Okay, let me start by saying that I really do love Home Assistant. I believe that it is a fantastic piece of software, with very dedicated developers that are far more talented than I. Although, that being said, I strongly disagree with a number of their design choices.
My most recent problem has been trying to put Home Assistant behind a reverse proxy with a subpath. The Home Assistant developers flat out refuse any contribution that adds support for this. Supposedly, the frontend has hard-coded paths for some views, to me this doesn't sound like a good practice to begin with -- that being said, I mostly program in Go these days (so I'm unsure if this is something that is pretty common in some frameworks or languages). The official solution is to use a subdomain, which I can't do -- I'm trying to route all services through a Tailscale Funnel (which only provides a single domain; I doubt that Tailscale Funnels where ever designed for this purpose, but I'm trying to completely remove Cloudflare Tunnels for my selfhosted services).
The other major problem I've ran into, is that HAOS assumes that you would have no need to run any other Docker services other than those that are add-ons or Home Assistant itself. Which, I'm sorry (not really), Home Assistant add-ons are an absolute pain to deal with! Sure, when they work, they're supper simple, but having to write an add-on for whenever I just want to spin up a single Docker container is not going to work for me.
Now, some smaller issues I've had:
- There's no way to change the default authentication providers. I host for my (non-techie) family, they're not going to know what the difference between local authentication and command-line authentication is, just that one works and the other doesn't.
- Everything that is "advanced" requires a workaround. Like mounting external hard drives and sharing it with containers in HAOS requires you to setup the Samba add-on, add the network drive, and then you can use it within containers.
Again, I still really love Home Assistant, it's just getting to a point where things are starting to feel hacky or not thought out all the way. I've considered other self-hosted automation software, but there really isn't any other good alternative (unless you want to be using HomeKit). Also, I'm a programmer first, and far away from being a self-hosting pro (so let me know if I've missed any crucial details that completely flip my perspective on it's head).
If you got to the end of this thanks for reading my rant, you're awesome.
Have you considered not using the Home Assistant OS? You don’t need to run it to use Home Assistant. You can instead set your host up with some other OS, like Debian, and then run Home Assistant in a docker container (or containers, plural) and run any other containers you want.
I’m not doing this myself so can’t speak to its limitations, but from what I’ve heard, if you’re familiar with Docker then it’s pretty straightforward.
A lot of apps use hard coded paths, so using a subdomain per app makes it much easier to use them all. Traefik has middleware, including stripPrefix, which allow you to strip a path prefix before forwarding the path to the app, though - have you tried that approach?
Strip prefix won't work if the frontend expects to find paths at absolute locations. You would need to patch the html, css and js on the fly, which is somewhere between ugly and (almost) impossible.
I would also suggest to simply use custom (sub) domains. Especially in your intranet you can have whatever domains you want.
This is what I've seen would be the only "feasible" way of getting HA to work behind a subpath, in my opinion this only works for very small application though (not something as complex as Home Assistant).