Traefik using subfolder instead of subdomain

[ravenblight]

Hi
I'm newbie in all networking cases, but I've managed to setup my homelab with scale traefik as my main reverse proxy and it is bind with ks8 gateway pointing to my AdGuard Home dns. All supported by propper certs, and public domain (where needed, not all aps are exposed). This setup works perfect, also with External Services from truecharts, and my question is about possibility of setting up external service (or ingress) to point subfolder to diffirent port?

For example I have external service homeassistant on domain

Code:

ha.mydomain.com -> 192.168.1.50:8123 

and this is working but I have some problems to correctly access apps on homeassistant. I've researched possiblity to set something like:

Code:

ha.mydomain.com/app -> 192.168.1.50:someport

to point to diffirent port but in same ip range. Is this possible, I found difficult to find usefull answer for this.

 

[sretalla]

Use the TrueCharts app called External Service, then set it like this:

You'll need to add the path to have one there to work with...

 

[truecharts]

Use the TrueCharts app called External Service, then set it like this:

You'll need to add the path to have one there to work with...

View attachment 55033

One would, most likely, also need specific traefik middleware, otherwise it would only do:
ha.mydomain.com/app -> 192.168.1.50:someport/app

 

[sretalla]

One would, most likely, also need specific traefik middleware

Very good point, so on the Traefik app:

Under Middewares:

Name it and then set the values a bit like the ones in the example here (kubernetes tab):

RedirectRegex | Traefik | v2.0

Traefik Documentation

doc.traefik.io

 

[Migsi]

Might be a good point to hint to my thread where I was facing a similar issue (which looks more lika bug) regarding prefix/redirectRegex: https://www.truenas.com/community/threads/traefik-redirect-issues.100774/

Apparently the redirect does not work properly, but will append the port to the path you define (for whatever reason). If you get this to work, I'd be happy to hear what I missed.

 

[ravenblight]

Thanks for very fast reply, I've tried to setup regex redirect middleware, and plain redirect was working
sort of..

Code:

 https://ha.mydomain/app => https://ip:9541 

To plain ip worked but i've lost domain name in url it just redirected to ip address.

Code:

 https://($1)/app =>  https://x.x.x.x:9541 

I've tried today with truecharts app emu js which have two web interfaces
config on : 10130 (traefik catches it first in ingress, and I don't want to expose this service)
actual app on 10124 (this should be exposed)
I tried to first configure subfolder for app so I've added

Code:

^(.*)/app  => $1:10124

Regex101 replaces this nice, and without middleware emu.mydomain.com:10124 works fine
But when I've enabled middleware on emu app, it redirected me to right address but with ssl error
ERR_SSL_PROTOCOL_ERROR
Is there any way to hide port in url and to maintain emu.mydomain.com/app, and redirection under the hood?

 

[ravenblight]

I've tried to read more about traefik, and I think that what I tried to archive is rule on router to actualy rout traffic from main domain to paths on specific services, something like described in this article:
https://iceburn.medium.com/reverse-proxy-in-traefik-with-subdirectories-eef4261939e
But I don't know if modyfing router labels is possible in truecharts app.

 

[sretalla]

It's probably worth mentioning that you don't always need to do the redirect if the app already supports re-writing the path...

Most of the common apps do allow for the path to be set (the setting might be called something like URL base or you may need to search around for it a bit in the general or UI settings.

Where you can get the app to know that it's in a subfolder, the first path setting should be all that's needed in Traefik

 

[sretalla]

I don't know if modyfing router labels is possible in truecharts app.

If it is, I can't see it.

 

[ravenblight]

It's probably worth mentioning that you don't always need to do the redirect if the app already supports re-writing the path...

Most of the common apps do allow for the path to be set (the setting might be called something like URL base or you may need to search around for it a bit in the general or UI settings.

Where you can get the app to know that it's in a subfolder, the first path setting should be all that's needed in Traefik

I've played with emujs provided by truecharts, so I don't think that I can combine with rewriting, also that are 2 diffirent services under it with diffirent ports.

 

[truecharts]

to be clear here:
We generally advice subdomains for different services, as there is a whole host of issues you can get (and are getting)n into when doing path redirects. It hugely depends on a lot of circumstances if it works for your specific usecase and which cases/changes are required,

 

[ravenblight]

I've give up my attempts in doing this, I lack knowledge to dig inside of how this works, and i think that homeassistant ingress also blocks this.

 

[truecharts]

i think that homeassistant ingress also blocks this.

That's not likely.
But you've not given enough information to comment.

Please also be aware that most of our staff is not very active on these forums, as we've our own support resources.

 

[ravenblight]

That's not likely.
But you've not given enough information to comment.

Please also be aware that most of our staff is not very active on these forums, as we've our own support resources.

Yes, I was trying to submit discord support ticket, but it was closed with enigmatic anwser that this is my problem. Before I had chance to talk with somebody. Im not familiar with discord setup, for me it is chaotic and not very user friendly. So I gone here, thinking that maybe somebody had same idea like me. I can try again with discord.

 

[truecharts]

Yes, I was trying to submit discord support ticket, but it was closed with enigmatic anwser that this is my problem. Before I had chance to talk with somebody. Im not familiar with discord setup, for me it is chaotic and not very user friendly. So I gone here, thinking that maybe somebody had same idea like me. I can try again with discord.

That's odd, because we do not have any support ticket with "subdomain" it looks like.
Most likely your ticket got closed because you didn't include the information that is listed as "required", just like we stated here... even when filing a support ticket we have a minium amount of information our staff requires to respond to any request for help.

 

[ravenblight]

That's odd, because we do not have any support ticket with "subdomain" it looks like.
Most likely your ticket got closed because you didn't include the information that is listed as "required", just like we stated here... even when filing a support ticket we have a minium amount of information our staff requires to respond to any request for help.

Yes because I've asked about subdirectory, I think, I don't know how to display my discord history. As I said, I've give up on subdirectory way, this is for now much bigger than I though. I'll try to submit another ticket on discord, about multi service app like emujs with some more details.