Access a Caddy server by IP

Question

I have a website with docker and I use caddy for production. This is my configuration on my Caddyfile

mydomain.com {
    proxy / django:5000 {
        header_upstream Host {host}
        header_upstream X-Real-IP {remote}
        header_upstream X-Forwarded-Proto {scheme}
        header_upstream X-CSRFToken {~csrftoken}
    }
    log stdout
    errors stdout
    gzip
}

This configuration works well when I use mydomain.com, but when I try to access the server by IP it returns me the following error:

404 Site 156.130.11.8 is not served on this interface

I've tried using *, 156.130.11.8, and :80

* {
    proxy / django:5000...
    ...

156.130.11.8 {
    proxy / django:5000...
    ...

None of this is working either, does anyone of you know how can I solve this?

EDIT: The code is here: https://github.com/maguayo/django-starter-api Caddy configuration is under compose/production/caddy/ also the configuration I am running is on "production.yml"

Incompetence

Can you provide sample git repo to see the problem in action? – Zellers

@TarunLalwani yes. Here you have it: github.com/maguayo/django-starter-api Caddy is under compose/production/caddy and production.yml on the root – Incompetence

I ran docker-compose -f production.yml up and it is given some errors? – Zellers

No. There should not be errors using docker-compose -f production.yml up, but trying to access the website through a browser it returns 404 Site 156.130.11.8 is not served on this interface – Incompetence

Have you defined the DOMAIN_NAME environment variable in the .env file. It should be *:80 then only your setup will work – Zellers

@TarunLalwani I know, that should work but it doesn't. I can't access the website at all, with the IP or the domain. – Incompetence

Let us continue this discussion in chat. – Zellers

My answer probably was way too broad, was it? – Saltpeter

Answer 1

According to these tutorials:

https://www.digitalocean.com/community/tutorials/how-to-host-a-website-with-caddy-on-ubuntu-16-04

https://www.booleanworld.com/host-website-caddy-web-server-linux/

https://caddyserver.com/docs/caddyfile-tutorial

your Caddy server should serve the website on your ip using port 80 using one of the follwing configurations:

* {
    proxy / django:5000...
    ...

156.130.11.8 {
    proxy / django:5000...
    ...

:80 {
    proxy / django:5000...
    ...

http:// {
    proxy / django:5000...
    ...

Maybe http://156.130.11.8 { proxy / django:5000 ... } will do the job. Also try to use localhost instead of the ip address like this:

localhost {
    proxy / django:5000...
    ...
}

http://localhost {
    proxy / django:5000...
    ...
}

Good luck!

Mechling

I already tried that and I am getting the same error: 404 Site 156.130.11.8 is not served on this interface – Incompetence

is the 404 coming from caddy or django? Have a look at django's logs. – Lapidate

Answer 2

Is it possible that your Django settings.py only has the mydomain.com as allowed host and not the IP? That way the server should return something like "is not served on this interface" and it shouldn't when the domain name is used.

I experienced a similar problem some time ago, not with Caddy but Apache also on Ubuntu. It would also explain why changing your Caddy config doesn't solve the problem, as it is correct.

settings.py should have a line like

ALLOWED_HOSTS = [IP, 'mydomain.com']

More on this parameter can be found in the documentation.

Saltpeter

My settings have ALLOWED_HOSTS=["*"] :( – Incompetence

Ah, my bad. And you didn't find a solution in the meantime? – Saltpeter

And in your docker config your have the settings to port forward the ports? – Saltpeter

I am not sure. this is my config: github.com/maguayo/django-starter-api/blob/master/… Probably has to do with docker.. – Incompetence

When you tried to access the IP address, did you specify the port? If you want you can take a deeper look on docker networking in the documentation, but as far as I can tell, yours looks pretty solid, as long as someone specifies the port. – Saltpeter