this post was submitted on 12 Jul 2025
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Incoherent rant.

I've, once again, noticed Amazon and Anthropic absolutely hammering my Lemmy instance to the point of the lemmy-ui container crashing. Multiple IPs all over the US.

So I've decided to do some restructuring of how I run things. Ditched Fedora on my VPS in favour of Alpine, just to start with a clean slate. And started looking into different options on how to combat things better.

Behold, Anubis.

"Weighs the soul of incoming HTTP requests to stop AI crawlers"

From how I understand it, it works like a reverse proxy per each service. It took me a while to actually understand how it's supposed to integrate, but once I figured it out all bot activity instantly stopped. Not a single one got through yet.

My setup is basically just a home server -> tailscale tunnel (not funnel) -> VPS -> caddy reverse proxy, now with anubis integrated.

I'm not really sure why I'm posting this, but I hope at least one other goober trying to find a possible solution to these things finds this post.

Anubis Github, Anubis Website

Edit: Further elaboration for those who care, since I realized that might be important.

  • You don't have to use caddy/nginx/whatever as your reverse proxy in the first place, it's just how my setup works.
  • My Anubis sits between my local server and inside Caddy reverse proxy docker compose stack. So when a request is made, Caddy redirects to Anubis from its Caddyfile and Anubis decides whether or not to forward the request to the service or stop it in its tracks.
  • There are some minor issues, like it requiring javascript enabled, which might get a bit annoying for NoScript/Librewolf/whatever users, but considering most crawlbots don't do js at all, I believe this is a great tradeoff.
  • The most confusing part were the docs and understanding what it's supposed to do in the first place.
  • There's an option to apply your own rules via json/yaml, but I haven't figured out how to do that properly in docker yet. As in, there's a main configuration file you can override, but there's apparently also a way to add additional bots to block in separate files in a subdirectory. I'm sure I'll figure that out eventually.

Edit 2 for those who care: Well crap, turns out lemmy-ui crashing wasn't due to crawlbots, but something else entirely.
I've just spent maybe 14 hours troubleshooting this thing, since after a couple of minutes of running, lemmy-ui container healthcheck would show "unhealthy" and my instance couldn't be accessed from anywhere (lemmy-ui, photon, jerboa, probably the api as well).
After some digging, I've disabled anubis to check if that had anything to do with it, it didn't. But, I've also noticed my host ulimit -n was set to like 1000.... (I've been on the same install for years and swear an update must have changed it)
After changing ulimit -n (nofile) and shm_size to 2G in docker compose, it hasn't crashed yet. fingerscrossed
Boss, I'm tired and I want to get off Mr. Bones' wild ride.
I'm very sorry for not being able to reply to you all, but it's been hectic.

Cheers and I really hope someone finds this as useful as I did.

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[–] [email protected] 29 points 21 hours ago* (last edited 21 hours ago) (1 children)

That's guilt by association. Their viewpoint is awful.

I also wished there was no security at the gate of concerts, but I happily accept it if that means actual security (if done reasonably of course). And quite frankly, cute anime girl doing some math is so, so much better than those god damn freaking captchas. Or the service literally dying due to AI DDoS.

Edit: Forgot to mention, proof of work wasn't invented by or for crypto currency or blockchain. The concept exists since the 90's (as an idea for Email Spam prevention), making their argument completely nonsensical.

[–] [email protected] 3 points 19 hours ago

Ah, hashcash. Wish that had taken off, it was a good idea ...