Just out of curiosity: Was anyone able to attach to a debugger (e.g. debugpy) to a docker container running dagster? I don't know where to run debugpy - on dagit or on the pipeline docker container?

Yeah! There are a couple steps that have to be taken: • expose port 5678 from the container • call

debugpy.listen(('0.0.0.0', 5678))

in the appropriate op/function. Note that we’re using a tuple to specify the interface • call

debugpy.wait_for_client()

so you’re not rushing around • finally, call

debugpy.breakpoint()

wherever you’d like in the function Oh, and you’ll need to create a

launch.json

for python remote attach. In VSCode, click “Run and Debug” -> “Create a launch.json file” and follow the prompts ( python -> remote attach -> localhost -> 5678 )

Is it possible to add the pycharm debugger?

I don’t know, but probably 🙂

Ok thanks. I will give this a try. I was thinking that I could have a generic dockerfile/docker-compose config generally allows to attach a debugger. With you method I have to be careful to remove the debug code before using it in production.

Ah that requirement wasn’t in your original spec 😉 Yeah I’m not sure how to do it without explicitly adding what I specified above