan-iiitd]

@jeanp413 It got recreated when I reinstalled the extensions.

[jeanp413]

@ayan-iiitd I just did some tests and it seems a bug in 1.66.1, will investigate, 1.65.2 should work just fine, could try it again, remove /home/saifk/.openvscode-server before launching openvscode-server 1.65.2, you should only see the 4 extensions installed in extensions folder

[ayan-iiitd]

OK, finally got it to work. I tried a completely new private window, with all extensions disabled. Deleted the existing folder. Reinstalled the Python extension(s). Then I tried opening notebooks, changing kernels and running a line of code, closing the window and starting a new fresh private window then going to the link, then I got the message as if I am opening VSCode for the first time, but all extensions worked, and so did the code. Thanks a lot. I will be looking forward to the updates and also, grateful to be able to find a bug.