How to debug Docker containers! (Python + VSCode)

[@datamike7457]

Nice video. I've been exploring docker containers and the extra abstraction makes debugging more awkward. This was super helpful!

[@DevOpsDirective]

Thanks Mike! Relevant to your area of expertise, containers can be a game-changer for eliminating dependency issues for data science work: - Have a legacy model that is still living in the past and requires Python 2.7? No problem! - Need different versions of TensorFlow various applications you are developing? Sure! - Calling out to some 3rd party tool that only runs in Linux? Great!

[@meigu01]

@@DevOpsDirective Hi i got Error: -m: missing , is this correct? ENTRYPOINT ["python","-m","debugpy", "listen", "0.0.0.:5678", "--wait-for-client","-m"]

[@TuomoKankaanpaa]

Wow the remote debugger and attaching it to vs code will really come in handy! And congrats on the 200 subs 🙌🎉

[@DevOpsDirective]

Thanks! -- Yes, it takes a bit of work to have the separate Dockerfile stage, but for debugging complex issues it is really the way to go!

[@akozy]

This is what I was looking for!!! It seemed so hard to find for some reason. Can't wait to see your channel grow. Keep it up!

[@DevOpsDirective]

Well, I'm glad you found your way to my little corner of KZbin! 😁 Welcome to the team! 👋

[@thebluechimera]

Great video! I've always found Docker quite intimidating, this was good to watch

[@DevOpsDirective]

Thanks @Maria! It is a bit of a steep learning curve, but once you get used to it, the added confidence that something in production will behave the same way as on your laptop is amazing!

[@thebluechimera]

@@DevOpsDirective I know right! Quite an awesome feeling

[@AZIARGROUS]

Thank you man! This is exactly the kind of concept I was playing with these days. Thank you for explaining how to expose that port from docker to local host.

[@DevOpsDirective]

You are welcome, Paolo!

[@kab9996]

Thanks for the best and the clearest tutorial on how to debug python into Docker with VSC !

[@DevOpsDirective]

Woot! Thanks @Ka -- your comment makes me smile :)

[@timaudsley6080]

Thanks, this is exactly what I required!

[@machinelearningid3931]

From traversy, thanks, your devops video are awesome.

[@DevOpsDirective]

Welcome aboard @Machine Learning ID! 👋👋👋 Happy to have you here!

[@ערןאוצפ]

Great video, thanks !

[@DevOpsDirective]

You're welcome! 🎉

[@SgtMajorJay]

Your videos are fire

[@DevOpsDirective]

Thanks @SomeDude! 🔥🔥🔥

[@Buckheadmaniac]

which directory of the github repo should I look for this video?

[@abrahammathewos9917]

Thank you! you are the best.

[@DevOpsDirective]

Thank you @Abraham! Comments like this make me want to keep putting out even better videos!

[@plashless3406]

This is really amazing. I'm having a use case would really appreciate for helping me out. :) I'm running services in Docker Containers i-e web, db, worker(celery). Is there any way so that I can add a breakpoint in the Pycharm(code) and it will start the debugger in the containers(specifically celery worker)?

[@ShikhaSingh04]

Can you suggest any other dependency for debugging else than debugpy?

[@SaifPasha-s7t]

I have my dockerfile made and Im using fastapi python but when I run my application via that play button of VSCODE I run into a error called PYTHON PATH IN YOUR DEBUG CONFIGURATION IS INVALID. please help me with that ..

[@danh_phuong9297]

That's great. I'm looking for debugging C in docker with VSCode. Please suggest any solution !!!

[@DevOpsDirective]

One options would be to have a multi-stage image with an extra Debugger stage in which you install any of your favorite debugging tools. This way you can keep your production image small but have an image to recreate any bugs in that has the necessary tools for debugging

[@edustreamimg]

good job buddy!

[@DevOpsDirective]

Thanks @Eduardo!

[@edustreamimg]

@@DevOpsDirective In 6:35 you are creating 3 images?

[@DevOpsDirective]

@@edustreamimg Yeah, here is more info on multi-stage builds docs.docker.com/develop/develop-images/multistage-build/ By using the --target option when building the Dockerfile I can tell Docker which of the stages I want it to build (docs.docker.com/develop/develop-images/multistage-build/#stop-at-a-specific-build-stage)

[@edustreamimg]

@@DevOpsDirective Is a good practice not to run debugger in same container? why?

[@DevOpsDirective]

@@edustreamimg There are a number of reasons you wouldn't want to have a debugger running inside your production container. The three that come to mind are: 1) Simplicity -- Each container should have a singular focus. By adding a debugger, you lose that. 2) Security -- It's best not to have additional surface area for potential attackers to try and exploit (you would need to open an additional port to access, etc...) 3) Performance -- having the debugger running is one more thing to take compute cycles away from your application KZbin comments are a bit clunky for technical discussions. I have a discord server if you want to continue the discussion with lots of other smart folks! discord.gg/CQYSqKvqqa

[@kid_kulafu_1727]

Who’s here because you saw this dude on brads channel? Thank you for this sir.

[@DevOpsDirective]

Hi @aRtoo _ -- Welcome! 😄

[@mariacristinaarezzi]

I'm happy to meet you

[@uncoding_with_raj]

Can we connect VSCODE debugger AUTOMATICALLY to docker container without hitting the play button in VSCODE ?

[@yuriwolf6234]

Dear Sid, do I have to rebuild the docker image every time I modify something in my .py file? thanks regards

[@yuriwolf6234]

just answering myself: I got to mount the :/app directory on the container to a path on my local machine where i copy my files docker run -v /path/on/local/machine :/app -p 5678:5678 image_id main_python_file

[@acavaelnick]

Great, thanks

[@DevOpsDirective]

You are welcome, @Joaquin!

[@nareshmp1]

Nice video. Is it possible to debug the code step by step? Especially when its web2py app?

[@DevOpsDirective]

Once you have attached the debugging session as shown in the video you should be able to step through to any breakpoints you set!

[@jansoriano7451]

Hi Sid, I've seen your video tutorial on Brads channel. I'm currently a shopify dev, and I want to become a devops engineer. I am hoping to get tips from you or your channel. Thanks!

[@DevOpsDirective]

Hi @Jan - Happy to have you here! Welcome to the team! 👋👋👋

[@jansoriano7451]

@@DevOpsDirective Thanks Sid!

[@jarorkwong8042]

Volumn up

[@DevOpsDirective]

Thanks, this was before I had figured out the whole audio recording/editing thing... 😅 Hopefully my newer videos have better, more consistent audio!