docker: connecting to localhost outside the container (intermediate) anthony explains #555

today we talk about docker loopback -- how to navigate docker networking to allow connections to the host machine localhost instead of the in-container localhost!

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[mrswats]

This is very interesting! This networking quirks is why I almost always use compose to run containers locally

[fabiomanzo]

docker network inspect bridge --format='{{(index .IPAM.Config 0).Gateway}}'

[ltn]

Oh wow, I've been wanting to do this for a while and didn't think it was possible (at least, easily). Thanks!

[hrvojematosevic]

Did not know this about docker. Always glad to learn new things.

[theobotchway]

I was actually researching on a network concept, and somehow this pops up 😂
Still answered my question tho

[jcbrunhera]

You just save my day!! thks so much !!

[rafaelrosenberg]

thanks for sharing this knowledge. I also was other here that struggled with this topic for some time. Your video was very helpfull. New follower of your content here =)

Thanks for sharing this information, have you ever tried zenoh communication between host and docker containers? Like zenoh pub sub ?

[ghost_]

Cool, is it possible to add more of the docker internal addresses? I am currently planning a project where i have 3 containers that i need for each one of them to have an internal ip address that could communicate with local hosts..

[namanrawal]

Interestingly, I can't seem to replicate this on macOS. I still get a connection refused running these exact same commands. I wonder if local firewall rules are disrupting the connection? Hmm

[sgeisenh]

Are you still able to issue requests to localhost outside of docker even after you bind to the docker bridge network IP?

[nildesperandum]

Where do you open terminal? In docker? What about Windows users?? Thx

[samsal]

Hi, Thanks for your video its very informative. I was wondering if you can help me with an issue I'm facing. I have enabled dockerdesktop host networking and inside the docker-compose I have created the loopback using extra_hosts: <ip>=host-gateway. The image Im using is for Apache Nifi and in Nifi you can specify the HTTPS_HOST to bind the application to, however I keep getting the error : java.io.IOException: Failed to bind <- Cannot assign requested address. Why is that ? the host ip has been added to the /etc/hosts ! My goal is to access nifi from any machine on the network and for that I need to use the host IP. Is there a way to go around this error and still access the app from the host network? Thank

[clorzz]

I started trying to do the same in podman, and turns out host.containers.internal is just there by default.

[RajatNair]

hey can you help me out i want to access the camera from docker jupyte lab so how can i do it.

[antoniofernandodiasjunior]

is there a way to get the access to loopback in linux instead of windows or macos? i think host docker internal does not work...

[bcodetube]

Can you use "docker run --network host" instead of bridge?

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