tmpnb connection error: No 'Access-Control-Allow-Origin' header

[Timothy Hogan]

I set up tmpnb on Docker as instructed on Github

It can be accessed via the browser, on http://192.168.99.100:8000. This works as expected

I am trying to connect a "Python Fiddle" type frontend (OReily THEBE) to the tmpnb environment. 

I can connect thebe to "tmpnb.org" and to a kernel running on my local computer. Both work as expected.

When I change the URL to http://192.168.99.100:8000, the connection is not made.

When I check the Web Console I see the following error:

XMLHttpRequest cannot load http://192.168.99.100:8000/api/spawn/. No 'Access-Control-Allow-Origin' header is present on the requested resource.

I have tried starting the notebook, with including the following commands 

--NotebookApp.trust_xheaders=True

--NotebookApp.allow_origin=*

Yet this does not solve the problem.

If I don't use '--NotebookApp.allow_origin=*' on my local computer, when I start up the system, I get the same error. 

I do not see any errors in my docker containers

What additional steps do I need to take?

Thank you!

[Kyle Kelley]

Hey Timothy,

Both tmpnb _and_ the notebook in the docker container have to change the origin headers for use by Thebe.

For tmpnb, the option is titled --allow-origin (https://github.com/jupyter/tmpnb#options)

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Kyle Kelley (@rgbkrk; lambdaops.com)

[Timothy Hogan]

Thanks so much Kyle! Your solution worked!

[Dhanasekaran Anbalagan]

Hi Guys,

Currenly I am trying with tmpnb with (OReily THEBE), Currenly I am getting error starting notebook

XMLHttpRequest cannot load http://192.168.70.54:8000/user/MCkTzGFH4xN1?token=fc868fcdf38d1e03d00aeef57bf5f5c91333de3e61e65325/api/kernels. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:5555' is therefore not allowed access. The response had HTTP status code 405.

export TOKEN=$( head -c 30 /dev/urandom | xxd -p )

docker run --net=host -d -e CONFIGPROXY_AUTH_TOKEN=$TOKEN --name=proxy jupyter/configurable-http-proxy --default-target http://127.0.0.1:9999 

docker run -d \

    --net=host \

    --name=tmpnb \

    -e CONFIGPROXY_AUTH_TOKEN=$TOKEN \

    -v /var/run/docker.sock:/docker.sock \

    jupyter/tmpnb \

    python orchestrate.py --use_tokens=1 --image='jupyter/minimal-notebook'  --allow-origin='*' \

        --command='start-notebook.sh \

            "--NotebookApp.base_url={base_path} \

            --ip=0.0.0.0 \

            --port={port} \

            --NotebookApp.trust_xheaders=True" \

   --NotebookApp.allow_origin='*' \

   --NotebookApp.token='''

Web Console I see the following error:

==============================

Thebe is in tmpnb mode

main-built.js:28 cookie was wrong/outdated, call spawn as needed

main-built.js:28 Tmpnb server seems to be up

main-built.js:28 Thebe: start

main-built.js:28 show cell state: start for 0

main-built.js:28 call spawn

main-built.js:28 spawn handler called

main-built.js:28 tmpnb says we should use

main-built.js:28 http://192.168.70.54:8000/user/MCkTzGFH4xN1?token=fc868fcdf38d1e03d00aeef57bf5f5c91333de3e61e65325/

main-built.js:28 start_kernel with http://192.168.70.54:8000/user/MCkTzGFH4xN1?token=fc868fcdf38d1e03d00aeef57bf5f5c91333de3e61e65325/

jquery-2.1.4.min.js:4 POST http://192.168.70.54:8000/user/MCkTzGFH4xN1?token=fc868fcdf38d1e03d00aeef57bf5f5c91333de3e61e65325/api/kernels send @ jquery-2.1.4.min.js:4ajax @ jquery-2.1.4.min.js:4o.start @ main-built.js:20e.start_kernel @ main-built.js:28(anonymous function) @ main-built.js:28e.spawn_handler @ main-built.js:28(anonymous function) @ main-built.js:28(anonymous function) @ main-built.js:28

(index):1 XMLHttpRequest cannot load http://192.168.70.54:8000/user/MCkTzGFH4xN1?token=fc868fcdf38d1e03d00aeef57bf5f5c91333de3e61e65325/api/kernels. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:5555' is therefore not allowed access. The response had HTTP status code 405.

main-built.js:6 Object {readyState: 0, responseJSON: undefined, status: 0, statusText: "error"}

main-built.js:6 API request failed (0): error

main-built.js:28 Ajax Error!

main-built.js:28 Thebe: disconnected

Please guide me How to fix this.

[Dhanasekaran Anbalagan]

Hi Guys,

Finally we are able to run, After adding --NotebookApp.disable_check_xsrf=True

working commands:

export TOKEN=$( head -c 30 /dev/urandom | xxd -p )

docker run --net=host -d -e CONFIGPROXY_AUTH_TOKEN=$TOKEN jupyter/configurable-http-proxy --default-target http://127.0.0.1:9999

docker run --net=host -d -e CONFIGPROXY_AUTH_TOKEN=$TOKEN -v /var/run/docker.sock:/docker.sock jupyter/tmpnb python orchestrate.py --image="jupyter/r-notebook" --allow_origin="*" --command="jupyter notebook --no-browser --port {port} --ip=* --NotebookApp.allow_origin=* --NotebookApp.base_url={base_path} --NotebookApp.token='' --NotebookApp.disable_check_xsrf=True" --cull-timeout=300 --cull_period=60