Can’t establish a connection to the server

[eudemocracystiftung]

Describe the bug
When ChangeDetection.io runs via Docker on my VPS, I cannot access it via a browser, with the usual Unable to connect Firefox can’t establish a connection to the server at <vps-ip>:5000.

Version
Exact version in the top right area: 0.50.39

How did you install?

Docker (cloned repo, then docker compose up -d)

To Reproduce

Steps to reproduce the behavior:

1. Ssh into VPS
2. Close github repo
3. Go to docker-compose.yml folder
4. Execute Docker compose up -d
5. Check with docker ps -a that the container is running well (it is)
6. In the browser, navigate to :5000
7. See error

Expected behavior
Navigating to the page would display ChangeDetection.io

Desktop (please complete the following information):

• OS: the VPS runs Ubuntu 24.04
• Browser: Firefox
• Version 140

Additional context

1. The VPS runs other webservers and those are accessible via <vps-ip>:<port>, so this does not seem to be an issue with the VPS itself; and
2. I did manage to set up ChangeDetection.io locally via Docker compose and could access it via http://localhost:5000/ in the same browser, so this does not seem to be an issue with the browser either.
3. Maybe we are missing something obvious?

[dgtlmoon]

Heya, thanks for this, working on it :)

[eudemocracystiftung]

Thanks a lot, I appreciate the help! Happy to provide any information that is useful.

[dgtlmoon]

You need to read the docker-compose.yml - by default it only listens on localhost, you need to adjust it to listen on the public interface

changedetection.io/docker-compose.yml

Line 89 in dfa85ab

- 127.0.0.1:5000:5000

[eudemocracystiftung]

That might be the obvious part we missed. But actually I did look at it and indeed saw the line I you quote. I even changed 5000 to 5050 since I was on a mac, but that does not apply to the VPS. At any rate, does this really need to be changed? Doesn't the vps automatically map this port on its localhost to the one publicly accessible? I guess the answer is no, though. So I should replace the localhost ip with the public facing one, is this it?

[dgtlmoon]

I cant help you with that, but i would suggest to google up docker compose port syntax, like i said, it by default only listens to localhost for security reasons

[eudemocracystiftung]

Seems like this indeed did the trick. Now it can be accessed both ways. But, of course, we will need to find a way to prevent connections by just anybody.